./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.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 473191b5f1326a38296af26dcd2c7f553c42833f82b512e9fb358484309bc769 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:14:54,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:14:54,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:14:54,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:14:54,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:14:54,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:14:54,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:14:54,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:14:54,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:14:54,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:14:54,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:14:54,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:14:54,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:14:54,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:14:54,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:14:54,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:14:54,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:14:54,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:14:54,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:14:54,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:14:54,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:14:54,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:14:54,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:14:54,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:14:54,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:14:54,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:14:54,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:14:54,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:14:54,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:14:54,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:14:54,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:14:54,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:14:54,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:14:54,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:14:54,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:14:54,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:14:54,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:14:54,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:14:54,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:14:54,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:14:54,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:14:54,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:14:54,411 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:14:54,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:14:54,411 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:14:54,411 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:14:54,412 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:14:54,412 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:14:54,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:14:54,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:14:54,412 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:14:54,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:14:54,412 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:14:54,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:14:54,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:14:54,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:14:54,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:14:54,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:14:54,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:14:54,413 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:14:54,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:14:54,413 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:14:54,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:14:54,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:14:54,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:14:54,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:14:54,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:14:54,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:14:54,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:14:54,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:14:54,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:14:54,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:14:54,414 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:14:54,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:14:54,415 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:14:54,415 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:14:54,415 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:14:54,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 473191b5f1326a38296af26dcd2c7f553c42833f82b512e9fb358484309bc769 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:14:54,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:14:54,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:14:54,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:14:54,680 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:14:54,681 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:14:54,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-08-30 23:14:55,677 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:14:55,879 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:14:55,879 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-08-30 23:14:55,887 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/026bcd28f/eeb15f0ca4d1418a81832f5030ffe3cf/FLAGc593a2fc8 [2023-08-30 23:14:55,896 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/026bcd28f/eeb15f0ca4d1418a81832f5030ffe3cf [2023-08-30 23:14:55,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:14:55,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:14:55,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:14:55,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:14:55,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:14:55,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:14:55" (1/1) ... [2023-08-30 23:14:55,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1a26ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:55, skipping insertion in model container [2023-08-30 23:14:55,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:14:55" (1/1) ... [2023-08-30 23:14:55,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:14:55,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:14:56,064 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-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2023-08-30 23:14:56,227 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:14:56,238 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:14:56,247 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-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2023-08-30 23:14:56,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:14:56,339 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:14:56,340 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:14:56,344 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:14:56,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:56 WrapperNode [2023-08-30 23:14:56,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:14:56,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:14:56,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:14:56,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:14:56,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:56" (1/1) ... [2023-08-30 23:14:56,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:56" (1/1) ... [2023-08-30 23:14:56,404 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 167 [2023-08-30 23:14:56,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:14:56,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:14:56,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:14:56,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:14:56,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:56" (1/1) ... [2023-08-30 23:14:56,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:56" (1/1) ... [2023-08-30 23:14:56,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:56" (1/1) ... [2023-08-30 23:14:56,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:56" (1/1) ... [2023-08-30 23:14:56,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:56" (1/1) ... [2023-08-30 23:14:56,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:56" (1/1) ... [2023-08-30 23:14:56,439 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:56" (1/1) ... [2023-08-30 23:14:56,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:56" (1/1) ... [2023-08-30 23:14:56,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:14:56,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:14:56,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:14:56,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:14:56,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:56" (1/1) ... [2023-08-30 23:14:56,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:14:56,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:14:56,475 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 23:14:56,513 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 23:14:56,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:14:56,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 23:14:56,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:14:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:14:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:14:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 23:14:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 23:14:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 23:14:56,531 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 23:14:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 23:14:56,531 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 23:14:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-30 23:14:56,531 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-30 23:14:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:14:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 23:14:56,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:14:56,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:14:56,533 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 23:14:56,696 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:14:56,697 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:14:56,933 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:14:57,028 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:14:57,029 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 23:14:57,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:14:57 BoogieIcfgContainer [2023-08-30 23:14:57,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:14:57,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:14:57,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:14:57,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:14:57,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:14:55" (1/3) ... [2023-08-30 23:14:57,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:14:57, skipping insertion in model container [2023-08-30 23:14:57,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:56" (2/3) ... [2023-08-30 23:14:57,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:14:57, skipping insertion in model container [2023-08-30 23:14:57,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:14:57" (3/3) ... [2023-08-30 23:14:57,035 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-08-30 23:14:57,040 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:14:57,046 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:14:57,046 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 23:14:57,046 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:14:57,090 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 23:14:57,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 129 transitions, 278 flow [2023-08-30 23:14:57,157 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2023-08-30 23:14:57,157 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:14:57,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 2/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2023-08-30 23:14:57,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 129 transitions, 278 flow [2023-08-30 23:14:57,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 125 transitions, 262 flow [2023-08-30 23:14:57,167 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:14:57,180 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 125 transitions, 262 flow [2023-08-30 23:14:57,184 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 125 transitions, 262 flow [2023-08-30 23:14:57,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 125 transitions, 262 flow [2023-08-30 23:14:57,204 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2023-08-30 23:14:57,205 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:14:57,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 2/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2023-08-30 23:14:57,208 INFO L119 LiptonReduction]: Number of co-enabled transitions 2936 [2023-08-30 23:15:00,137 INFO L134 LiptonReduction]: Checked pairs total: 6820 [2023-08-30 23:15:00,138 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-30 23:15:00,147 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:15:00,151 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;@7c8364a3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:15:00,151 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 23:15:00,155 INFO L130 PetriNetUnfolder]: 0/17 cut-off events. [2023-08-30 23:15:00,155 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:15:00,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:00,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:00,156 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:00,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:00,160 INFO L85 PathProgramCache]: Analyzing trace with hash -273626498, now seen corresponding path program 1 times [2023-08-30 23:15:00,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:00,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166448820] [2023-08-30 23:15:00,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:00,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:15:00,526 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 23:15:00,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:15:00,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166448820] [2023-08-30 23:15:00,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166448820] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:15:00,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:15:00,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:15:00,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182040324] [2023-08-30 23:15:00,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:15:00,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:15:00,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:15:00,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:15:00,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:15:00,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 235 [2023-08-30 23:15:00,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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 23:15:00,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:15:00,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 235 [2023-08-30 23:15:00,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:15:00,996 INFO L130 PetriNetUnfolder]: 3113/4519 cut-off events. [2023-08-30 23:15:00,997 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 23:15:01,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8913 conditions, 4519 events. 3113/4519 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 24198 event pairs, 593 based on Foata normal form. 0/4326 useless extension candidates. Maximal degree in co-relation 8901. Up to 3385 conditions per place. [2023-08-30 23:15:01,020 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 32 selfloop transitions, 2 changer transitions 2/40 dead transitions. [2023-08-30 23:15:01,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 40 transitions, 164 flow [2023-08-30 23:15:01,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:15:01,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:15:01,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2023-08-30 23:15:01,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2023-08-30 23:15:01,035 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2023-08-30 23:15:01,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2023-08-30 23:15:01,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:15:01,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2023-08-30 23:15:01,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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 23:15:01,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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 23:15:01,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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 23:15:01,049 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 72 flow. Second operand 3 states and 384 transitions. [2023-08-30 23:15:01,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 40 transitions, 164 flow [2023-08-30 23:15:01,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 160 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 23:15:01,054 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 66 flow [2023-08-30 23:15:01,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-08-30 23:15:01,060 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-08-30 23:15:01,061 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 66 flow [2023-08-30 23:15:01,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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 23:15:01,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:01,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:01,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:15:01,064 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:01,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:01,065 INFO L85 PathProgramCache]: Analyzing trace with hash 243126665, now seen corresponding path program 1 times [2023-08-30 23:15:01,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:01,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457334036] [2023-08-30 23:15:01,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:01,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:15:01,649 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 23:15:01,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:15:01,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457334036] [2023-08-30 23:15:01,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457334036] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:15:01,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:15:01,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:15:01,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652678846] [2023-08-30 23:15:01,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:15:01,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:15:01,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:15:01,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:15:01,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:15:01,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2023-08-30 23:15:01,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 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 23:15:01,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:15:01,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2023-08-30 23:15:01,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:15:02,758 INFO L130 PetriNetUnfolder]: 8855/12240 cut-off events. [2023-08-30 23:15:02,759 INFO L131 PetriNetUnfolder]: For 208/208 co-relation queries the response was YES. [2023-08-30 23:15:02,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24894 conditions, 12240 events. 8855/12240 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 62448 event pairs, 1655 based on Foata normal form. 576/12800 useless extension candidates. Maximal degree in co-relation 24884. Up to 5729 conditions per place. [2023-08-30 23:15:02,809 INFO L137 encePairwiseOnDemand]: 223/235 looper letters, 42 selfloop transitions, 10 changer transitions 37/90 dead transitions. [2023-08-30 23:15:02,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 90 transitions, 372 flow [2023-08-30 23:15:02,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:15:02,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:15:02,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 799 transitions. [2023-08-30 23:15:02,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2023-08-30 23:15:02,811 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 799 transitions. [2023-08-30 23:15:02,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 799 transitions. [2023-08-30 23:15:02,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:15:02,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 799 transitions. [2023-08-30 23:15:02,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.14285714285714) internal successors, (799), 7 states have internal predecessors, (799), 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 23:15:02,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 23:15:02,817 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 23:15:02,817 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 66 flow. Second operand 7 states and 799 transitions. [2023-08-30 23:15:02,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 90 transitions, 372 flow [2023-08-30 23:15:02,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 90 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:15:02,822 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 158 flow [2023-08-30 23:15:02,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=158, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2023-08-30 23:15:02,823 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-30 23:15:02,823 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 158 flow [2023-08-30 23:15:02,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 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 23:15:02,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:02,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:02,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:15:02,824 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:02,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:02,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1656233583, now seen corresponding path program 1 times [2023-08-30 23:15:02,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:02,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202795850] [2023-08-30 23:15:02,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:02,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:15:03,160 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 23:15:03,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:15:03,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202795850] [2023-08-30 23:15:03,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202795850] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:15:03,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:15:03,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:15:03,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000498395] [2023-08-30 23:15:03,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:15:03,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:15:03,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:15:03,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:15:03,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:15:03,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2023-08-30 23:15:03,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 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 23:15:03,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:15:03,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2023-08-30 23:15:03,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:15:04,222 INFO L130 PetriNetUnfolder]: 8758/12261 cut-off events. [2023-08-30 23:15:04,222 INFO L131 PetriNetUnfolder]: For 13258/13272 co-relation queries the response was YES. [2023-08-30 23:15:04,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38124 conditions, 12261 events. 8758/12261 cut-off events. For 13258/13272 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 65235 event pairs, 825 based on Foata normal form. 438/12697 useless extension candidates. Maximal degree in co-relation 38108. Up to 6901 conditions per place. [2023-08-30 23:15:04,278 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 53 selfloop transitions, 20 changer transitions 34/108 dead transitions. [2023-08-30 23:15:04,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 108 transitions, 678 flow [2023-08-30 23:15:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:15:04,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:15:04,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 810 transitions. [2023-08-30 23:15:04,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49240121580547114 [2023-08-30 23:15:04,281 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 810 transitions. [2023-08-30 23:15:04,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 810 transitions. [2023-08-30 23:15:04,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:15:04,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 810 transitions. [2023-08-30 23:15:04,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 115.71428571428571) internal successors, (810), 7 states have internal predecessors, (810), 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 23:15:04,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 23:15:04,286 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 23:15:04,286 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 158 flow. Second operand 7 states and 810 transitions. [2023-08-30 23:15:04,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 108 transitions, 678 flow [2023-08-30 23:15:04,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 108 transitions, 670 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 23:15:04,336 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 317 flow [2023-08-30 23:15:04,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=317, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-08-30 23:15:04,337 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2023-08-30 23:15:04,337 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 317 flow [2023-08-30 23:15:04,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 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 23:15:04,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:04,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:04,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 23:15:04,338 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:04,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:04,338 INFO L85 PathProgramCache]: Analyzing trace with hash -196410352, now seen corresponding path program 1 times [2023-08-30 23:15:04,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:04,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988447728] [2023-08-30 23:15:04,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:04,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:15:04,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:15:04,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:15:04,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988447728] [2023-08-30 23:15:04,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988447728] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:15:04,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:15:04,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:15:04,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675326678] [2023-08-30 23:15:04,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:15:04,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:15:04,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:15:04,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:15:04,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:15:04,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2023-08-30 23:15:04,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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 23:15:04,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:15:04,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2023-08-30 23:15:04,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:15:05,657 INFO L130 PetriNetUnfolder]: 8315/11888 cut-off events. [2023-08-30 23:15:05,658 INFO L131 PetriNetUnfolder]: For 33695/33695 co-relation queries the response was YES. [2023-08-30 23:15:05,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45482 conditions, 11888 events. 8315/11888 cut-off events. For 33695/33695 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 65591 event pairs, 903 based on Foata normal form. 376/12264 useless extension candidates. Maximal degree in co-relation 45460. Up to 6589 conditions per place. [2023-08-30 23:15:05,706 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 62 selfloop transitions, 25 changer transitions 37/125 dead transitions. [2023-08-30 23:15:05,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 125 transitions, 1063 flow [2023-08-30 23:15:05,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:15:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:15:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 805 transitions. [2023-08-30 23:15:05,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2023-08-30 23:15:05,709 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 805 transitions. [2023-08-30 23:15:05,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 805 transitions. [2023-08-30 23:15:05,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:15:05,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 805 transitions. [2023-08-30 23:15:05,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 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 23:15:05,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 23:15:05,713 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 23:15:05,713 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 317 flow. Second operand 7 states and 805 transitions. [2023-08-30 23:15:05,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 125 transitions, 1063 flow [2023-08-30 23:15:05,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 125 transitions, 1047 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-30 23:15:05,817 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 622 flow [2023-08-30 23:15:05,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=622, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2023-08-30 23:15:05,818 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2023-08-30 23:15:05,818 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 622 flow [2023-08-30 23:15:05,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 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 23:15:05,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:05,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:05,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 23:15:05,819 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:05,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:05,819 INFO L85 PathProgramCache]: Analyzing trace with hash -672716148, now seen corresponding path program 1 times [2023-08-30 23:15:05,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:05,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253292566] [2023-08-30 23:15:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:05,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:15:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:15:06,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:15:06,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253292566] [2023-08-30 23:15:06,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253292566] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:15:06,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:15:06,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:15:06,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101454736] [2023-08-30 23:15:06,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:15:06,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:15:06,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:15:06,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:15:06,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:15:06,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2023-08-30 23:15:06,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 622 flow. Second operand has 5 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 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 23:15:06,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:15:06,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2023-08-30 23:15:06,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:15:07,332 INFO L130 PetriNetUnfolder]: 10113/14332 cut-off events. [2023-08-30 23:15:07,332 INFO L131 PetriNetUnfolder]: For 62174/62174 co-relation queries the response was YES. [2023-08-30 23:15:07,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61179 conditions, 14332 events. 10113/14332 cut-off events. For 62174/62174 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 79793 event pairs, 1955 based on Foata normal form. 336/14668 useless extension candidates. Maximal degree in co-relation 61152. Up to 5959 conditions per place. [2023-08-30 23:15:07,394 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 63 selfloop transitions, 41 changer transitions 33/138 dead transitions. [2023-08-30 23:15:07,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 138 transitions, 1396 flow [2023-08-30 23:15:07,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:15:07,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:15:07,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 803 transitions. [2023-08-30 23:15:07,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48814589665653496 [2023-08-30 23:15:07,397 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 803 transitions. [2023-08-30 23:15:07,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 803 transitions. [2023-08-30 23:15:07,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:15:07,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 803 transitions. [2023-08-30 23:15:07,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 23:15:07,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 23:15:07,402 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 23:15:07,402 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 622 flow. Second operand 7 states and 803 transitions. [2023-08-30 23:15:07,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 138 transitions, 1396 flow [2023-08-30 23:15:07,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 138 transitions, 1380 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-30 23:15:07,499 INFO L231 Difference]: Finished difference. Result has 70 places, 77 transitions, 971 flow [2023-08-30 23:15:07,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=971, PETRI_PLACES=70, PETRI_TRANSITIONS=77} [2023-08-30 23:15:07,500 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-08-30 23:15:07,500 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 77 transitions, 971 flow [2023-08-30 23:15:07,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 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 23:15:07,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:07,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:07,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 23:15:07,501 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:07,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:07,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2006318020, now seen corresponding path program 1 times [2023-08-30 23:15:07,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:07,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292112691] [2023-08-30 23:15:07,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:07,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:15:07,887 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 23:15:07,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:15:07,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292112691] [2023-08-30 23:15:07,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292112691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:15:07,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:15:07,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:15:07,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538664331] [2023-08-30 23:15:07,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:15:07,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:15:07,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:15:07,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:15:07,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:15:07,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 235 [2023-08-30 23:15:07,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 77 transitions, 971 flow. Second operand has 6 states, 6 states have (on average 113.66666666666667) internal successors, (682), 6 states have internal predecessors, (682), 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 23:15:07,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:15:07,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 235 [2023-08-30 23:15:07,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:15:09,204 INFO L130 PetriNetUnfolder]: 9622/14180 cut-off events. [2023-08-30 23:15:09,204 INFO L131 PetriNetUnfolder]: For 96937/98364 co-relation queries the response was YES. [2023-08-30 23:15:09,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65024 conditions, 14180 events. 9622/14180 cut-off events. For 96937/98364 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 85456 event pairs, 2375 based on Foata normal form. 1033/14994 useless extension candidates. Maximal degree in co-relation 64989. Up to 9641 conditions per place. [2023-08-30 23:15:09,319 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 92 selfloop transitions, 12 changer transitions 22/147 dead transitions. [2023-08-30 23:15:09,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 147 transitions, 1932 flow [2023-08-30 23:15:09,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:15:09,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:15:09,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 729 transitions. [2023-08-30 23:15:09,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170212765957447 [2023-08-30 23:15:09,321 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 729 transitions. [2023-08-30 23:15:09,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 729 transitions. [2023-08-30 23:15:09,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:15:09,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 729 transitions. [2023-08-30 23:15:09,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 121.5) internal successors, (729), 6 states have internal predecessors, (729), 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 23:15:09,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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 23:15:09,325 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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 23:15:09,325 INFO L175 Difference]: Start difference. First operand has 70 places, 77 transitions, 971 flow. Second operand 6 states and 729 transitions. [2023-08-30 23:15:09,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 147 transitions, 1932 flow [2023-08-30 23:15:09,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 147 transitions, 1910 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-30 23:15:09,464 INFO L231 Difference]: Finished difference. Result has 72 places, 85 transitions, 1098 flow [2023-08-30 23:15:09,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1098, PETRI_PLACES=72, PETRI_TRANSITIONS=85} [2023-08-30 23:15:09,467 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2023-08-30 23:15:09,467 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 85 transitions, 1098 flow [2023-08-30 23:15:09,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.66666666666667) internal successors, (682), 6 states have internal predecessors, (682), 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 23:15:09,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:09,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:09,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 23:15:09,468 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:09,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:09,469 INFO L85 PathProgramCache]: Analyzing trace with hash 271270556, now seen corresponding path program 1 times [2023-08-30 23:15:09,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:09,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727746041] [2023-08-30 23:15:09,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:09,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:15:10,082 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 23:15:10,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:15:10,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727746041] [2023-08-30 23:15:10,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727746041] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:15:10,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:15:10,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:15:10,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416347604] [2023-08-30 23:15:10,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:15:10,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:15:10,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:15:10,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:15:10,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:15:10,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-08-30 23:15:10,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 85 transitions, 1098 flow. Second operand has 7 states, 7 states have (on average 111.42857142857143) internal successors, (780), 7 states have internal predecessors, (780), 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 23:15:10,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:15:10,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-08-30 23:15:10,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:15:11,456 INFO L130 PetriNetUnfolder]: 10332/15054 cut-off events. [2023-08-30 23:15:11,456 INFO L131 PetriNetUnfolder]: For 111662/113297 co-relation queries the response was YES. [2023-08-30 23:15:11,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74190 conditions, 15054 events. 10332/15054 cut-off events. For 111662/113297 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 90031 event pairs, 1773 based on Foata normal form. 944/15731 useless extension candidates. Maximal degree in co-relation 74153. Up to 10500 conditions per place. [2023-08-30 23:15:11,543 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 93 selfloop transitions, 30 changer transitions 13/157 dead transitions. [2023-08-30 23:15:11,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 157 transitions, 2149 flow [2023-08-30 23:15:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:15:11,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:15:11,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 717 transitions. [2023-08-30 23:15:11,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085106382978724 [2023-08-30 23:15:11,545 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 717 transitions. [2023-08-30 23:15:11,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 717 transitions. [2023-08-30 23:15:11,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:15:11,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 717 transitions. [2023-08-30 23:15:11,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.5) internal successors, (717), 6 states have internal predecessors, (717), 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 23:15:11,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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 23:15:11,549 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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 23:15:11,549 INFO L175 Difference]: Start difference. First operand has 72 places, 85 transitions, 1098 flow. Second operand 6 states and 717 transitions. [2023-08-30 23:15:11,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 157 transitions, 2149 flow [2023-08-30 23:15:11,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 157 transitions, 2068 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 23:15:11,671 INFO L231 Difference]: Finished difference. Result has 76 places, 105 transitions, 1449 flow [2023-08-30 23:15:11,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1449, PETRI_PLACES=76, PETRI_TRANSITIONS=105} [2023-08-30 23:15:11,672 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2023-08-30 23:15:11,672 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 105 transitions, 1449 flow [2023-08-30 23:15:11,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.42857142857143) internal successors, (780), 7 states have internal predecessors, (780), 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 23:15:11,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:11,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:11,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 23:15:11,673 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:11,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:11,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1653571782, now seen corresponding path program 2 times [2023-08-30 23:15:11,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:11,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169728831] [2023-08-30 23:15:11,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:11,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:15:12,101 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 23:15:12,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:15:12,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169728831] [2023-08-30 23:15:12,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169728831] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:15:12,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:15:12,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:15:12,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624424363] [2023-08-30 23:15:12,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:15:12,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:15:12,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:15:12,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:15:12,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:15:12,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 235 [2023-08-30 23:15:12,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 105 transitions, 1449 flow. Second operand has 8 states, 8 states have (on average 100.125) internal successors, (801), 8 states have internal predecessors, (801), 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 23:15:12,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:15:12,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 235 [2023-08-30 23:15:12,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:15:13,777 INFO L130 PetriNetUnfolder]: 14125/19886 cut-off events. [2023-08-30 23:15:13,778 INFO L131 PetriNetUnfolder]: For 144352/144352 co-relation queries the response was YES. [2023-08-30 23:15:13,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102998 conditions, 19886 events. 14125/19886 cut-off events. For 144352/144352 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 109918 event pairs, 1035 based on Foata normal form. 552/20438 useless extension candidates. Maximal degree in co-relation 102958. Up to 6877 conditions per place. [2023-08-30 23:15:13,890 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 134 selfloop transitions, 50 changer transitions 61/245 dead transitions. [2023-08-30 23:15:13,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 245 transitions, 3559 flow [2023-08-30 23:15:13,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 23:15:13,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 23:15:13,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 999 transitions. [2023-08-30 23:15:13,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4723404255319149 [2023-08-30 23:15:13,893 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 999 transitions. [2023-08-30 23:15:13,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 999 transitions. [2023-08-30 23:15:13,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:15:13,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 999 transitions. [2023-08-30 23:15:13,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 111.0) internal successors, (999), 9 states have internal predecessors, (999), 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 23:15:13,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 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 23:15:13,898 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 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 23:15:13,898 INFO L175 Difference]: Start difference. First operand has 76 places, 105 transitions, 1449 flow. Second operand 9 states and 999 transitions. [2023-08-30 23:15:13,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 245 transitions, 3559 flow [2023-08-30 23:15:14,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 245 transitions, 3516 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-30 23:15:14,126 INFO L231 Difference]: Finished difference. Result has 87 places, 123 transitions, 1974 flow [2023-08-30 23:15:14,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1408, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1974, PETRI_PLACES=87, PETRI_TRANSITIONS=123} [2023-08-30 23:15:14,126 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2023-08-30 23:15:14,127 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 123 transitions, 1974 flow [2023-08-30 23:15:14,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 100.125) internal successors, (801), 8 states have internal predecessors, (801), 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 23:15:14,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:14,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:14,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 23:15:14,128 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:14,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:14,128 INFO L85 PathProgramCache]: Analyzing trace with hash -175886107, now seen corresponding path program 1 times [2023-08-30 23:15:14,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:14,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924694774] [2023-08-30 23:15:14,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:14,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:15:14,835 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 23:15:14,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:15:14,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924694774] [2023-08-30 23:15:14,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924694774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:15:14,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:15:14,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:15:14,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428598003] [2023-08-30 23:15:14,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:15:14,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:15:14,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:15:14,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:15:14,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:15:14,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-08-30 23:15:14,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 123 transitions, 1974 flow. Second operand has 7 states, 7 states have (on average 98.57142857142857) internal successors, (690), 7 states have internal predecessors, (690), 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 23:15:14,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:15:14,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-08-30 23:15:14,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:15:17,581 INFO L130 PetriNetUnfolder]: 15901/22538 cut-off events. [2023-08-30 23:15:17,581 INFO L131 PetriNetUnfolder]: For 222749/222749 co-relation queries the response was YES. [2023-08-30 23:15:17,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125468 conditions, 22538 events. 15901/22538 cut-off events. For 222749/222749 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 130488 event pairs, 1435 based on Foata normal form. 304/22842 useless extension candidates. Maximal degree in co-relation 125422. Up to 10239 conditions per place. [2023-08-30 23:15:17,754 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 119 selfloop transitions, 138 changer transitions 49/306 dead transitions. [2023-08-30 23:15:17,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 306 transitions, 4703 flow [2023-08-30 23:15:17,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 23:15:17,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 23:15:17,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1409 transitions. [2023-08-30 23:15:17,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612111292962357 [2023-08-30 23:15:17,759 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1409 transitions. [2023-08-30 23:15:17,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1409 transitions. [2023-08-30 23:15:17,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:15:17,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1409 transitions. [2023-08-30 23:15:17,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 108.38461538461539) internal successors, (1409), 13 states have internal predecessors, (1409), 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 23:15:17,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 235.0) internal successors, (3290), 14 states have internal predecessors, (3290), 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 23:15:17,766 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 235.0) internal successors, (3290), 14 states have internal predecessors, (3290), 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 23:15:17,766 INFO L175 Difference]: Start difference. First operand has 87 places, 123 transitions, 1974 flow. Second operand 13 states and 1409 transitions. [2023-08-30 23:15:17,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 306 transitions, 4703 flow [2023-08-30 23:15:19,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 306 transitions, 4591 flow, removed 48 selfloop flow, removed 3 redundant places. [2023-08-30 23:15:19,142 INFO L231 Difference]: Finished difference. Result has 101 places, 190 transitions, 3636 flow [2023-08-30 23:15:19,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3636, PETRI_PLACES=101, PETRI_TRANSITIONS=190} [2023-08-30 23:15:19,142 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2023-08-30 23:15:19,142 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 190 transitions, 3636 flow [2023-08-30 23:15:19,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.57142857142857) internal successors, (690), 7 states have internal predecessors, (690), 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 23:15:19,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:19,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:19,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 23:15:19,143 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:19,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:19,144 INFO L85 PathProgramCache]: Analyzing trace with hash 963103137, now seen corresponding path program 2 times [2023-08-30 23:15:19,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:19,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339173435] [2023-08-30 23:15:19,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:19,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:15:19,841 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 23:15:19,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:15:19,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339173435] [2023-08-30 23:15:19,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339173435] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:15:19,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:15:19,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:15:19,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070302498] [2023-08-30 23:15:19,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:15:19,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:15:19,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:15:19,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:15:19,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:15:19,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 235 [2023-08-30 23:15:19,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 190 transitions, 3636 flow. Second operand has 8 states, 8 states have (on average 106.25) internal successors, (850), 8 states have internal predecessors, (850), 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 23:15:19,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:15:19,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 235 [2023-08-30 23:15:19,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:15:22,203 INFO L130 PetriNetUnfolder]: 13960/20149 cut-off events. [2023-08-30 23:15:22,204 INFO L131 PetriNetUnfolder]: For 259946/261243 co-relation queries the response was YES. [2023-08-30 23:15:22,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126765 conditions, 20149 events. 13960/20149 cut-off events. For 259946/261243 co-relation queries the response was YES. Maximal size of possible extension queue 951. Compared 123652 event pairs, 3305 based on Foata normal form. 742/20340 useless extension candidates. Maximal degree in co-relation 126712. Up to 13211 conditions per place. [2023-08-30 23:15:22,471 INFO L137 encePairwiseOnDemand]: 224/235 looper letters, 157 selfloop transitions, 51 changer transitions 22/280 dead transitions. [2023-08-30 23:15:22,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 280 transitions, 5315 flow [2023-08-30 23:15:22,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 23:15:22,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 23:15:22,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 912 transitions. [2023-08-30 23:15:22,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2023-08-30 23:15:22,495 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 912 transitions. [2023-08-30 23:15:22,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 912 transitions. [2023-08-30 23:15:22,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:15:22,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 912 transitions. [2023-08-30 23:15:22,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 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 23:15:22,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 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 23:15:22,499 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 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 23:15:22,499 INFO L175 Difference]: Start difference. First operand has 101 places, 190 transitions, 3636 flow. Second operand 8 states and 912 transitions. [2023-08-30 23:15:22,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 280 transitions, 5315 flow [2023-08-30 23:15:24,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 280 transitions, 5019 flow, removed 136 selfloop flow, removed 8 redundant places. [2023-08-30 23:15:24,274 INFO L231 Difference]: Finished difference. Result has 101 places, 216 transitions, 4119 flow [2023-08-30 23:15:24,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3424, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4119, PETRI_PLACES=101, PETRI_TRANSITIONS=216} [2023-08-30 23:15:24,275 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2023-08-30 23:15:24,275 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 216 transitions, 4119 flow [2023-08-30 23:15:24,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 106.25) internal successors, (850), 8 states have internal predecessors, (850), 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 23:15:24,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:24,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:24,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 23:15:24,276 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:24,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:24,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1600301353, now seen corresponding path program 3 times [2023-08-30 23:15:24,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:24,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593065444] [2023-08-30 23:15:24,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:24,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:15:24,862 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 23:15:24,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:15:24,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593065444] [2023-08-30 23:15:24,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593065444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:15:24,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:15:24,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:15:24,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307440860] [2023-08-30 23:15:24,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:15:24,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:15:24,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:15:24,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:15:24,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:15:24,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 235 [2023-08-30 23:15:24,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 216 transitions, 4119 flow. Second operand has 8 states, 8 states have (on average 99.25) internal successors, (794), 8 states have internal predecessors, (794), 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 23:15:24,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:15:24,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 235 [2023-08-30 23:15:24,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:15:27,506 INFO L130 PetriNetUnfolder]: 16674/23787 cut-off events. [2023-08-30 23:15:27,507 INFO L131 PetriNetUnfolder]: For 297773/297773 co-relation queries the response was YES. [2023-08-30 23:15:27,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150859 conditions, 23787 events. 16674/23787 cut-off events. For 297773/297773 co-relation queries the response was YES. Maximal size of possible extension queue 987. Compared 140617 event pairs, 1854 based on Foata normal form. 272/24059 useless extension candidates. Maximal degree in co-relation 150806. Up to 11253 conditions per place. [2023-08-30 23:15:27,804 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 168 selfloop transitions, 143 changer transitions 48/359 dead transitions. [2023-08-30 23:15:27,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 359 transitions, 6727 flow [2023-08-30 23:15:27,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 23:15:27,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 23:15:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1094 transitions. [2023-08-30 23:15:27,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465531914893617 [2023-08-30 23:15:27,807 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1094 transitions. [2023-08-30 23:15:27,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1094 transitions. [2023-08-30 23:15:27,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:15:27,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1094 transitions. [2023-08-30 23:15:27,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 109.4) internal successors, (1094), 10 states have internal predecessors, (1094), 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 23:15:27,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 235.0) internal successors, (2585), 11 states have internal predecessors, (2585), 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 23:15:27,834 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 235.0) internal successors, (2585), 11 states have internal predecessors, (2585), 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 23:15:27,835 INFO L175 Difference]: Start difference. First operand has 101 places, 216 transitions, 4119 flow. Second operand 10 states and 1094 transitions. [2023-08-30 23:15:27,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 359 transitions, 6727 flow [2023-08-30 23:15:29,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 359 transitions, 6582 flow, removed 37 selfloop flow, removed 5 redundant places. [2023-08-30 23:15:29,836 INFO L231 Difference]: Finished difference. Result has 112 places, 263 transitions, 5526 flow [2023-08-30 23:15:29,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4015, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5526, PETRI_PLACES=112, PETRI_TRANSITIONS=263} [2023-08-30 23:15:29,837 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 70 predicate places. [2023-08-30 23:15:29,837 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 263 transitions, 5526 flow [2023-08-30 23:15:29,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 99.25) internal successors, (794), 8 states have internal predecessors, (794), 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 23:15:29,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:29,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:29,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 23:15:29,851 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:29,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:29,851 INFO L85 PathProgramCache]: Analyzing trace with hash 2031542937, now seen corresponding path program 4 times [2023-08-30 23:15:29,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:29,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983161854] [2023-08-30 23:15:29,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:29,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:15:30,430 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 23:15:30,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:15:30,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983161854] [2023-08-30 23:15:30,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983161854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:15:30,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:15:30,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:15:30,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909039997] [2023-08-30 23:15:30,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:15:30,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:15:30,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:15:30,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:15:30,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:15:30,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-08-30 23:15:30,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 263 transitions, 5526 flow. Second operand has 7 states, 7 states have (on average 111.57142857142857) internal successors, (781), 7 states have internal predecessors, (781), 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 23:15:30,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:15:30,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-08-30 23:15:30,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:15:33,326 INFO L130 PetriNetUnfolder]: 14187/21191 cut-off events. [2023-08-30 23:15:33,328 INFO L131 PetriNetUnfolder]: For 344433/346863 co-relation queries the response was YES. [2023-08-30 23:15:33,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142876 conditions, 21191 events. 14187/21191 cut-off events. For 344433/346863 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 140847 event pairs, 1991 based on Foata normal form. 1652/22122 useless extension candidates. Maximal degree in co-relation 142815. Up to 11029 conditions per place. [2023-08-30 23:15:33,651 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 199 selfloop transitions, 23 changer transitions 24/319 dead transitions. [2023-08-30 23:15:33,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 319 transitions, 6855 flow [2023-08-30 23:15:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:15:33,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:15:33,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 826 transitions. [2023-08-30 23:15:33,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2023-08-30 23:15:33,654 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 826 transitions. [2023-08-30 23:15:33,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 826 transitions. [2023-08-30 23:15:33,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:15:33,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 826 transitions. [2023-08-30 23:15:33,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 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 23:15:33,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 23:15:33,658 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 23:15:33,658 INFO L175 Difference]: Start difference. First operand has 112 places, 263 transitions, 5526 flow. Second operand 7 states and 826 transitions. [2023-08-30 23:15:33,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 319 transitions, 6855 flow [2023-08-30 23:15:35,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 319 transitions, 6749 flow, removed 48 selfloop flow, removed 3 redundant places. [2023-08-30 23:15:35,716 INFO L231 Difference]: Finished difference. Result has 115 places, 263 transitions, 5511 flow [2023-08-30 23:15:35,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5442, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5511, PETRI_PLACES=115, PETRI_TRANSITIONS=263} [2023-08-30 23:15:35,732 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 73 predicate places. [2023-08-30 23:15:35,733 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 263 transitions, 5511 flow [2023-08-30 23:15:35,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.57142857142857) internal successors, (781), 7 states have internal predecessors, (781), 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 23:15:35,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:35,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:35,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 23:15:35,734 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:35,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:35,734 INFO L85 PathProgramCache]: Analyzing trace with hash 886799159, now seen corresponding path program 1 times [2023-08-30 23:15:35,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:35,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766896702] [2023-08-30 23:15:35,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:35,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:15:35,872 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 23:15:35,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:15:35,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766896702] [2023-08-30 23:15:35,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766896702] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:15:35,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:15:35,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:15:35,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005490339] [2023-08-30 23:15:35,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:15:35,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:15:35,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:15:35,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:15:35,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:15:35,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-08-30 23:15:35,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 263 transitions, 5511 flow. Second operand has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 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 23:15:35,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:15:35,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-08-30 23:15:35,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:15:37,973 INFO L130 PetriNetUnfolder]: 10864/16522 cut-off events. [2023-08-30 23:15:37,973 INFO L131 PetriNetUnfolder]: For 452829/462901 co-relation queries the response was YES. [2023-08-30 23:15:38,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111515 conditions, 16522 events. 10864/16522 cut-off events. For 452829/462901 co-relation queries the response was YES. Maximal size of possible extension queue 1142. Compared 115632 event pairs, 1956 based on Foata normal form. 5530/21534 useless extension candidates. Maximal degree in co-relation 111452. Up to 11110 conditions per place. [2023-08-30 23:15:38,099 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 375 selfloop transitions, 10 changer transitions 74/529 dead transitions. [2023-08-30 23:15:38,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 529 transitions, 12169 flow [2023-08-30 23:15:38,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:15:38,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:15:38,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 615 transitions. [2023-08-30 23:15:38,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2023-08-30 23:15:38,102 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 615 transitions. [2023-08-30 23:15:38,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 615 transitions. [2023-08-30 23:15:38,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:15:38,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 615 transitions. [2023-08-30 23:15:38,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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 23:15:38,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 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 23:15:38,117 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 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 23:15:38,132 INFO L175 Difference]: Start difference. First operand has 115 places, 263 transitions, 5511 flow. Second operand 5 states and 615 transitions. [2023-08-30 23:15:38,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 529 transitions, 12169 flow [2023-08-30 23:15:38,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 529 transitions, 12107 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-08-30 23:15:38,739 INFO L231 Difference]: Finished difference. Result has 114 places, 254 transitions, 5285 flow [2023-08-30 23:15:38,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5110, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5285, PETRI_PLACES=114, PETRI_TRANSITIONS=254} [2023-08-30 23:15:38,740 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2023-08-30 23:15:38,740 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 254 transitions, 5285 flow [2023-08-30 23:15:38,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 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 23:15:38,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:38,741 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 23:15:38,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 23:15:38,741 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:38,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:38,741 INFO L85 PathProgramCache]: Analyzing trace with hash -597741335, now seen corresponding path program 1 times [2023-08-30 23:15:38,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:38,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159205336] [2023-08-30 23:15:38,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:38,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:15:38,947 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 23:15:38,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:15:38,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159205336] [2023-08-30 23:15:38,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159205336] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:15:38,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:15:38,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:15:38,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236452600] [2023-08-30 23:15:38,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:15:38,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:15:38,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:15:38,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:15:38,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:15:38,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-08-30 23:15:38,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 254 transitions, 5285 flow. Second operand has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 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 23:15:38,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:15:38,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-08-30 23:15:38,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:15:40,739 INFO L130 PetriNetUnfolder]: 8408/13257 cut-off events. [2023-08-30 23:15:40,739 INFO L131 PetriNetUnfolder]: For 392495/402003 co-relation queries the response was YES. [2023-08-30 23:15:40,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98457 conditions, 13257 events. 8408/13257 cut-off events. For 392495/402003 co-relation queries the response was YES. Maximal size of possible extension queue 957. Compared 95782 event pairs, 503 based on Foata normal form. 4870/17740 useless extension candidates. Maximal degree in co-relation 98395. Up to 5449 conditions per place. [2023-08-30 23:15:40,859 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 422 selfloop transitions, 18 changer transitions 137/635 dead transitions. [2023-08-30 23:15:40,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 635 transitions, 14742 flow [2023-08-30 23:15:40,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:15:40,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:15:40,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 862 transitions. [2023-08-30 23:15:40,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5240121580547112 [2023-08-30 23:15:40,861 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 862 transitions. [2023-08-30 23:15:40,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 862 transitions. [2023-08-30 23:15:40,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:15:40,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 862 transitions. [2023-08-30 23:15:40,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.14285714285714) internal successors, (862), 7 states have internal predecessors, (862), 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 23:15:40,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 23:15:40,865 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 23:15:40,865 INFO L175 Difference]: Start difference. First operand has 114 places, 254 transitions, 5285 flow. Second operand 7 states and 862 transitions. [2023-08-30 23:15:40,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 635 transitions, 14742 flow [2023-08-30 23:15:41,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 635 transitions, 14334 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-08-30 23:15:41,204 INFO L231 Difference]: Finished difference. Result has 120 places, 221 transitions, 4449 flow [2023-08-30 23:15:41,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4236, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4449, PETRI_PLACES=120, PETRI_TRANSITIONS=221} [2023-08-30 23:15:41,205 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 78 predicate places. [2023-08-30 23:15:41,205 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 221 transitions, 4449 flow [2023-08-30 23:15:41,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 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 23:15:41,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:41,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:41,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 23:15:41,206 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:41,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:41,206 INFO L85 PathProgramCache]: Analyzing trace with hash -989767449, now seen corresponding path program 1 times [2023-08-30 23:15:41,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:41,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226672] [2023-08-30 23:15:41,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:41,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:15:41,452 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 23:15:41,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:15:41,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226672] [2023-08-30 23:15:41,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226672] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:15:41,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:15:41,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:15:41,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069919804] [2023-08-30 23:15:41,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:15:41,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:15:41,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:15:41,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:15:41,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:15:41,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2023-08-30 23:15:41,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 221 transitions, 4449 flow. Second operand has 5 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 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 23:15:41,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:15:41,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2023-08-30 23:15:41,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:15:44,096 INFO L130 PetriNetUnfolder]: 12878/20515 cut-off events. [2023-08-30 23:15:44,097 INFO L131 PetriNetUnfolder]: For 379738/380508 co-relation queries the response was YES. [2023-08-30 23:15:44,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162548 conditions, 20515 events. 12878/20515 cut-off events. For 379738/380508 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 148804 event pairs, 2444 based on Foata normal form. 654/21124 useless extension candidates. Maximal degree in co-relation 162484. Up to 10537 conditions per place. [2023-08-30 23:15:44,341 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 175 selfloop transitions, 60 changer transitions 125/364 dead transitions. [2023-08-30 23:15:44,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 364 transitions, 7258 flow [2023-08-30 23:15:44,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:15:44,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:15:44,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 796 transitions. [2023-08-30 23:15:44,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838905775075988 [2023-08-30 23:15:44,343 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 796 transitions. [2023-08-30 23:15:44,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 796 transitions. [2023-08-30 23:15:44,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:15:44,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 796 transitions. [2023-08-30 23:15:44,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.71428571428571) internal successors, (796), 7 states have internal predecessors, (796), 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 23:15:44,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 23:15:44,346 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 23:15:44,346 INFO L175 Difference]: Start difference. First operand has 120 places, 221 transitions, 4449 flow. Second operand 7 states and 796 transitions. [2023-08-30 23:15:44,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 364 transitions, 7258 flow [2023-08-30 23:15:46,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 364 transitions, 7111 flow, removed 53 selfloop flow, removed 4 redundant places. [2023-08-30 23:15:46,752 INFO L231 Difference]: Finished difference. Result has 126 places, 178 transitions, 3681 flow [2023-08-30 23:15:46,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4396, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3681, PETRI_PLACES=126, PETRI_TRANSITIONS=178} [2023-08-30 23:15:46,753 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 84 predicate places. [2023-08-30 23:15:46,753 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 178 transitions, 3681 flow [2023-08-30 23:15:46,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 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 23:15:46,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:46,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:46,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 23:15:46,754 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:46,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:46,754 INFO L85 PathProgramCache]: Analyzing trace with hash -706237089, now seen corresponding path program 1 times [2023-08-30 23:15:46,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:46,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896741310] [2023-08-30 23:15:46,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:46,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:15:46,885 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 23:15:46,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:15:46,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896741310] [2023-08-30 23:15:46,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896741310] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:15:46,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:15:46,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:15:46,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096110407] [2023-08-30 23:15:46,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:15:46,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:15:46,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:15:46,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:15:46,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:15:46,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-08-30 23:15:46,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 178 transitions, 3681 flow. Second operand has 6 states, 6 states have (on average 113.16666666666667) internal successors, (679), 6 states have internal predecessors, (679), 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 23:15:46,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:15:46,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-08-30 23:15:46,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:15:47,995 INFO L130 PetriNetUnfolder]: 4020/6746 cut-off events. [2023-08-30 23:15:47,995 INFO L131 PetriNetUnfolder]: For 178139/181295 co-relation queries the response was YES. [2023-08-30 23:15:48,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50404 conditions, 6746 events. 4020/6746 cut-off events. For 178139/181295 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 47339 event pairs, 206 based on Foata normal form. 1806/8382 useless extension candidates. Maximal degree in co-relation 50337. Up to 2297 conditions per place. [2023-08-30 23:15:48,066 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 308 selfloop transitions, 19 changer transitions 210/571 dead transitions. [2023-08-30 23:15:48,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 571 transitions, 13186 flow [2023-08-30 23:15:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 23:15:48,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 23:15:48,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1099 transitions. [2023-08-30 23:15:48,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196217494089834 [2023-08-30 23:15:48,083 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1099 transitions. [2023-08-30 23:15:48,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1099 transitions. [2023-08-30 23:15:48,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:15:48,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1099 transitions. [2023-08-30 23:15:48,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 122.11111111111111) internal successors, (1099), 9 states have internal predecessors, (1099), 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 23:15:48,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 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 23:15:48,109 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 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 23:15:48,109 INFO L175 Difference]: Start difference. First operand has 126 places, 178 transitions, 3681 flow. Second operand 9 states and 1099 transitions. [2023-08-30 23:15:48,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 571 transitions, 13186 flow [2023-08-30 23:15:48,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 571 transitions, 12072 flow, removed 65 selfloop flow, removed 14 redundant places. [2023-08-30 23:15:48,377 INFO L231 Difference]: Finished difference. Result has 118 places, 150 transitions, 2705 flow [2023-08-30 23:15:48,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2735, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2705, PETRI_PLACES=118, PETRI_TRANSITIONS=150} [2023-08-30 23:15:48,378 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 76 predicate places. [2023-08-30 23:15:48,378 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 150 transitions, 2705 flow [2023-08-30 23:15:48,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.16666666666667) internal successors, (679), 6 states have internal predecessors, (679), 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 23:15:48,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:48,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:48,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 23:15:48,379 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:48,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:48,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2136738546, now seen corresponding path program 1 times [2023-08-30 23:15:48,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:48,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030728193] [2023-08-30 23:15:48,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:48,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:15:48,950 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 23:15:48,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:15:48,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030728193] [2023-08-30 23:15:48,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030728193] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:15:48,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:15:48,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:15:48,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730452078] [2023-08-30 23:15:48,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:15:48,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:15:48,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:15:48,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:15:48,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:15:48,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 235 [2023-08-30 23:15:48,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 150 transitions, 2705 flow. Second operand has 6 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 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 23:15:48,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:15:48,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 235 [2023-08-30 23:15:48,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:15:50,255 INFO L130 PetriNetUnfolder]: 5893/10325 cut-off events. [2023-08-30 23:15:50,255 INFO L131 PetriNetUnfolder]: For 165376/165568 co-relation queries the response was YES. [2023-08-30 23:15:50,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78061 conditions, 10325 events. 5893/10325 cut-off events. For 165376/165568 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 76967 event pairs, 642 based on Foata normal form. 175/10481 useless extension candidates. Maximal degree in co-relation 78018. Up to 3773 conditions per place. [2023-08-30 23:15:50,308 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 104 selfloop transitions, 47 changer transitions 195/349 dead transitions. [2023-08-30 23:15:50,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 349 transitions, 6392 flow [2023-08-30 23:15:50,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:15:50,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:15:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 796 transitions. [2023-08-30 23:15:50,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838905775075988 [2023-08-30 23:15:50,310 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 796 transitions. [2023-08-30 23:15:50,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 796 transitions. [2023-08-30 23:15:50,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:15:50,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 796 transitions. [2023-08-30 23:15:50,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.71428571428571) internal successors, (796), 7 states have internal predecessors, (796), 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 23:15:50,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 23:15:50,313 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 23:15:50,313 INFO L175 Difference]: Start difference. First operand has 118 places, 150 transitions, 2705 flow. Second operand 7 states and 796 transitions. [2023-08-30 23:15:50,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 349 transitions, 6392 flow [2023-08-30 23:15:51,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 349 transitions, 6025 flow, removed 140 selfloop flow, removed 4 redundant places. [2023-08-30 23:15:51,236 INFO L231 Difference]: Finished difference. Result has 123 places, 107 transitions, 1951 flow [2023-08-30 23:15:51,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2613, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1951, PETRI_PLACES=123, PETRI_TRANSITIONS=107} [2023-08-30 23:15:51,237 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 81 predicate places. [2023-08-30 23:15:51,237 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 107 transitions, 1951 flow [2023-08-30 23:15:51,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 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 23:15:51,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:51,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:51,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 23:15:51,238 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:51,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:51,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1212472198, now seen corresponding path program 2 times [2023-08-30 23:15:51,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:51,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50533955] [2023-08-30 23:15:51,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:51,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:15:51,377 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 23:15:51,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:15:51,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50533955] [2023-08-30 23:15:51,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50533955] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:15:51,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:15:51,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:15:51,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420612300] [2023-08-30 23:15:51,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:15:51,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:15:51,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:15:51,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:15:51,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:15:51,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-08-30 23:15:51,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 107 transitions, 1951 flow. Second operand has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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 23:15:51,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:15:51,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-08-30 23:15:51,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:15:51,667 INFO L130 PetriNetUnfolder]: 1239/2238 cut-off events. [2023-08-30 23:15:51,667 INFO L131 PetriNetUnfolder]: For 37782/38003 co-relation queries the response was YES. [2023-08-30 23:15:51,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15190 conditions, 2238 events. 1239/2238 cut-off events. For 37782/38003 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 13454 event pairs, 120 based on Foata normal form. 212/2408 useless extension candidates. Maximal degree in co-relation 15145. Up to 791 conditions per place. [2023-08-30 23:15:51,677 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 33 selfloop transitions, 17 changer transitions 164/218 dead transitions. [2023-08-30 23:15:51,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 218 transitions, 4516 flow [2023-08-30 23:15:51,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 23:15:51,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 23:15:51,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 952 transitions. [2023-08-30 23:15:51,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063829787234042 [2023-08-30 23:15:51,678 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 952 transitions. [2023-08-30 23:15:51,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 952 transitions. [2023-08-30 23:15:51,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:15:51,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 952 transitions. [2023-08-30 23:15:51,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 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 23:15:51,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 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 23:15:51,681 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 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 23:15:51,681 INFO L175 Difference]: Start difference. First operand has 123 places, 107 transitions, 1951 flow. Second operand 8 states and 952 transitions. [2023-08-30 23:15:51,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 218 transitions, 4516 flow [2023-08-30 23:15:51,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 218 transitions, 4228 flow, removed 51 selfloop flow, removed 7 redundant places. [2023-08-30 23:15:51,731 INFO L231 Difference]: Finished difference. Result has 117 places, 41 transitions, 454 flow [2023-08-30 23:15:51,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=454, PETRI_PLACES=117, PETRI_TRANSITIONS=41} [2023-08-30 23:15:51,732 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 75 predicate places. [2023-08-30 23:15:51,732 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 41 transitions, 454 flow [2023-08-30 23:15:51,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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 23:15:51,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:15:51,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:51,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 23:15:51,733 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:15:51,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:15:51,733 INFO L85 PathProgramCache]: Analyzing trace with hash -811174431, now seen corresponding path program 1 times [2023-08-30 23:15:51,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:15:51,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545279148] [2023-08-30 23:15:51,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:15:51,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:15:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 23:15:51,754 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 23:15:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 23:15:51,814 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 23:15:51,815 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 23:15:51,815 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-30 23:15:51,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-30 23:15:51,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-30 23:15:51,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-30 23:15:51,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-30 23:15:51,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-30 23:15:51,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-30 23:15:51,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 23:15:51,817 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:15:51,821 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 23:15:51,821 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 23:15:51,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:15:51 BasicIcfg [2023-08-30 23:15:51,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 23:15:51,863 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 23:15:51,863 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 23:15:51,863 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 23:15:51,863 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:14:57" (3/4) ... [2023-08-30 23:15:51,865 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 23:15:51,946 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 23:15:51,946 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 23:15:51,947 INFO L158 Benchmark]: Toolchain (without parser) took 56048.72ms. Allocated memory was 69.2MB in the beginning and 6.7GB in the end (delta: 6.7GB). Free memory was 43.2MB in the beginning and 3.9GB in the end (delta: -3.9GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2023-08-30 23:15:51,947 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 69.2MB. Free memory is still 47.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:15:51,947 INFO L158 Benchmark]: CACSL2BoogieTranslator took 445.76ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 43.2MB in the beginning and 73.0MB in the end (delta: -29.8MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2023-08-30 23:15:51,948 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.03ms. Allocated memory is still 100.7MB. Free memory was 73.0MB in the beginning and 70.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:15:51,948 INFO L158 Benchmark]: Boogie Preprocessor took 43.18ms. Allocated memory is still 100.7MB. Free memory was 70.4MB in the beginning and 68.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:15:51,948 INFO L158 Benchmark]: RCFGBuilder took 581.91ms. Allocated memory is still 100.7MB. Free memory was 68.4MB in the beginning and 67.7MB in the end (delta: 703.9kB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2023-08-30 23:15:51,948 INFO L158 Benchmark]: TraceAbstraction took 54831.09ms. Allocated memory was 100.7MB in the beginning and 6.7GB in the end (delta: 6.6GB). Free memory was 67.1MB in the beginning and 3.9GB in the end (delta: -3.9GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2023-08-30 23:15:51,948 INFO L158 Benchmark]: Witness Printer took 83.63ms. Allocated memory is still 6.7GB. Free memory was 3.9GB in the beginning and 3.9GB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 23:15:51,950 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 69.2MB. Free memory is still 47.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 445.76ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 43.2MB in the beginning and 73.0MB in the end (delta: -29.8MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.03ms. Allocated memory is still 100.7MB. Free memory was 73.0MB in the beginning and 70.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.18ms. Allocated memory is still 100.7MB. Free memory was 70.4MB in the beginning and 68.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 581.91ms. Allocated memory is still 100.7MB. Free memory was 68.4MB in the beginning and 67.7MB in the end (delta: 703.9kB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. * TraceAbstraction took 54831.09ms. Allocated memory was 100.7MB in the beginning and 6.7GB in the end (delta: 6.6GB). Free memory was 67.1MB in the beginning and 3.9GB in the end (delta: -3.9GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. * Witness Printer took 83.63ms. Allocated memory is still 6.7GB. Free memory was 3.9GB in the beginning and 3.9GB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 136 PlacesBefore, 42 PlacesAfterwards, 125 TransitionsBefore, 30 TransitionsAfterwards, 2936 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 106 TotalNumberOfCompositions, 6820 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3180, independent: 3000, independent conditional: 0, independent unconditional: 3000, dependent: 180, dependent conditional: 0, dependent unconditional: 180, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1541, independent: 1507, independent conditional: 0, independent unconditional: 1507, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3180, independent: 1493, independent conditional: 0, independent unconditional: 1493, dependent: 146, dependent conditional: 0, dependent unconditional: 146, unknown: 1541, unknown conditional: 0, unknown unconditional: 1541] , Statistics on independence cache: Total cache size (in pairs): 128, Positive cache size: 111, Positive conditional cache size: 0, Positive unconditional cache size: 111, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p3_EAX = 0; [L714] 0 int __unbuffered_p3_EBX = 0; [L716] 0 int a = 0; [L718] 0 int b = 0; [L719] 0 _Bool main$tmp_guard0; [L720] 0 _Bool main$tmp_guard1; [L722] 0 int x = 0; [L724] 0 int y = 0; [L726] 0 int z = 0; [L727] 0 _Bool z$flush_delayed; [L728] 0 int z$mem_tmp; [L729] 0 _Bool z$r_buff0_thd0; [L730] 0 _Bool z$r_buff0_thd1; [L731] 0 _Bool z$r_buff0_thd2; [L732] 0 _Bool z$r_buff0_thd3; [L733] 0 _Bool z$r_buff0_thd4; [L734] 0 _Bool z$r_buff1_thd0; [L735] 0 _Bool z$r_buff1_thd1; [L736] 0 _Bool z$r_buff1_thd2; [L737] 0 _Bool z$r_buff1_thd3; [L738] 0 _Bool z$r_buff1_thd4; [L739] 0 _Bool z$read_delayed; [L740] 0 int *z$read_delayed_var; [L741] 0 int z$w_buff0; [L742] 0 _Bool z$w_buff0_used; [L743] 0 int z$w_buff1; [L744] 0 _Bool z$w_buff1_used; [L745] 0 _Bool weak$$choice0; [L746] 0 _Bool weak$$choice2; [L844] 0 pthread_t t1253; [L845] FCALL, FORK 0 pthread_create(&t1253, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1253, ((void *)0), P0, ((void *)0))=-1, t1253={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L846] 0 pthread_t t1254; [L847] FCALL, FORK 0 pthread_create(&t1254, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1254, ((void *)0), P1, ((void *)0))=0, t1253={5:0}, t1254={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L848] 0 pthread_t t1255; [L849] FCALL, FORK 0 pthread_create(&t1255, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1255, ((void *)0), P2, ((void *)0))=1, t1253={5:0}, t1254={6:0}, t1255={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L850] 0 pthread_t t1256; [L851] FCALL, FORK 0 pthread_create(&t1256, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1256, ((void *)0), P3, ((void *)0))=2, t1253={5:0}, t1254={6:0}, t1255={7:0}, t1256={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L800] 4 z$w_buff1 = z$w_buff0 [L801] 4 z$w_buff0 = 2 [L802] 4 z$w_buff1_used = z$w_buff0_used [L803] 4 z$w_buff0_used = (_Bool)1 [L804] CALL 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 4 !(!expression) [L804] RET 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L805] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L806] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L807] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L808] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L809] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L810] 4 z$r_buff0_thd4 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L813] 4 a = 1 [L816] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L819] 4 __unbuffered_p3_EBX = b VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L750] 1 b = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L753] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L765] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L768] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L780] 3 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L783] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=1] [L786] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L787] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L788] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L789] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L790] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=1] [L773] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L775] 2 return 0; [L822] 4 z = z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L823] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L824] 4 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L825] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L826] 4 z$r_buff1_thd4 = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=2] [L793] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L795] 3 return 0; [L758] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L760] 1 return 0; [L829] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L831] 4 return 0; [L853] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L855] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L855] RET 0 assume_abort_if_not(main$tmp_guard0) [L857] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L858] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L859] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L860] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L861] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=1, main$tmp_guard1=0, t1253={5:0}, t1254={6:0}, t1255={7:0}, t1256={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=2] [L864] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L865] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L866] 0 z$flush_delayed = weak$$choice2 [L867] 0 z$mem_tmp = z [L868] 0 z = !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L869] 0 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L870] 0 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L871] 0 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L872] 0 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L873] 0 z$r_buff0_thd0 = weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L874] 0 z$r_buff1_thd0 = weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L875] 0 main$tmp_guard1 = !(x == 2 && y == 2 && z == 2 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) [L876] 0 z = z$flush_delayed ? z$mem_tmp : z [L877] 0 z$flush_delayed = (_Bool)0 [L879] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x=2, y=2, z$flush_delayed=0, z$mem_tmp=2, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 851]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 845]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 847]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 165 locations, 7 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: 54.7s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 44.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1595 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1311 mSDsluCounter, 1373 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1095 mSDsCounter, 293 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3748 IncrementalHoareTripleChecker+Invalid, 4041 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 293 mSolverCounterUnsat, 278 mSDtfsCounter, 3748 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5526occurred in iteration=11, InterpolantAutomatonStates: 133, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 342 NumberOfCodeBlocks, 342 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 297 ConstructedInterpolants, 0 QuantifiedInterpolants, 3488 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-30 23:15:51,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE