./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 AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:51:48,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:51:48,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:51:48,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:51:48,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:51:48,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:51:48,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:51:48,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:51:48,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:51:48,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:51:48,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:51:48,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:51:48,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:51:48,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:51:48,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:51:48,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:51:48,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:51:48,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:51:48,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:51:48,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:51:48,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:51:48,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:51:48,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:51:48,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:51:48,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:51:48,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:51:48,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:51:48,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:51:48,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:51:48,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:51:48,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:51:48,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:51:48,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:51:48,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:51:48,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:51:48,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:51:48,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:51:48,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:51:48,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:51:48,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:51:48,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:51:48,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:51:48,620 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:51:48,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:51:48,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:51:48,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:51:48,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:51:48,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:51:48,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:51:48,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:51:48,623 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:51:48,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:51:48,623 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:51:48,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:51:48,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:51:48,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:51:48,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:51:48,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:51:48,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:51:48,624 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:51:48,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:51:48,625 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:51:48,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:51:48,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:51:48,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:51:48,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:51:48,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:51:48,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:51:48,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:51:48,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:51:48,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:51:48,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:51:48,626 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:51:48,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:51:48,627 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:51:48,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:51:48,627 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:51:48,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 473191b5f1326a38296af26dcd2c7f553c42833f82b512e9fb358484309bc769 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:51:48,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:51:48,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:51:48,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:51:48,854 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:51:48,854 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:51:48,855 INFO L432 ainManager$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 16:51:49,744 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:51:49,941 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:51:49,942 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 16:51:49,951 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169f40d95/6c6e78fd9b824f1e9a6508d565e238a8/FLAG29612b8e4 [2023-08-30 16:51:49,960 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169f40d95/6c6e78fd9b824f1e9a6508d565e238a8 [2023-08-30 16:51:49,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:51:49,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:51:49,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:51:49,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:51:49,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:51:49,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:51:49" (1/1) ... [2023-08-30 16:51:49,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71305106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:49, skipping insertion in model container [2023-08-30 16:51:49,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:51:49" (1/1) ... [2023-08-30 16:51:49,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:51:50,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:51:50,102 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 16:51:50,227 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:51:50,237 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:51:50,246 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 16:51:50,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:51:50,348 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:51:50,348 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:51:50,352 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:51:50,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:50 WrapperNode [2023-08-30 16:51:50,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:51:50,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:51:50,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:51:50,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:51:50,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:50" (1/1) ... [2023-08-30 16:51:50,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:50" (1/1) ... [2023-08-30 16:51:50,416 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 167 [2023-08-30 16:51:50,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:51:50,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:51:50,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:51:50,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:51:50,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:50" (1/1) ... [2023-08-30 16:51:50,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:50" (1/1) ... [2023-08-30 16:51:50,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:50" (1/1) ... [2023-08-30 16:51:50,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:50" (1/1) ... [2023-08-30 16:51:50,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:50" (1/1) ... [2023-08-30 16:51:50,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:50" (1/1) ... [2023-08-30 16:51:50,452 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:50" (1/1) ... [2023-08-30 16:51:50,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:50" (1/1) ... [2023-08-30 16:51:50,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:51:50,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:51:50,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:51:50,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:51:50,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:50" (1/1) ... [2023-08-30 16:51:50,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:51:50,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:51:50,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 16:51:50,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 16:51:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:51:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:51:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:51:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:51:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:51:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 16:51:50,521 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 16:51:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 16:51:50,521 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 16:51:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 16:51:50,522 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 16:51:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-30 16:51:50,522 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-30 16:51:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:51:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:51:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:51:50,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:51:50,523 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 16:51:50,614 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:51:50,615 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:51:50,882 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:51:51,002 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:51:51,003 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:51:51,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:51:51 BoogieIcfgContainer [2023-08-30 16:51:51,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:51:51,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:51:51,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:51:51,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:51:51,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:51:49" (1/3) ... [2023-08-30 16:51:51,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1c1121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:51:51, skipping insertion in model container [2023-08-30 16:51:51,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:51:50" (2/3) ... [2023-08-30 16:51:51,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1c1121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:51:51, skipping insertion in model container [2023-08-30 16:51:51,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:51:51" (3/3) ... [2023-08-30 16:51:51,011 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2023-08-30 16:51:51,016 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:51:51,023 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:51:51,024 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 16:51:51,024 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:51:51,075 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 16:51:51,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 129 transitions, 278 flow [2023-08-30 16:51:51,179 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2023-08-30 16:51:51,180 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:51:51,185 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 16:51:51,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 129 transitions, 278 flow [2023-08-30 16:51:51,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 125 transitions, 262 flow [2023-08-30 16:51:51,193 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:51:51,199 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 125 transitions, 262 flow [2023-08-30 16:51:51,200 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 125 transitions, 262 flow [2023-08-30 16:51:51,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 125 transitions, 262 flow [2023-08-30 16:51:51,228 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2023-08-30 16:51:51,233 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:51:51,234 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 16:51:51,236 INFO L119 LiptonReduction]: Number of co-enabled transitions 2936 [2023-08-30 16:51:54,341 INFO L134 LiptonReduction]: Checked pairs total: 6820 [2023-08-30 16:51:54,341 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-30 16:51:54,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:51:54,355 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;@2c438f6c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:51:54,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 16:51:54,360 INFO L130 PetriNetUnfolder]: 0/17 cut-off events. [2023-08-30 16:51:54,361 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:51:54,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:51:54,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:51:54,362 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 16:51:54,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:51:54,365 INFO L85 PathProgramCache]: Analyzing trace with hash -273626498, now seen corresponding path program 1 times [2023-08-30 16:51:54,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:51:54,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938917822] [2023-08-30 16:51:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:51:54,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:51:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:51:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:51:54,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:51:54,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938917822] [2023-08-30 16:51:54,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938917822] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:51:54,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:51:54,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:51:54,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915441095] [2023-08-30 16:51:54,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:51:54,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:51:54,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:51:54,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:51:54,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:51:54,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 235 [2023-08-30 16:51:54,784 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 16:51:54,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:51:54,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 235 [2023-08-30 16:51:54,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:51:55,192 INFO L130 PetriNetUnfolder]: 3113/4519 cut-off events. [2023-08-30 16:51:55,192 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 16:51:55,197 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 16:51:55,209 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 32 selfloop transitions, 2 changer transitions 2/40 dead transitions. [2023-08-30 16:51:55,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 40 transitions, 164 flow [2023-08-30 16:51:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:51:55,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:51:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2023-08-30 16:51:55,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2023-08-30 16:51:55,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2023-08-30 16:51:55,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2023-08-30 16:51:55,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:51:55,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2023-08-30 16:51:55,225 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 16:51:55,228 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 16:51:55,228 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 16:51:55,229 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 72 flow. Second operand 3 states and 384 transitions. [2023-08-30 16:51:55,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 40 transitions, 164 flow [2023-08-30 16:51:55,233 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 16:51:55,234 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 66 flow [2023-08-30 16:51:55,235 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 16:51:55,237 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-08-30 16:51:55,237 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 66 flow [2023-08-30 16:51:55,238 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 16:51:55,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:51:55,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:51:55,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:51:55,239 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 16:51:55,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:51:55,239 INFO L85 PathProgramCache]: Analyzing trace with hash 243126665, now seen corresponding path program 1 times [2023-08-30 16:51:55,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:51:55,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806981008] [2023-08-30 16:51:55,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:51:55,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:51:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:51:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:51:55,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:51:55,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806981008] [2023-08-30 16:51:55,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806981008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:51:55,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:51:55,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:51:55,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057179807] [2023-08-30 16:51:55,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:51:55,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:51:55,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:51:55,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:51:55,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:51:55,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2023-08-30 16:51:55,828 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 16:51:55,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:51:55,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2023-08-30 16:51:55,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:51:56,781 INFO L130 PetriNetUnfolder]: 8855/12240 cut-off events. [2023-08-30 16:51:56,781 INFO L131 PetriNetUnfolder]: For 208/208 co-relation queries the response was YES. [2023-08-30 16:51:56,794 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 16:51:56,856 INFO L137 encePairwiseOnDemand]: 223/235 looper letters, 42 selfloop transitions, 10 changer transitions 37/90 dead transitions. [2023-08-30 16:51:56,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 90 transitions, 372 flow [2023-08-30 16:51:56,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:51:56,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:51:56,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 799 transitions. [2023-08-30 16:51:56,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2023-08-30 16:51:56,859 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 799 transitions. [2023-08-30 16:51:56,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 799 transitions. [2023-08-30 16:51:56,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:51:56,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 799 transitions. [2023-08-30 16:51:56,861 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 16:51:56,864 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 16:51:56,865 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 16:51:56,865 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 66 flow. Second operand 7 states and 799 transitions. [2023-08-30 16:51:56,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 90 transitions, 372 flow [2023-08-30 16:51:56,869 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 16:51:56,869 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 158 flow [2023-08-30 16:51:56,870 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 16:51:56,870 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-30 16:51:56,870 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 158 flow [2023-08-30 16:51:56,871 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 16:51:56,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:51:56,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:51:56,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:51:56,871 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 16:51:56,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:51:56,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1656233583, now seen corresponding path program 1 times [2023-08-30 16:51:56,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:51:56,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351585711] [2023-08-30 16:51:56,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:51:56,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:51:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:51:57,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:51:57,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:51:57,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351585711] [2023-08-30 16:51:57,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351585711] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:51:57,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:51:57,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:51:57,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91754388] [2023-08-30 16:51:57,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:51:57,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:51:57,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:51:57,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:51:57,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:51:57,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2023-08-30 16:51:57,186 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 16:51:57,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:51:57,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2023-08-30 16:51:57,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:51:58,167 INFO L130 PetriNetUnfolder]: 8758/12261 cut-off events. [2023-08-30 16:51:58,167 INFO L131 PetriNetUnfolder]: For 13258/13272 co-relation queries the response was YES. [2023-08-30 16:51:58,185 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 16:51:58,224 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 53 selfloop transitions, 20 changer transitions 34/108 dead transitions. [2023-08-30 16:51:58,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 108 transitions, 678 flow [2023-08-30 16:51:58,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:51:58,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:51:58,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 810 transitions. [2023-08-30 16:51:58,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49240121580547114 [2023-08-30 16:51:58,227 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 810 transitions. [2023-08-30 16:51:58,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 810 transitions. [2023-08-30 16:51:58,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:51:58,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 810 transitions. [2023-08-30 16:51:58,229 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 16:51:58,232 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 16:51:58,232 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 16:51:58,232 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 158 flow. Second operand 7 states and 810 transitions. [2023-08-30 16:51:58,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 108 transitions, 678 flow [2023-08-30 16:51:58,285 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 16:51:58,286 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 317 flow [2023-08-30 16:51:58,286 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 16:51:58,287 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2023-08-30 16:51:58,287 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 317 flow [2023-08-30 16:51:58,288 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 16:51:58,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:51:58,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:51:58,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:51:58,288 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 16:51:58,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:51:58,289 INFO L85 PathProgramCache]: Analyzing trace with hash -196410352, now seen corresponding path program 1 times [2023-08-30 16:51:58,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:51:58,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595972376] [2023-08-30 16:51:58,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:51:58,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:51:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:51:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:51:58,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:51:58,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595972376] [2023-08-30 16:51:58,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595972376] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:51:58,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:51:58,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:51:58,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615313034] [2023-08-30 16:51:58,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:51:58,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:51:58,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:51:58,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:51:58,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:51:58,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2023-08-30 16:51:58,697 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 16:51:58,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:51:58,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2023-08-30 16:51:58,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:51:59,595 INFO L130 PetriNetUnfolder]: 8315/11888 cut-off events. [2023-08-30 16:51:59,595 INFO L131 PetriNetUnfolder]: For 33695/33695 co-relation queries the response was YES. [2023-08-30 16:51:59,615 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 16:51:59,649 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 62 selfloop transitions, 25 changer transitions 37/125 dead transitions. [2023-08-30 16:51:59,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 125 transitions, 1063 flow [2023-08-30 16:51:59,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:51:59,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:51:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 805 transitions. [2023-08-30 16:51:59,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2023-08-30 16:51:59,652 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 805 transitions. [2023-08-30 16:51:59,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 805 transitions. [2023-08-30 16:51:59,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:51:59,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 805 transitions. [2023-08-30 16:51:59,654 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 16:51:59,656 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 16:51:59,657 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 16:51:59,657 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 317 flow. Second operand 7 states and 805 transitions. [2023-08-30 16:51:59,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 125 transitions, 1063 flow [2023-08-30 16:51:59,769 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 16:51:59,770 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 622 flow [2023-08-30 16:51:59,771 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 16:51:59,771 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2023-08-30 16:51:59,771 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 622 flow [2023-08-30 16:51:59,772 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 16:51:59,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:51:59,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:51:59,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:51:59,772 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 16:51:59,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:51:59,773 INFO L85 PathProgramCache]: Analyzing trace with hash -672716148, now seen corresponding path program 1 times [2023-08-30 16:51:59,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:51:59,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851773911] [2023-08-30 16:51:59,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:51:59,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:51:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:52:00,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:00,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851773911] [2023-08-30 16:52:00,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851773911] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:00,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:00,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:52:00,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912559262] [2023-08-30 16:52:00,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:00,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:52:00,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:00,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:52:00,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:52:00,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2023-08-30 16:52:00,133 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 16:52:00,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:00,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2023-08-30 16:52:00,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:01,343 INFO L130 PetriNetUnfolder]: 10113/14332 cut-off events. [2023-08-30 16:52:01,343 INFO L131 PetriNetUnfolder]: For 62174/62174 co-relation queries the response was YES. [2023-08-30 16:52:01,378 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 16:52:01,420 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 63 selfloop transitions, 41 changer transitions 33/138 dead transitions. [2023-08-30 16:52:01,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 138 transitions, 1396 flow [2023-08-30 16:52:01,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:52:01,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:52:01,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 803 transitions. [2023-08-30 16:52:01,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48814589665653496 [2023-08-30 16:52:01,423 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 803 transitions. [2023-08-30 16:52:01,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 803 transitions. [2023-08-30 16:52:01,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:01,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 803 transitions. [2023-08-30 16:52:01,425 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 16:52:01,427 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 16:52:01,427 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 16:52:01,427 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 622 flow. Second operand 7 states and 803 transitions. [2023-08-30 16:52:01,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 138 transitions, 1396 flow [2023-08-30 16:52:01,535 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 16:52:01,538 INFO L231 Difference]: Finished difference. Result has 70 places, 77 transitions, 971 flow [2023-08-30 16:52:01,538 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 16:52:01,540 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-08-30 16:52:01,540 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 77 transitions, 971 flow [2023-08-30 16:52:01,540 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 16:52:01,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:01,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:52:01,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 16:52:01,541 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 16:52:01,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:01,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2006318020, now seen corresponding path program 1 times [2023-08-30 16:52:01,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:01,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560670796] [2023-08-30 16:52:01,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:01,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:52:02,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:02,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560670796] [2023-08-30 16:52:02,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560670796] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:02,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:02,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:52:02,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166063705] [2023-08-30 16:52:02,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:02,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 16:52:02,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:02,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 16:52:02,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 16:52:02,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 235 [2023-08-30 16:52:02,034 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 16:52:02,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:02,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 235 [2023-08-30 16:52:02,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:03,156 INFO L130 PetriNetUnfolder]: 9622/14180 cut-off events. [2023-08-30 16:52:03,156 INFO L131 PetriNetUnfolder]: For 96937/98364 co-relation queries the response was YES. [2023-08-30 16:52:03,197 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 16:52:03,236 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 92 selfloop transitions, 12 changer transitions 22/147 dead transitions. [2023-08-30 16:52:03,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 147 transitions, 1932 flow [2023-08-30 16:52:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 16:52:03,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 16:52:03,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 729 transitions. [2023-08-30 16:52:03,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170212765957447 [2023-08-30 16:52:03,239 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 729 transitions. [2023-08-30 16:52:03,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 729 transitions. [2023-08-30 16:52:03,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:03,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 729 transitions. [2023-08-30 16:52:03,240 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 16:52:03,242 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 16:52:03,242 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 16:52:03,242 INFO L175 Difference]: Start difference. First operand has 70 places, 77 transitions, 971 flow. Second operand 6 states and 729 transitions. [2023-08-30 16:52:03,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 147 transitions, 1932 flow [2023-08-30 16:52:03,384 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 16:52:03,386 INFO L231 Difference]: Finished difference. Result has 72 places, 85 transitions, 1098 flow [2023-08-30 16:52:03,386 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 16:52:03,388 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2023-08-30 16:52:03,389 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 85 transitions, 1098 flow [2023-08-30 16:52:03,390 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 16:52:03,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:03,391 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 16:52:03,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 16:52:03,391 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 16:52:03,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:03,391 INFO L85 PathProgramCache]: Analyzing trace with hash 271270556, now seen corresponding path program 1 times [2023-08-30 16:52:03,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:03,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258683899] [2023-08-30 16:52:03,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:03,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:03,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:52:03,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:03,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258683899] [2023-08-30 16:52:03,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258683899] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:03,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:03,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 16:52:03,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59493589] [2023-08-30 16:52:03,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:03,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 16:52:03,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:03,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 16:52:03,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 16:52:03,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-08-30 16:52:03,969 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 16:52:03,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:03,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-08-30 16:52:03,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:05,224 INFO L130 PetriNetUnfolder]: 10332/15054 cut-off events. [2023-08-30 16:52:05,225 INFO L131 PetriNetUnfolder]: For 111662/113297 co-relation queries the response was YES. [2023-08-30 16:52:05,260 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 16:52:05,301 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 93 selfloop transitions, 30 changer transitions 13/157 dead transitions. [2023-08-30 16:52:05,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 157 transitions, 2149 flow [2023-08-30 16:52:05,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 16:52:05,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 16:52:05,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 717 transitions. [2023-08-30 16:52:05,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085106382978724 [2023-08-30 16:52:05,303 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 717 transitions. [2023-08-30 16:52:05,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 717 transitions. [2023-08-30 16:52:05,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:05,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 717 transitions. [2023-08-30 16:52:05,305 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 16:52:05,306 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 16:52:05,307 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 16:52:05,307 INFO L175 Difference]: Start difference. First operand has 72 places, 85 transitions, 1098 flow. Second operand 6 states and 717 transitions. [2023-08-30 16:52:05,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 157 transitions, 2149 flow [2023-08-30 16:52:05,421 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 16:52:05,424 INFO L231 Difference]: Finished difference. Result has 76 places, 105 transitions, 1449 flow [2023-08-30 16:52:05,424 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 16:52:05,426 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2023-08-30 16:52:05,427 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 105 transitions, 1449 flow [2023-08-30 16:52:05,427 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 16:52:05,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:05,427 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 16:52:05,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 16:52:05,428 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 16:52:05,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:05,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1653571782, now seen corresponding path program 2 times [2023-08-30 16:52:05,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:05,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361705585] [2023-08-30 16:52:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:05,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:05,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:52:05,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:05,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361705585] [2023-08-30 16:52:05,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361705585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:05,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:05,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 16:52:05,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373652818] [2023-08-30 16:52:05,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:05,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 16:52:05,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:05,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 16:52:05,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 16:52:05,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 235 [2023-08-30 16:52:05,923 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 16:52:05,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:05,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 235 [2023-08-30 16:52:05,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:07,742 INFO L130 PetriNetUnfolder]: 14125/19886 cut-off events. [2023-08-30 16:52:07,742 INFO L131 PetriNetUnfolder]: For 144352/144352 co-relation queries the response was YES. [2023-08-30 16:52:07,783 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 16:52:07,823 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 134 selfloop transitions, 50 changer transitions 61/245 dead transitions. [2023-08-30 16:52:07,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 245 transitions, 3559 flow [2023-08-30 16:52:07,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 16:52:07,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 16:52:07,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 999 transitions. [2023-08-30 16:52:07,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4723404255319149 [2023-08-30 16:52:07,827 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 999 transitions. [2023-08-30 16:52:07,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 999 transitions. [2023-08-30 16:52:07,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:07,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 999 transitions. [2023-08-30 16:52:07,829 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 16:52:07,831 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 16:52:07,831 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 16:52:07,831 INFO L175 Difference]: Start difference. First operand has 76 places, 105 transitions, 1449 flow. Second operand 9 states and 999 transitions. [2023-08-30 16:52:07,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 245 transitions, 3559 flow [2023-08-30 16:52:08,016 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 16:52:08,021 INFO L231 Difference]: Finished difference. Result has 87 places, 123 transitions, 1974 flow [2023-08-30 16:52:08,021 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 16:52:08,023 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2023-08-30 16:52:08,023 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 123 transitions, 1974 flow [2023-08-30 16:52:08,024 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 16:52:08,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:08,024 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 16:52:08,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 16:52:08,024 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 16:52:08,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:08,027 INFO L85 PathProgramCache]: Analyzing trace with hash -175886107, now seen corresponding path program 1 times [2023-08-30 16:52:08,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:08,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691217101] [2023-08-30 16:52:08,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:08,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:08,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:52:08,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:08,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691217101] [2023-08-30 16:52:08,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691217101] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:08,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:08,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 16:52:08,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464623317] [2023-08-30 16:52:08,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:08,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 16:52:08,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:08,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 16:52:08,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 16:52:08,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-08-30 16:52:08,625 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 16:52:08,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:08,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-08-30 16:52:08,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:11,342 INFO L130 PetriNetUnfolder]: 15901/22538 cut-off events. [2023-08-30 16:52:11,343 INFO L131 PetriNetUnfolder]: For 222749/222749 co-relation queries the response was YES. [2023-08-30 16:52:11,429 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 16:52:11,502 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 119 selfloop transitions, 138 changer transitions 49/306 dead transitions. [2023-08-30 16:52:11,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 306 transitions, 4703 flow [2023-08-30 16:52:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 16:52:11,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 16:52:11,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1409 transitions. [2023-08-30 16:52:11,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612111292962357 [2023-08-30 16:52:11,506 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1409 transitions. [2023-08-30 16:52:11,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1409 transitions. [2023-08-30 16:52:11,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:11,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1409 transitions. [2023-08-30 16:52:11,509 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 16:52:11,512 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 16:52:11,513 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 16:52:11,513 INFO L175 Difference]: Start difference. First operand has 87 places, 123 transitions, 1974 flow. Second operand 13 states and 1409 transitions. [2023-08-30 16:52:11,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 306 transitions, 4703 flow [2023-08-30 16:52:12,791 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 16:52:12,795 INFO L231 Difference]: Finished difference. Result has 101 places, 190 transitions, 3636 flow [2023-08-30 16:52:12,795 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 16:52:12,795 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2023-08-30 16:52:12,796 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 190 transitions, 3636 flow [2023-08-30 16:52:12,796 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 16:52:12,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:12,796 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 16:52:12,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 16:52:12,796 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 16:52:12,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:12,797 INFO L85 PathProgramCache]: Analyzing trace with hash 963103137, now seen corresponding path program 2 times [2023-08-30 16:52:12,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:12,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623202902] [2023-08-30 16:52:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:12,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:52:13,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:13,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623202902] [2023-08-30 16:52:13,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623202902] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:13,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:13,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 16:52:13,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142678630] [2023-08-30 16:52:13,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:13,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 16:52:13,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:13,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 16:52:13,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 16:52:13,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 235 [2023-08-30 16:52:13,657 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 16:52:13,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:13,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 235 [2023-08-30 16:52:13,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:15,812 INFO L130 PetriNetUnfolder]: 13960/20149 cut-off events. [2023-08-30 16:52:15,812 INFO L131 PetriNetUnfolder]: For 259946/261243 co-relation queries the response was YES. [2023-08-30 16:52:15,889 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 16:52:15,950 INFO L137 encePairwiseOnDemand]: 224/235 looper letters, 157 selfloop transitions, 51 changer transitions 22/280 dead transitions. [2023-08-30 16:52:15,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 280 transitions, 5315 flow [2023-08-30 16:52:15,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 16:52:15,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 16:52:15,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 912 transitions. [2023-08-30 16:52:15,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2023-08-30 16:52:15,952 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 912 transitions. [2023-08-30 16:52:15,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 912 transitions. [2023-08-30 16:52:15,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:15,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 912 transitions. [2023-08-30 16:52:15,954 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 16:52:15,956 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 16:52:15,957 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 16:52:15,957 INFO L175 Difference]: Start difference. First operand has 101 places, 190 transitions, 3636 flow. Second operand 8 states and 912 transitions. [2023-08-30 16:52:15,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 280 transitions, 5315 flow [2023-08-30 16:52:17,671 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 16:52:17,678 INFO L231 Difference]: Finished difference. Result has 101 places, 216 transitions, 4119 flow [2023-08-30 16:52:17,678 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 16:52:17,679 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2023-08-30 16:52:17,679 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 216 transitions, 4119 flow [2023-08-30 16:52:17,679 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 16:52:17,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:17,680 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 16:52:17,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 16:52:17,680 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 16:52:17,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:17,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1600301353, now seen corresponding path program 3 times [2023-08-30 16:52:17,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:17,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800255389] [2023-08-30 16:52:17,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:17,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:52:18,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:18,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800255389] [2023-08-30 16:52:18,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800255389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:18,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:18,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 16:52:18,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532388129] [2023-08-30 16:52:18,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:18,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 16:52:18,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:18,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 16:52:18,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 16:52:18,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 235 [2023-08-30 16:52:18,427 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 16:52:18,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:18,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 235 [2023-08-30 16:52:18,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:21,156 INFO L130 PetriNetUnfolder]: 16674/23787 cut-off events. [2023-08-30 16:52:21,156 INFO L131 PetriNetUnfolder]: For 297773/297773 co-relation queries the response was YES. [2023-08-30 16:52:21,221 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 16:52:21,281 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 168 selfloop transitions, 143 changer transitions 48/359 dead transitions. [2023-08-30 16:52:21,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 359 transitions, 6727 flow [2023-08-30 16:52:21,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 16:52:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 16:52:21,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1094 transitions. [2023-08-30 16:52:21,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465531914893617 [2023-08-30 16:52:21,284 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1094 transitions. [2023-08-30 16:52:21,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1094 transitions. [2023-08-30 16:52:21,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:21,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1094 transitions. [2023-08-30 16:52:21,286 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 16:52:21,288 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 16:52:21,288 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 16:52:21,288 INFO L175 Difference]: Start difference. First operand has 101 places, 216 transitions, 4119 flow. Second operand 10 states and 1094 transitions. [2023-08-30 16:52:21,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 359 transitions, 6727 flow [2023-08-30 16:52:22,743 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 16:52:22,747 INFO L231 Difference]: Finished difference. Result has 112 places, 263 transitions, 5526 flow [2023-08-30 16:52:22,748 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 16:52:22,748 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 70 predicate places. [2023-08-30 16:52:22,748 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 263 transitions, 5526 flow [2023-08-30 16:52:22,748 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 16:52:22,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:22,748 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 16:52:22,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 16:52:22,749 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 16:52:22,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:22,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2031542937, now seen corresponding path program 4 times [2023-08-30 16:52:22,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:22,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320190319] [2023-08-30 16:52:22,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:22,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:23,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:52:23,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:23,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320190319] [2023-08-30 16:52:23,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320190319] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:23,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:23,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 16:52:23,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065286221] [2023-08-30 16:52:23,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:23,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 16:52:23,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:23,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 16:52:23,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 16:52:23,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-08-30 16:52:23,324 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 16:52:23,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:23,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-08-30 16:52:23,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:26,022 INFO L130 PetriNetUnfolder]: 14187/21191 cut-off events. [2023-08-30 16:52:26,022 INFO L131 PetriNetUnfolder]: For 344433/346863 co-relation queries the response was YES. [2023-08-30 16:52:26,100 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 16:52:26,160 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 199 selfloop transitions, 23 changer transitions 24/319 dead transitions. [2023-08-30 16:52:26,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 319 transitions, 6855 flow [2023-08-30 16:52:26,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:52:26,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:52:26,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 826 transitions. [2023-08-30 16:52:26,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2023-08-30 16:52:26,162 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 826 transitions. [2023-08-30 16:52:26,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 826 transitions. [2023-08-30 16:52:26,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:26,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 826 transitions. [2023-08-30 16:52:26,164 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 16:52:26,165 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 16:52:26,165 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 16:52:26,165 INFO L175 Difference]: Start difference. First operand has 112 places, 263 transitions, 5526 flow. Second operand 7 states and 826 transitions. [2023-08-30 16:52:26,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 319 transitions, 6855 flow [2023-08-30 16:52:27,808 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 16:52:27,812 INFO L231 Difference]: Finished difference. Result has 115 places, 263 transitions, 5511 flow [2023-08-30 16:52:27,812 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 16:52:27,813 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 73 predicate places. [2023-08-30 16:52:27,813 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 263 transitions, 5511 flow [2023-08-30 16:52:27,813 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 16:52:27,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:27,814 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 16:52:27,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 16:52:27,814 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 16:52:27,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:27,815 INFO L85 PathProgramCache]: Analyzing trace with hash 886799159, now seen corresponding path program 1 times [2023-08-30 16:52:27,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:27,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085518268] [2023-08-30 16:52:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:27,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:27,947 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 16:52:27,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:27,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085518268] [2023-08-30 16:52:27,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085518268] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:27,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:27,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:52:27,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146422359] [2023-08-30 16:52:27,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:27,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:52:27,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:27,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:52:27,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:52:27,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-08-30 16:52:27,956 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 16:52:27,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:27,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-08-30 16:52:27,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:30,260 INFO L130 PetriNetUnfolder]: 10864/16522 cut-off events. [2023-08-30 16:52:30,261 INFO L131 PetriNetUnfolder]: For 452829/462901 co-relation queries the response was YES. [2023-08-30 16:52:30,329 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 16:52:30,387 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 375 selfloop transitions, 10 changer transitions 74/529 dead transitions. [2023-08-30 16:52:30,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 529 transitions, 12169 flow [2023-08-30 16:52:30,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:52:30,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:52:30,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 615 transitions. [2023-08-30 16:52:30,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2023-08-30 16:52:30,389 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 615 transitions. [2023-08-30 16:52:30,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 615 transitions. [2023-08-30 16:52:30,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:30,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 615 transitions. [2023-08-30 16:52:30,390 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 16:52:30,391 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 16:52:30,391 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 16:52:30,391 INFO L175 Difference]: Start difference. First operand has 115 places, 263 transitions, 5511 flow. Second operand 5 states and 615 transitions. [2023-08-30 16:52:30,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 529 transitions, 12169 flow [2023-08-30 16:52:31,014 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 16:52:31,019 INFO L231 Difference]: Finished difference. Result has 114 places, 254 transitions, 5285 flow [2023-08-30 16:52:31,020 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 16:52:31,020 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2023-08-30 16:52:31,020 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 254 transitions, 5285 flow [2023-08-30 16:52:31,020 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 16:52:31,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:31,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:52:31,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 16:52:31,021 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 16:52:31,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:31,021 INFO L85 PathProgramCache]: Analyzing trace with hash -597741335, now seen corresponding path program 1 times [2023-08-30 16:52:31,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:31,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288630510] [2023-08-30 16:52:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:31,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:31,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:52:31,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:31,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288630510] [2023-08-30 16:52:31,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288630510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:31,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:31,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:52:31,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604011897] [2023-08-30 16:52:31,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:31,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:52:31,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:31,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:52:31,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:52:31,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-08-30 16:52:31,142 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 16:52:31,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:31,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-08-30 16:52:31,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:32,938 INFO L130 PetriNetUnfolder]: 8408/13257 cut-off events. [2023-08-30 16:52:32,939 INFO L131 PetriNetUnfolder]: For 392495/402003 co-relation queries the response was YES. [2023-08-30 16:52:32,985 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 16:52:33,015 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 422 selfloop transitions, 18 changer transitions 137/635 dead transitions. [2023-08-30 16:52:33,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 635 transitions, 14742 flow [2023-08-30 16:52:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:52:33,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:52:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 862 transitions. [2023-08-30 16:52:33,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5240121580547112 [2023-08-30 16:52:33,017 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 862 transitions. [2023-08-30 16:52:33,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 862 transitions. [2023-08-30 16:52:33,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:33,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 862 transitions. [2023-08-30 16:52:33,019 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 16:52:33,021 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 16:52:33,021 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 16:52:33,021 INFO L175 Difference]: Start difference. First operand has 114 places, 254 transitions, 5285 flow. Second operand 7 states and 862 transitions. [2023-08-30 16:52:33,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 635 transitions, 14742 flow [2023-08-30 16:52:33,308 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 16:52:33,314 INFO L231 Difference]: Finished difference. Result has 120 places, 221 transitions, 4449 flow [2023-08-30 16:52:33,314 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 16:52:33,314 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 78 predicate places. [2023-08-30 16:52:33,315 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 221 transitions, 4449 flow [2023-08-30 16:52:33,315 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 16:52:33,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:33,315 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 16:52:33,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 16:52:33,315 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 16:52:33,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:33,315 INFO L85 PathProgramCache]: Analyzing trace with hash -989767449, now seen corresponding path program 1 times [2023-08-30 16:52:33,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:33,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492607302] [2023-08-30 16:52:33,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:33,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:33,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:52:33,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:33,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492607302] [2023-08-30 16:52:33,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492607302] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:33,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:33,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:52:33,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543831094] [2023-08-30 16:52:33,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:33,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:52:33,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:33,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:52:33,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:52:33,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2023-08-30 16:52:33,574 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 16:52:33,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:33,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2023-08-30 16:52:33,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:36,411 INFO L130 PetriNetUnfolder]: 12878/20515 cut-off events. [2023-08-30 16:52:36,412 INFO L131 PetriNetUnfolder]: For 379738/380508 co-relation queries the response was YES. [2023-08-30 16:52:36,494 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 16:52:36,525 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 175 selfloop transitions, 60 changer transitions 125/364 dead transitions. [2023-08-30 16:52:36,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 364 transitions, 7258 flow [2023-08-30 16:52:36,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:52:36,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:52:36,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 796 transitions. [2023-08-30 16:52:36,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838905775075988 [2023-08-30 16:52:36,528 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 796 transitions. [2023-08-30 16:52:36,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 796 transitions. [2023-08-30 16:52:36,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:36,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 796 transitions. [2023-08-30 16:52:36,529 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 16:52:36,531 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 16:52:36,531 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 16:52:36,531 INFO L175 Difference]: Start difference. First operand has 120 places, 221 transitions, 4449 flow. Second operand 7 states and 796 transitions. [2023-08-30 16:52:36,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 364 transitions, 7258 flow [2023-08-30 16:52:38,342 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 16:52:38,345 INFO L231 Difference]: Finished difference. Result has 126 places, 178 transitions, 3681 flow [2023-08-30 16:52:38,346 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 16:52:38,346 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 84 predicate places. [2023-08-30 16:52:38,346 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 178 transitions, 3681 flow [2023-08-30 16:52:38,346 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 16:52:38,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:38,346 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 16:52:38,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 16:52:38,346 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 16:52:38,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:38,347 INFO L85 PathProgramCache]: Analyzing trace with hash -706237089, now seen corresponding path program 1 times [2023-08-30 16:52:38,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:38,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94514396] [2023-08-30 16:52:38,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:38,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:52:38,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:38,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94514396] [2023-08-30 16:52:38,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94514396] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:38,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:38,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 16:52:38,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051062974] [2023-08-30 16:52:38,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:38,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 16:52:38,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:38,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 16:52:38,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 16:52:38,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-08-30 16:52:38,552 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 16:52:38,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:38,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-08-30 16:52:38,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:39,530 INFO L130 PetriNetUnfolder]: 4020/6746 cut-off events. [2023-08-30 16:52:39,530 INFO L131 PetriNetUnfolder]: For 178139/181295 co-relation queries the response was YES. [2023-08-30 16:52:39,550 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 16:52:39,561 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 308 selfloop transitions, 19 changer transitions 210/571 dead transitions. [2023-08-30 16:52:39,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 571 transitions, 13186 flow [2023-08-30 16:52:39,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 16:52:39,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 16:52:39,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1099 transitions. [2023-08-30 16:52:39,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196217494089834 [2023-08-30 16:52:39,563 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1099 transitions. [2023-08-30 16:52:39,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1099 transitions. [2023-08-30 16:52:39,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:39,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1099 transitions. [2023-08-30 16:52:39,565 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 16:52:39,567 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 16:52:39,567 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 16:52:39,567 INFO L175 Difference]: Start difference. First operand has 126 places, 178 transitions, 3681 flow. Second operand 9 states and 1099 transitions. [2023-08-30 16:52:39,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 571 transitions, 13186 flow [2023-08-30 16:52:39,754 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 16:52:39,759 INFO L231 Difference]: Finished difference. Result has 118 places, 150 transitions, 2705 flow [2023-08-30 16:52:39,759 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 16:52:39,759 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 76 predicate places. [2023-08-30 16:52:39,759 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 150 transitions, 2705 flow [2023-08-30 16:52:39,760 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 16:52:39,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:39,760 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 16:52:39,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 16:52:39,760 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 16:52:39,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:39,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2136738546, now seen corresponding path program 1 times [2023-08-30 16:52:39,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:39,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260166676] [2023-08-30 16:52:39,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:39,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:39,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:52:39,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:39,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260166676] [2023-08-30 16:52:39,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260166676] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:39,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:39,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 16:52:39,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964984745] [2023-08-30 16:52:39,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:39,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 16:52:39,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:39,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 16:52:39,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 16:52:40,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 235 [2023-08-30 16:52:40,030 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 16:52:40,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:40,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 235 [2023-08-30 16:52:40,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:41,328 INFO L130 PetriNetUnfolder]: 5893/10325 cut-off events. [2023-08-30 16:52:41,328 INFO L131 PetriNetUnfolder]: For 165376/165568 co-relation queries the response was YES. [2023-08-30 16:52:41,365 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 16:52:41,376 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 104 selfloop transitions, 47 changer transitions 195/349 dead transitions. [2023-08-30 16:52:41,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 349 transitions, 6392 flow [2023-08-30 16:52:41,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:52:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:52:41,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 796 transitions. [2023-08-30 16:52:41,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838905775075988 [2023-08-30 16:52:41,378 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 796 transitions. [2023-08-30 16:52:41,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 796 transitions. [2023-08-30 16:52:41,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:41,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 796 transitions. [2023-08-30 16:52:41,379 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 16:52:41,380 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 16:52:41,381 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 16:52:41,381 INFO L175 Difference]: Start difference. First operand has 118 places, 150 transitions, 2705 flow. Second operand 7 states and 796 transitions. [2023-08-30 16:52:41,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 349 transitions, 6392 flow [2023-08-30 16:52:42,268 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 16:52:42,271 INFO L231 Difference]: Finished difference. Result has 123 places, 107 transitions, 1951 flow [2023-08-30 16:52:42,271 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 16:52:42,271 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 81 predicate places. [2023-08-30 16:52:42,272 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 107 transitions, 1951 flow [2023-08-30 16:52:42,272 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 16:52:42,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:42,272 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 16:52:42,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 16:52:42,272 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 16:52:42,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1212472198, now seen corresponding path program 2 times [2023-08-30 16:52:42,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:42,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73274126] [2023-08-30 16:52:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:42,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:52:42,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:42,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73274126] [2023-08-30 16:52:42,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73274126] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:42,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:42,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 16:52:42,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734074437] [2023-08-30 16:52:42,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:42,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 16:52:42,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:42,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 16:52:42,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 16:52:42,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-08-30 16:52:42,408 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 16:52:42,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:42,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-08-30 16:52:42,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:42,693 INFO L130 PetriNetUnfolder]: 1239/2238 cut-off events. [2023-08-30 16:52:42,693 INFO L131 PetriNetUnfolder]: For 37782/38003 co-relation queries the response was YES. [2023-08-30 16:52:42,700 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 16:52:42,702 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 33 selfloop transitions, 17 changer transitions 164/218 dead transitions. [2023-08-30 16:52:42,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 218 transitions, 4516 flow [2023-08-30 16:52:42,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 16:52:42,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 16:52:42,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 952 transitions. [2023-08-30 16:52:42,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063829787234042 [2023-08-30 16:52:42,704 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 952 transitions. [2023-08-30 16:52:42,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 952 transitions. [2023-08-30 16:52:42,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:42,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 952 transitions. [2023-08-30 16:52:42,705 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 16:52:42,706 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 16:52:42,707 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 16:52:42,707 INFO L175 Difference]: Start difference. First operand has 123 places, 107 transitions, 1951 flow. Second operand 8 states and 952 transitions. [2023-08-30 16:52:42,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 218 transitions, 4516 flow [2023-08-30 16:52:42,755 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 16:52:42,757 INFO L231 Difference]: Finished difference. Result has 117 places, 41 transitions, 454 flow [2023-08-30 16:52:42,757 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 16:52:42,757 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 75 predicate places. [2023-08-30 16:52:42,757 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 41 transitions, 454 flow [2023-08-30 16:52:42,758 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 16:52:42,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:42,758 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 16:52:42,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 16:52:42,758 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 16:52:42,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:42,758 INFO L85 PathProgramCache]: Analyzing trace with hash -811174431, now seen corresponding path program 1 times [2023-08-30 16:52:42,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:42,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093387385] [2023-08-30 16:52:42,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:42,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 16:52:42,777 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 16:52:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 16:52:42,812 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 16:52:42,812 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 16:52:42,813 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-30 16:52:42,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-30 16:52:42,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-30 16:52:42,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-30 16:52:42,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-30 16:52:42,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-30 16:52:42,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-30 16:52:42,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 16:52:42,815 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:52:42,819 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:52:42,819 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:52:42,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:52:42 BasicIcfg [2023-08-30 16:52:42,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:52:42,861 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:52:42,861 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:52:42,861 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:52:42,861 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:51:51" (3/4) ... [2023-08-30 16:52:42,863 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 16:52:42,909 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:52:42,911 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:52:42,911 INFO L158 Benchmark]: Toolchain (without parser) took 52947.85ms. Allocated memory was 86.0MB in the beginning and 8.1GB in the end (delta: 8.0GB). Free memory was 61.9MB in the beginning and 5.9GB in the end (delta: -5.9GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2023-08-30 16:52:42,911 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 62.9MB. Free memory is still 40.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:52:42,911 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.90ms. Allocated memory is still 86.0MB. Free memory was 61.9MB in the beginning and 60.1MB in the end (delta: 1.8MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2023-08-30 16:52:42,912 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.58ms. Allocated memory is still 86.0MB. Free memory was 60.1MB in the beginning and 57.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 16:52:42,912 INFO L158 Benchmark]: Boogie Preprocessor took 44.02ms. Allocated memory is still 86.0MB. Free memory was 57.3MB in the beginning and 55.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:52:42,912 INFO L158 Benchmark]: RCFGBuilder took 543.28ms. Allocated memory is still 86.0MB. Free memory was 55.2MB in the beginning and 46.7MB in the end (delta: 8.5MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2023-08-30 16:52:42,912 INFO L158 Benchmark]: TraceAbstraction took 51854.54ms. Allocated memory was 86.0MB in the beginning and 8.1GB in the end (delta: 8.0GB). Free memory was 45.9MB in the beginning and 6.0GB in the end (delta: -5.9GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2023-08-30 16:52:42,912 INFO L158 Benchmark]: Witness Printer took 49.78ms. Allocated memory is still 8.1GB. Free memory was 6.0GB in the beginning and 5.9GB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 16:52:42,914 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 62.9MB. Free memory is still 40.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.90ms. Allocated memory is still 86.0MB. Free memory was 61.9MB in the beginning and 60.1MB in the end (delta: 1.8MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.58ms. Allocated memory is still 86.0MB. Free memory was 60.1MB in the beginning and 57.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.02ms. Allocated memory is still 86.0MB. Free memory was 57.3MB in the beginning and 55.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 543.28ms. Allocated memory is still 86.0MB. Free memory was 55.2MB in the beginning and 46.7MB in the end (delta: 8.5MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * TraceAbstraction took 51854.54ms. Allocated memory was 86.0MB in the beginning and 8.1GB in the end (delta: 8.0GB). Free memory was 45.9MB in the beginning and 6.0GB in the end (delta: -5.9GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. * Witness Printer took 49.78ms. Allocated memory is still 8.1GB. Free memory was 6.0GB in the beginning and 5.9GB in the end (delta: 14.7MB). 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: 3.1s, 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: 51.7s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 41.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1595 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1311 mSDsluCounter, 1373 SdHoareTripleChecker+Invalid, 2.7s 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, 1.9s 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: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.3s 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 16:52:42,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE