./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.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/safe016_pso.oepc_pso.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 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 --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 16:56:48,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:56:48,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:56:48,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:56:48,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:56:48,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:56:48,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:56:48,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:56:48,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:56:48,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:56:48,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:56:48,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:56:48,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:56:48,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:56:48,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:56:48,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:56:48,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:56:48,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:56:48,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:56:48,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:56:48,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:56:48,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:56:49,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:56:49,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:56:49,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:56:49,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:56:49,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:56:49,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:56:49,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:56:49,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:56:49,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:56:49,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:56:49,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:56:49,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:56:49,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:56:49,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:56:49,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:56:49,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:56:49,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:56:49,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:56:49,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:56:49,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:56:49,057 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:56:49,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:56:49,058 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:56:49,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:56:49,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:56:49,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:56:49,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:56:49,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:56:49,061 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:56:49,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:56:49,062 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:56:49,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:56:49,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:56:49,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:56:49,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:56:49,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:56:49,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:56:49,063 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:56:49,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:56:49,063 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:56:49,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:56:49,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:56:49,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:56:49,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:56:49,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:56:49,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:56:49,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:56:49,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:56:49,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:56:49,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:56:49,065 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:56:49,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:56:49,066 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:56:49,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:56:49,066 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:56:49,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:56:49,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:56:49,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:56:49,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:56:49,394 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:56:49,394 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:56:49,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-30 16:56:50,639 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:56:50,857 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:56:50,857 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-30 16:56:50,870 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2709de1dc/07bcd55ade5a459d941fe5838fc8619a/FLAG80b34b9d9 [2023-08-30 16:56:50,882 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2709de1dc/07bcd55ade5a459d941fe5838fc8619a [2023-08-30 16:56:50,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:56:50,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:56:50,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:56:50,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:56:50,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:56:50,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:56:50" (1/1) ... [2023-08-30 16:56:50,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a62f0aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:50, skipping insertion in model container [2023-08-30 16:56:50,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:56:50" (1/1) ... [2023-08-30 16:56:50,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:56:50,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:56:51,126 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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-30 16:56:51,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:56:51,313 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:56:51,323 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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-30 16:56:51,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:56:51,400 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:56:51,400 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:56:51,406 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:56:51,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:51 WrapperNode [2023-08-30 16:56:51,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:56:51,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:56:51,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:56:51,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:56:51,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:51" (1/1) ... [2023-08-30 16:56:51,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:51" (1/1) ... [2023-08-30 16:56:51,476 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2023-08-30 16:56:51,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:56:51,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:56:51,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:56:51,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:56:51,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:51" (1/1) ... [2023-08-30 16:56:51,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:51" (1/1) ... [2023-08-30 16:56:51,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:51" (1/1) ... [2023-08-30 16:56:51,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:51" (1/1) ... [2023-08-30 16:56:51,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:51" (1/1) ... [2023-08-30 16:56:51,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:51" (1/1) ... [2023-08-30 16:56:51,516 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:51" (1/1) ... [2023-08-30 16:56:51,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:51" (1/1) ... [2023-08-30 16:56:51,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:56:51,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:56:51,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:56:51,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:56:51,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:51" (1/1) ... [2023-08-30 16:56:51,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:56:51,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:56:51,557 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 16:56:51,575 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 16:56:51,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:56:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:56:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:56:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:56:51,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:56:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 16:56:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 16:56:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 16:56:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 16:56:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 16:56:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 16:56:51,598 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-30 16:56:51,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-30 16:56:51,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:56:51,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:56:51,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:56:51,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:56:51,599 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 16:56:51,700 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:56:51,702 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:56:51,885 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:56:51,891 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:56:51,892 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:56:51,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:56:51 BoogieIcfgContainer [2023-08-30 16:56:51,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:56:51,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:56:51,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:56:51,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:56:51,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:56:50" (1/3) ... [2023-08-30 16:56:51,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a84f725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:56:51, skipping insertion in model container [2023-08-30 16:56:51,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:56:51" (2/3) ... [2023-08-30 16:56:51,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a84f725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:56:51, skipping insertion in model container [2023-08-30 16:56:51,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:56:51" (3/3) ... [2023-08-30 16:56:51,900 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-30 16:56:51,907 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:56:51,927 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:56:51,928 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 16:56:51,928 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:56:52,007 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 16:56:52,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 98 transitions, 216 flow [2023-08-30 16:56:52,079 INFO L130 PetriNetUnfolder]: 2/94 cut-off events. [2023-08-30 16:56:52,079 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:56:52,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 94 events. 2/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-08-30 16:56:52,084 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 98 transitions, 216 flow [2023-08-30 16:56:52,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 80 transitions, 172 flow [2023-08-30 16:56:52,095 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:56:52,107 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 80 transitions, 172 flow [2023-08-30 16:56:52,113 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 80 transitions, 172 flow [2023-08-30 16:56:52,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 80 transitions, 172 flow [2023-08-30 16:56:52,165 INFO L130 PetriNetUnfolder]: 1/80 cut-off events. [2023-08-30 16:56:52,166 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:56:52,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 80 events. 1/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 43 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-08-30 16:56:52,169 INFO L119 LiptonReduction]: Number of co-enabled transitions 1542 [2023-08-30 16:56:54,152 INFO L134 LiptonReduction]: Checked pairs total: 2424 [2023-08-30 16:56:54,153 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-08-30 16:56:54,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:56:54,181 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;@423594d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:56:54,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-30 16:56:54,187 INFO L130 PetriNetUnfolder]: 0/19 cut-off events. [2023-08-30 16:56:54,187 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:56:54,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:56:54,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:56:54,189 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:56:54,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:56:54,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1184454526, now seen corresponding path program 1 times [2023-08-30 16:56:54,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:56:54,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651992416] [2023-08-30 16:56:54,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:56:54,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:56:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:56:54,824 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 16:56:54,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:56:54,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651992416] [2023-08-30 16:56:54,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651992416] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:56:54,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:56:54,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:56:54,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465143316] [2023-08-30 16:56:54,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:56:54,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:56:54,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:56:54,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:56:54,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:56:54,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 162 [2023-08-30 16:56:54,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 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 16:56:54,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:56:54,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 162 [2023-08-30 16:56:54,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:56:55,205 INFO L130 PetriNetUnfolder]: 2019/2943 cut-off events. [2023-08-30 16:56:55,206 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-08-30 16:56:55,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6086 conditions, 2943 events. 2019/2943 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 13535 event pairs, 796 based on Foata normal form. 109/3052 useless extension candidates. Maximal degree in co-relation 6074. Up to 1819 conditions per place. [2023-08-30 16:56:55,221 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 30 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2023-08-30 16:56:55,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 169 flow [2023-08-30 16:56:55,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:56:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:56:55,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2023-08-30 16:56:55,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5781893004115226 [2023-08-30 16:56:55,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2023-08-30 16:56:55,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2023-08-30 16:56:55,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:56:55,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2023-08-30 16:56:55,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 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 16:56:55,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 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 16:56:55,244 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 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 16:56:55,245 INFO L175 Difference]: Start difference. First operand has 33 places, 20 transitions, 52 flow. Second operand 3 states and 281 transitions. [2023-08-30 16:56:55,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 169 flow [2023-08-30 16:56:55,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 162 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 16:56:55,251 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 102 flow [2023-08-30 16:56:55,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-08-30 16:56:55,255 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-08-30 16:56:55,256 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 102 flow [2023-08-30 16:56:55,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 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 16:56:55,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:56:55,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:56:55,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:56:55,257 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:56:55,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:56:55,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1936616182, now seen corresponding path program 1 times [2023-08-30 16:56:55,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:56:55,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782257114] [2023-08-30 16:56:55,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:56:55,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:56:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:56:55,474 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 16:56:55,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:56:55,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782257114] [2023-08-30 16:56:55,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782257114] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:56:55,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:56:55,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:56:55,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280777864] [2023-08-30 16:56:55,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:56:55,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:56:55,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:56:55,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:56:55,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:56:55,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 162 [2023-08-30 16:56:55,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:56:55,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:56:55,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 162 [2023-08-30 16:56:55,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:56:55,751 INFO L130 PetriNetUnfolder]: 1886/2759 cut-off events. [2023-08-30 16:56:55,751 INFO L131 PetriNetUnfolder]: For 1170/1170 co-relation queries the response was YES. [2023-08-30 16:56:55,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7639 conditions, 2759 events. 1886/2759 cut-off events. For 1170/1170 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12651 event pairs, 269 based on Foata normal form. 33/2792 useless extension candidates. Maximal degree in co-relation 7627. Up to 1394 conditions per place. [2023-08-30 16:56:55,765 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 38 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2023-08-30 16:56:55,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 260 flow [2023-08-30 16:56:55,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:56:55,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:56:55,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2023-08-30 16:56:55,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.566358024691358 [2023-08-30 16:56:55,770 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2023-08-30 16:56:55,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2023-08-30 16:56:55,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:56:55,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2023-08-30 16:56:55,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 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 16:56:55,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 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 16:56:55,774 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 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 16:56:55,774 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 102 flow. Second operand 4 states and 367 transitions. [2023-08-30 16:56:55,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 260 flow [2023-08-30 16:56:55,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:56:55,781 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 146 flow [2023-08-30 16:56:55,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-08-30 16:56:55,782 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-30 16:56:55,782 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 146 flow [2023-08-30 16:56:55,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:56:55,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:56:55,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:56:55,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:56:55,784 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:56:55,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:56:55,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1936616027, now seen corresponding path program 1 times [2023-08-30 16:56:55,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:56:55,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870357741] [2023-08-30 16:56:55,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:56:55,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:56:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:56:55,923 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 16:56:55,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:56:55,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870357741] [2023-08-30 16:56:55,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870357741] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:56:55,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:56:55,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:56:55,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584107144] [2023-08-30 16:56:55,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:56:55,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:56:55,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:56:55,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:56:55,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:56:55,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 162 [2023-08-30 16:56:55,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:56:55,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:56:55,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 162 [2023-08-30 16:56:55,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:56:56,187 INFO L130 PetriNetUnfolder]: 1806/2649 cut-off events. [2023-08-30 16:56:56,188 INFO L131 PetriNetUnfolder]: For 2734/2734 co-relation queries the response was YES. [2023-08-30 16:56:56,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8051 conditions, 2649 events. 1806/2649 cut-off events. For 2734/2734 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11781 event pairs, 251 based on Foata normal form. 12/2661 useless extension candidates. Maximal degree in co-relation 8036. Up to 1306 conditions per place. [2023-08-30 16:56:56,202 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 40 selfloop transitions, 14 changer transitions 0/54 dead transitions. [2023-08-30 16:56:56,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 54 transitions, 358 flow [2023-08-30 16:56:56,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:56:56,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:56:56,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2023-08-30 16:56:56,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2023-08-30 16:56:56,204 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 369 transitions. [2023-08-30 16:56:56,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 369 transitions. [2023-08-30 16:56:56,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:56:56,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 369 transitions. [2023-08-30 16:56:56,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 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 16:56:56,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 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 16:56:56,209 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 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 16:56:56,209 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 146 flow. Second operand 4 states and 369 transitions. [2023-08-30 16:56:56,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 54 transitions, 358 flow [2023-08-30 16:56:56,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 353 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:56:56,216 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 274 flow [2023-08-30 16:56:56,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=274, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-08-30 16:56:56,218 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-08-30 16:56:56,220 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 274 flow [2023-08-30 16:56:56,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:56:56,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:56:56,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:56:56,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:56:56,222 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:56:56,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:56:56,222 INFO L85 PathProgramCache]: Analyzing trace with hash -481665748, now seen corresponding path program 1 times [2023-08-30 16:56:56,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:56:56,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104885548] [2023-08-30 16:56:56,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:56:56,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:56:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:56:56,343 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 16:56:56,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:56:56,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104885548] [2023-08-30 16:56:56,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104885548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:56:56,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:56:56,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:56:56,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390996873] [2023-08-30 16:56:56,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:56:56,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:56:56,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:56:56,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:56:56,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:56:56,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 162 [2023-08-30 16:56:56,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 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 16:56:56,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:56:56,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 162 [2023-08-30 16:56:56,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:56:56,571 INFO L130 PetriNetUnfolder]: 1401/2161 cut-off events. [2023-08-30 16:56:56,572 INFO L131 PetriNetUnfolder]: For 4541/4592 co-relation queries the response was YES. [2023-08-30 16:56:56,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7517 conditions, 2161 events. 1401/2161 cut-off events. For 4541/4592 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10627 event pairs, 665 based on Foata normal form. 61/2153 useless extension candidates. Maximal degree in co-relation 7498. Up to 1660 conditions per place. [2023-08-30 16:56:56,588 INFO L137 encePairwiseOnDemand]: 159/162 looper letters, 45 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2023-08-30 16:56:56,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 58 transitions, 474 flow [2023-08-30 16:56:56,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:56:56,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:56:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2023-08-30 16:56:56,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6152263374485597 [2023-08-30 16:56:56,590 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2023-08-30 16:56:56,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2023-08-30 16:56:56,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:56:56,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2023-08-30 16:56:56,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 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 16:56:56,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 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 16:56:56,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 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 16:56:56,593 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 274 flow. Second operand 3 states and 299 transitions. [2023-08-30 16:56:56,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 58 transitions, 474 flow [2023-08-30 16:56:56,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:56:56,605 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 288 flow [2023-08-30 16:56:56,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-30 16:56:56,606 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2023-08-30 16:56:56,606 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 288 flow [2023-08-30 16:56:56,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 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 16:56:56,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:56:56,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:56:56,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:56:56,608 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:56:56,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:56:56,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1367333638, now seen corresponding path program 1 times [2023-08-30 16:56:56,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:56:56,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928741718] [2023-08-30 16:56:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:56:56,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:56:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:56:56,734 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 16:56:56,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:56:56,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928741718] [2023-08-30 16:56:56,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928741718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:56:56,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:56:56,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:56:56,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597465877] [2023-08-30 16:56:56,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:56:56,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:56:56,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:56:56,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:56:56,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:56:56,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 162 [2023-08-30 16:56:56,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 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 16:56:56,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:56:56,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 162 [2023-08-30 16:56:56,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:56:57,001 INFO L130 PetriNetUnfolder]: 1673/2462 cut-off events. [2023-08-30 16:56:57,002 INFO L131 PetriNetUnfolder]: For 5691/5691 co-relation queries the response was YES. [2023-08-30 16:56:57,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9020 conditions, 2462 events. 1673/2462 cut-off events. For 5691/5691 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11107 event pairs, 269 based on Foata normal form. 8/2470 useless extension candidates. Maximal degree in co-relation 8998. Up to 1319 conditions per place. [2023-08-30 16:56:57,017 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 50 selfloop transitions, 25 changer transitions 0/75 dead transitions. [2023-08-30 16:56:57,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 75 transitions, 650 flow [2023-08-30 16:56:57,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:56:57,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:56:57,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2023-08-30 16:56:57,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2023-08-30 16:56:57,020 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2023-08-30 16:56:57,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2023-08-30 16:56:57,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:56:57,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2023-08-30 16:56:57,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 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 16:56:57,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 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 16:56:57,023 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 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 16:56:57,023 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 288 flow. Second operand 4 states and 375 transitions. [2023-08-30 16:56:57,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 75 transitions, 650 flow [2023-08-30 16:56:57,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 75 transitions, 638 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:56:57,034 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 534 flow [2023-08-30 16:56:57,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=534, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2023-08-30 16:56:57,035 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2023-08-30 16:56:57,035 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 534 flow [2023-08-30 16:56:57,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 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 16:56:57,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:56:57,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:56:57,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 16:56:57,036 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:56:57,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:56:57,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1279001014, now seen corresponding path program 1 times [2023-08-30 16:56:57,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:56:57,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027351791] [2023-08-30 16:56:57,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:56:57,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:56:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:56:57,156 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 16:56:57,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:56:57,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027351791] [2023-08-30 16:56:57,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027351791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:56:57,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:56:57,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:56:57,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157600987] [2023-08-30 16:56:57,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:56:57,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:56:57,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:56:57,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:56:57,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:56:57,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 162 [2023-08-30 16:56:57,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 534 flow. Second operand has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 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 16:56:57,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:56:57,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 162 [2023-08-30 16:56:57,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:56:57,450 INFO L130 PetriNetUnfolder]: 1913/2858 cut-off events. [2023-08-30 16:56:57,450 INFO L131 PetriNetUnfolder]: For 10953/10953 co-relation queries the response was YES. [2023-08-30 16:56:57,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11237 conditions, 2858 events. 1913/2858 cut-off events. For 10953/10953 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13572 event pairs, 446 based on Foata normal form. 36/2894 useless extension candidates. Maximal degree in co-relation 11212. Up to 1248 conditions per place. [2023-08-30 16:56:57,468 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 51 selfloop transitions, 26 changer transitions 3/80 dead transitions. [2023-08-30 16:56:57,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 80 transitions, 813 flow [2023-08-30 16:56:57,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:56:57,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:56:57,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2023-08-30 16:56:57,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5802469135802469 [2023-08-30 16:56:57,471 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2023-08-30 16:56:57,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2023-08-30 16:56:57,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:56:57,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2023-08-30 16:56:57,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 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 16:56:57,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 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 16:56:57,474 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 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 16:56:57,474 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 534 flow. Second operand 4 states and 376 transitions. [2023-08-30 16:56:57,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 80 transitions, 813 flow [2023-08-30 16:56:57,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 80 transitions, 813 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:56:57,491 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 654 flow [2023-08-30 16:56:57,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=654, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-08-30 16:56:57,492 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2023-08-30 16:56:57,492 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 654 flow [2023-08-30 16:56:57,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 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 16:56:57,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:56:57,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:56:57,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 16:56:57,493 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:56:57,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:56:57,494 INFO L85 PathProgramCache]: Analyzing trace with hash 561540036, now seen corresponding path program 1 times [2023-08-30 16:56:57,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:56:57,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193396864] [2023-08-30 16:56:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:56:57,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:56:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:56:57,619 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 16:56:57,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:56:57,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193396864] [2023-08-30 16:56:57,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193396864] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:56:57,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:56:57,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:56:57,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152550179] [2023-08-30 16:56:57,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:56:57,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:56:57,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:56:57,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:56:57,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:56:57,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 162 [2023-08-30 16:56:57,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 654 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 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 16:56:57,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:56:57,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 162 [2023-08-30 16:56:57,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:56:57,958 INFO L130 PetriNetUnfolder]: 2183/3389 cut-off events. [2023-08-30 16:56:57,958 INFO L131 PetriNetUnfolder]: For 17520/17575 co-relation queries the response was YES. [2023-08-30 16:56:57,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13806 conditions, 3389 events. 2183/3389 cut-off events. For 17520/17575 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 18058 event pairs, 565 based on Foata normal form. 84/3427 useless extension candidates. Maximal degree in co-relation 13776. Up to 1548 conditions per place. [2023-08-30 16:56:57,978 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 48 selfloop transitions, 8 changer transitions 21/82 dead transitions. [2023-08-30 16:56:57,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 82 transitions, 1046 flow [2023-08-30 16:56:57,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:56:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:56:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2023-08-30 16:56:57,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5941358024691358 [2023-08-30 16:56:57,980 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2023-08-30 16:56:57,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2023-08-30 16:56:57,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:56:57,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2023-08-30 16:56:57,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 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 16:56:57,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 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 16:56:57,983 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 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 16:56:57,983 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 654 flow. Second operand 4 states and 385 transitions. [2023-08-30 16:56:57,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 82 transitions, 1046 flow [2023-08-30 16:56:58,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 82 transitions, 1036 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-30 16:56:58,008 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 525 flow [2023-08-30 16:56:58,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=525, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2023-08-30 16:56:58,009 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2023-08-30 16:56:58,009 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 525 flow [2023-08-30 16:56:58,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 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 16:56:58,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:56:58,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:56:58,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 16:56:58,010 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:56:58,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:56:58,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1176329720, now seen corresponding path program 1 times [2023-08-30 16:56:58,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:56:58,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793521620] [2023-08-30 16:56:58,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:56:58,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:56:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:56:58,140 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 16:56:58,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:56:58,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793521620] [2023-08-30 16:56:58,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793521620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:56:58,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:56:58,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:56:58,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932552742] [2023-08-30 16:56:58,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:56:58,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:56:58,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:56:58,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:56:58,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:56:58,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 162 [2023-08-30 16:56:58,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 525 flow. Second operand has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 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 16:56:58,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:56:58,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 162 [2023-08-30 16:56:58,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:56:58,408 INFO L130 PetriNetUnfolder]: 1459/2232 cut-off events. [2023-08-30 16:56:58,409 INFO L131 PetriNetUnfolder]: For 11216/11216 co-relation queries the response was YES. [2023-08-30 16:56:58,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9127 conditions, 2232 events. 1459/2232 cut-off events. For 11216/11216 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10739 event pairs, 356 based on Foata normal form. 36/2268 useless extension candidates. Maximal degree in co-relation 9094. Up to 1124 conditions per place. [2023-08-30 16:56:58,423 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 42 selfloop transitions, 18 changer transitions 4/64 dead transitions. [2023-08-30 16:56:58,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 767 flow [2023-08-30 16:56:58,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:56:58,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:56:58,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2023-08-30 16:56:58,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2023-08-30 16:56:58,424 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 369 transitions. [2023-08-30 16:56:58,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 369 transitions. [2023-08-30 16:56:58,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:56:58,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 369 transitions. [2023-08-30 16:56:58,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 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 16:56:58,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 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 16:56:58,427 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 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 16:56:58,427 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 525 flow. Second operand 4 states and 369 transitions. [2023-08-30 16:56:58,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 767 flow [2023-08-30 16:56:58,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 64 transitions, 701 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 16:56:58,448 INFO L231 Difference]: Finished difference. Result has 59 places, 42 transitions, 540 flow [2023-08-30 16:56:58,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=540, PETRI_PLACES=59, PETRI_TRANSITIONS=42} [2023-08-30 16:56:58,448 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2023-08-30 16:56:58,449 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 42 transitions, 540 flow [2023-08-30 16:56:58,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 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 16:56:58,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:56:58,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:56:58,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 16:56:58,450 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:56:58,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:56:58,450 INFO L85 PathProgramCache]: Analyzing trace with hash 542011896, now seen corresponding path program 2 times [2023-08-30 16:56:58,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:56:58,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988466946] [2023-08-30 16:56:58,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:56:58,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:56:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:56:58,564 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 16:56:58,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:56:58,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988466946] [2023-08-30 16:56:58,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988466946] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:56:58,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:56:58,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:56:58,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852897302] [2023-08-30 16:56:58,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:56:58,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:56:58,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:56:58,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:56:58,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:56:58,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 162 [2023-08-30 16:56:58,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 42 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 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 16:56:58,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:56:58,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 162 [2023-08-30 16:56:58,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:56:58,787 INFO L130 PetriNetUnfolder]: 1127/1853 cut-off events. [2023-08-30 16:56:58,787 INFO L131 PetriNetUnfolder]: For 11094/11200 co-relation queries the response was YES. [2023-08-30 16:56:58,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7256 conditions, 1853 events. 1127/1853 cut-off events. For 11094/11200 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10230 event pairs, 335 based on Foata normal form. 111/1930 useless extension candidates. Maximal degree in co-relation 7223. Up to 1213 conditions per place. [2023-08-30 16:56:58,798 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 66 selfloop transitions, 9 changer transitions 26/110 dead transitions. [2023-08-30 16:56:58,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 110 transitions, 1562 flow [2023-08-30 16:56:58,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:56:58,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:56:58,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 474 transitions. [2023-08-30 16:56:58,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851851851851851 [2023-08-30 16:56:58,800 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 474 transitions. [2023-08-30 16:56:58,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 474 transitions. [2023-08-30 16:56:58,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:56:58,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 474 transitions. [2023-08-30 16:56:58,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 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 16:56:58,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 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 16:56:58,803 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 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 16:56:58,804 INFO L175 Difference]: Start difference. First operand has 59 places, 42 transitions, 540 flow. Second operand 5 states and 474 transitions. [2023-08-30 16:56:58,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 110 transitions, 1562 flow [2023-08-30 16:56:58,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 110 transitions, 1502 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-30 16:56:58,815 INFO L231 Difference]: Finished difference. Result has 65 places, 50 transitions, 585 flow [2023-08-30 16:56:58,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=585, PETRI_PLACES=65, PETRI_TRANSITIONS=50} [2023-08-30 16:56:58,816 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 32 predicate places. [2023-08-30 16:56:58,816 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 50 transitions, 585 flow [2023-08-30 16:56:58,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 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 16:56:58,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:56:58,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:56:58,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 16:56:58,817 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:56:58,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:56:58,817 INFO L85 PathProgramCache]: Analyzing trace with hash 68625228, now seen corresponding path program 1 times [2023-08-30 16:56:58,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:56:58,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506556267] [2023-08-30 16:56:58,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:56:58,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:56:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:56:58,931 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 16:56:58,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:56:58,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506556267] [2023-08-30 16:56:58,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506556267] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:56:58,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:56:58,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:56:58,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403214498] [2023-08-30 16:56:58,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:56:58,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:56:58,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:56:58,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:56:58,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:56:58,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 162 [2023-08-30 16:56:58,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 50 transitions, 585 flow. Second operand has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 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 16:56:58,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:56:58,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 162 [2023-08-30 16:56:58,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:56:59,170 INFO L130 PetriNetUnfolder]: 1076/1835 cut-off events. [2023-08-30 16:56:59,170 INFO L131 PetriNetUnfolder]: For 10006/10344 co-relation queries the response was YES. [2023-08-30 16:56:59,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9297 conditions, 1835 events. 1076/1835 cut-off events. For 10006/10344 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10774 event pairs, 83 based on Foata normal form. 166/1971 useless extension candidates. Maximal degree in co-relation 9260. Up to 1148 conditions per place. [2023-08-30 16:56:59,181 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 82 selfloop transitions, 17 changer transitions 36/144 dead transitions. [2023-08-30 16:56:59,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 144 transitions, 2035 flow [2023-08-30 16:56:59,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:56:59,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:56:59,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 662 transitions. [2023-08-30 16:56:59,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5837742504409171 [2023-08-30 16:56:59,184 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 662 transitions. [2023-08-30 16:56:59,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 662 transitions. [2023-08-30 16:56:59,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:56:59,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 662 transitions. [2023-08-30 16:56:59,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.57142857142857) internal successors, (662), 7 states have internal predecessors, (662), 0 states have call successors, (0), 0 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 16:56:59,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 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 16:56:59,188 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 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 16:56:59,188 INFO L175 Difference]: Start difference. First operand has 65 places, 50 transitions, 585 flow. Second operand 7 states and 662 transitions. [2023-08-30 16:56:59,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 144 transitions, 2035 flow [2023-08-30 16:56:59,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 144 transitions, 1962 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:56:59,200 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 680 flow [2023-08-30 16:56:59,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=680, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2023-08-30 16:56:59,200 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 39 predicate places. [2023-08-30 16:56:59,201 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 680 flow [2023-08-30 16:56:59,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 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 16:56:59,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:56:59,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:56:59,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 16:56:59,202 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:56:59,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:56:59,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1838314156, now seen corresponding path program 1 times [2023-08-30 16:56:59,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:56:59,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60732063] [2023-08-30 16:56:59,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:56:59,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:56:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:56:59,329 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 16:56:59,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:56:59,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60732063] [2023-08-30 16:56:59,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60732063] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:56:59,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:56:59,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:56:59,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671367858] [2023-08-30 16:56:59,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:56:59,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 16:56:59,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:56:59,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 16:56:59,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 16:56:59,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 162 [2023-08-30 16:56:59,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 680 flow. Second operand has 6 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 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 16:56:59,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:56:59,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 162 [2023-08-30 16:56:59,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:56:59,599 INFO L130 PetriNetUnfolder]: 943/1669 cut-off events. [2023-08-30 16:56:59,599 INFO L131 PetriNetUnfolder]: For 9413/9990 co-relation queries the response was YES. [2023-08-30 16:56:59,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10209 conditions, 1669 events. 943/1669 cut-off events. For 9413/9990 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 10087 event pairs, 24 based on Foata normal form. 192/1833 useless extension candidates. Maximal degree in co-relation 10169. Up to 1021 conditions per place. [2023-08-30 16:56:59,609 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 72 selfloop transitions, 13 changer transitions 75/168 dead transitions. [2023-08-30 16:56:59,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 168 transitions, 2351 flow [2023-08-30 16:56:59,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 16:56:59,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 16:56:59,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 850 transitions. [2023-08-30 16:56:59,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5829903978052127 [2023-08-30 16:56:59,612 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 850 transitions. [2023-08-30 16:56:59,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 850 transitions. [2023-08-30 16:56:59,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:56:59,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 850 transitions. [2023-08-30 16:56:59,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.44444444444444) internal successors, (850), 9 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 16:56:59,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 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 16:56:59,617 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 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 16:56:59,617 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 680 flow. Second operand 9 states and 850 transitions. [2023-08-30 16:56:59,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 168 transitions, 2351 flow [2023-08-30 16:56:59,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 168 transitions, 2306 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-08-30 16:56:59,656 INFO L231 Difference]: Finished difference. Result has 80 places, 53 transitions, 669 flow [2023-08-30 16:56:59,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=669, PETRI_PLACES=80, PETRI_TRANSITIONS=53} [2023-08-30 16:56:59,657 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 47 predicate places. [2023-08-30 16:56:59,657 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 53 transitions, 669 flow [2023-08-30 16:56:59,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 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 16:56:59,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:56:59,658 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 16:56:59,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 16:56:59,658 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:56:59,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:56:59,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1510454651, now seen corresponding path program 1 times [2023-08-30 16:56:59,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:56:59,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868061783] [2023-08-30 16:56:59,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:56:59,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:56:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:56:59,804 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 16:56:59,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:56:59,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868061783] [2023-08-30 16:56:59,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868061783] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:56:59,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:56:59,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:56:59,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925567718] [2023-08-30 16:56:59,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:56:59,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:56:59,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:56:59,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:56:59,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:56:59,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 162 [2023-08-30 16:56:59,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 53 transitions, 669 flow. Second operand has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 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 16:56:59,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:56:59,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 162 [2023-08-30 16:56:59,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:56:59,966 INFO L130 PetriNetUnfolder]: 569/1004 cut-off events. [2023-08-30 16:56:59,966 INFO L131 PetriNetUnfolder]: For 8555/8555 co-relation queries the response was YES. [2023-08-30 16:56:59,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6299 conditions, 1004 events. 569/1004 cut-off events. For 8555/8555 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4798 event pairs, 63 based on Foata normal form. 6/1010 useless extension candidates. Maximal degree in co-relation 6256. Up to 468 conditions per place. [2023-08-30 16:56:59,972 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 53 selfloop transitions, 16 changer transitions 65/134 dead transitions. [2023-08-30 16:56:59,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 134 transitions, 1723 flow [2023-08-30 16:56:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 16:56:59,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 16:56:59,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 547 transitions. [2023-08-30 16:56:59,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5627572016460906 [2023-08-30 16:56:59,975 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 547 transitions. [2023-08-30 16:56:59,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 547 transitions. [2023-08-30 16:56:59,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:56:59,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 547 transitions. [2023-08-30 16:56:59,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.16666666666667) internal successors, (547), 6 states have internal predecessors, (547), 0 states have call successors, (0), 0 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 16:56:59,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 16:56:59,979 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 16:56:59,979 INFO L175 Difference]: Start difference. First operand has 80 places, 53 transitions, 669 flow. Second operand 6 states and 547 transitions. [2023-08-30 16:56:59,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 134 transitions, 1723 flow [2023-08-30 16:57:00,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 134 transitions, 1395 flow, removed 118 selfloop flow, removed 9 redundant places. [2023-08-30 16:57:00,013 INFO L231 Difference]: Finished difference. Result has 70 places, 47 transitions, 532 flow [2023-08-30 16:57:00,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=532, PETRI_PLACES=70, PETRI_TRANSITIONS=47} [2023-08-30 16:57:00,015 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 37 predicate places. [2023-08-30 16:57:00,015 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 47 transitions, 532 flow [2023-08-30 16:57:00,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 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 16:57:00,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:57:00,015 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 16:57:00,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 16:57:00,016 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:57:00,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:57:00,016 INFO L85 PathProgramCache]: Analyzing trace with hash 625563137, now seen corresponding path program 2 times [2023-08-30 16:57:00,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:57:00,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430878158] [2023-08-30 16:57:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:57:00,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:57:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:57:00,191 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 16:57:00,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:57:00,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430878158] [2023-08-30 16:57:00,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430878158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:57:00,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:57:00,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 16:57:00,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230104595] [2023-08-30 16:57:00,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:57:00,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 16:57:00,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:57:00,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 16:57:00,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 16:57:00,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 162 [2023-08-30 16:57:00,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 47 transitions, 532 flow. Second operand has 7 states, 7 states have (on average 87.42857142857143) internal successors, (612), 7 states have internal predecessors, (612), 0 states have call successors, (0), 0 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 16:57:00,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:57:00,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 162 [2023-08-30 16:57:00,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:57:00,316 INFO L130 PetriNetUnfolder]: 225/431 cut-off events. [2023-08-30 16:57:00,317 INFO L131 PetriNetUnfolder]: For 2535/2640 co-relation queries the response was YES. [2023-08-30 16:57:00,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2252 conditions, 431 events. 225/431 cut-off events. For 2535/2640 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1871 event pairs, 12 based on Foata normal form. 55/476 useless extension candidates. Maximal degree in co-relation 2217. Up to 140 conditions per place. [2023-08-30 16:57:00,319 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 21 selfloop transitions, 17 changer transitions 45/85 dead transitions. [2023-08-30 16:57:00,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 85 transitions, 1116 flow [2023-08-30 16:57:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 16:57:00,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 16:57:00,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 737 transitions. [2023-08-30 16:57:00,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5686728395061729 [2023-08-30 16:57:00,322 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 737 transitions. [2023-08-30 16:57:00,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 737 transitions. [2023-08-30 16:57:00,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:57:00,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 737 transitions. [2023-08-30 16:57:00,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.125) internal successors, (737), 8 states have internal predecessors, (737), 0 states have call successors, (0), 0 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 16:57:00,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 162.0) internal successors, (1458), 9 states have internal predecessors, (1458), 0 states have call successors, (0), 0 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 16:57:00,327 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 162.0) internal successors, (1458), 9 states have internal predecessors, (1458), 0 states have call successors, (0), 0 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 16:57:00,327 INFO L175 Difference]: Start difference. First operand has 70 places, 47 transitions, 532 flow. Second operand 8 states and 737 transitions. [2023-08-30 16:57:00,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 85 transitions, 1116 flow [2023-08-30 16:57:00,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 85 transitions, 971 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-08-30 16:57:00,336 INFO L231 Difference]: Finished difference. Result has 70 places, 32 transitions, 296 flow [2023-08-30 16:57:00,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=296, PETRI_PLACES=70, PETRI_TRANSITIONS=32} [2023-08-30 16:57:00,338 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 37 predicate places. [2023-08-30 16:57:00,338 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 32 transitions, 296 flow [2023-08-30 16:57:00,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.42857142857143) internal successors, (612), 7 states have internal predecessors, (612), 0 states have call successors, (0), 0 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 16:57:00,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:57:00,338 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] [2023-08-30 16:57:00,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 16:57:00,339 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:57:00,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:57:00,339 INFO L85 PathProgramCache]: Analyzing trace with hash 406969096, now seen corresponding path program 1 times [2023-08-30 16:57:00,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:57:00,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761973423] [2023-08-30 16:57:00,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:57:00,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:57:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:57:00,480 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 16:57:00,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:57:00,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761973423] [2023-08-30 16:57:00,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761973423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:57:00,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:57:00,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:57:00,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627426955] [2023-08-30 16:57:00,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:57:00,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:57:00,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:57:00,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:57:00,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:57:00,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 162 [2023-08-30 16:57:00,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 32 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 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 16:57:00,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:57:00,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 162 [2023-08-30 16:57:00,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:57:00,526 INFO L130 PetriNetUnfolder]: 44/94 cut-off events. [2023-08-30 16:57:00,526 INFO L131 PetriNetUnfolder]: For 659/659 co-relation queries the response was YES. [2023-08-30 16:57:00,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 94 events. 44/94 cut-off events. For 659/659 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 186 event pairs, 14 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 542. Up to 57 conditions per place. [2023-08-30 16:57:00,527 INFO L137 encePairwiseOnDemand]: 159/162 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-08-30 16:57:00,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 35 transitions, 380 flow [2023-08-30 16:57:00,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:57:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:57:00,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2023-08-30 16:57:00,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5339506172839507 [2023-08-30 16:57:00,529 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2023-08-30 16:57:00,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2023-08-30 16:57:00,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:57:00,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2023-08-30 16:57:00,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 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 16:57:00,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 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 16:57:00,533 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 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 16:57:00,533 INFO L175 Difference]: Start difference. First operand has 70 places, 32 transitions, 296 flow. Second operand 4 states and 346 transitions. [2023-08-30 16:57:00,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 35 transitions, 380 flow [2023-08-30 16:57:00,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 35 transitions, 240 flow, removed 17 selfloop flow, removed 26 redundant places. [2023-08-30 16:57:00,535 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-08-30 16:57:00,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-08-30 16:57:00,536 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-08-30 16:57:00,536 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-08-30 16:57:00,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 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 16:57:00,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-30 16:57:00,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-30 16:57:00,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-30 16:57:00,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-30 16:57:00,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-30 16:57:00,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 16:57:00,540 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:57:00,544 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:57:00,544 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:57:00,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:57:00 BasicIcfg [2023-08-30 16:57:00,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:57:00,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:57:00,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:57:00,547 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:57:00,548 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:56:51" (3/4) ... [2023-08-30 16:57:00,550 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 16:57:00,555 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 16:57:00,555 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 16:57:00,555 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-30 16:57:00,555 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-08-30 16:57:00,560 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-08-30 16:57:00,560 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 16:57:00,560 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 16:57:00,560 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 16:57:00,588 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:57:00,588 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:57:00,589 INFO L158 Benchmark]: Toolchain (without parser) took 9703.99ms. Allocated memory was 67.1MB in the beginning and 455.1MB in the end (delta: 388.0MB). Free memory was 33.7MB in the beginning and 253.8MB in the end (delta: -220.1MB). Peak memory consumption was 167.3MB. Max. memory is 16.1GB. [2023-08-30 16:57:00,589 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 54.5MB. Free memory was 32.6MB in the beginning and 32.5MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:57:00,589 INFO L158 Benchmark]: CACSL2BoogieTranslator took 520.47ms. Allocated memory is still 67.1MB. Free memory was 33.5MB in the beginning and 28.6MB in the end (delta: 4.9MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2023-08-30 16:57:00,590 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.43ms. Allocated memory is still 67.1MB. Free memory was 28.6MB in the beginning and 46.2MB in the end (delta: -17.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 16:57:00,590 INFO L158 Benchmark]: Boogie Preprocessor took 44.88ms. Allocated memory is still 67.1MB. Free memory was 46.2MB in the beginning and 44.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:57:00,590 INFO L158 Benchmark]: RCFGBuilder took 370.75ms. Allocated memory is still 67.1MB. Free memory was 44.5MB in the beginning and 30.4MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 16:57:00,590 INFO L158 Benchmark]: TraceAbstraction took 8651.41ms. Allocated memory was 67.1MB in the beginning and 455.1MB in the end (delta: 388.0MB). Free memory was 29.6MB in the beginning and 257.0MB in the end (delta: -227.4MB). Peak memory consumption was 160.6MB. Max. memory is 16.1GB. [2023-08-30 16:57:00,590 INFO L158 Benchmark]: Witness Printer took 41.56ms. Allocated memory is still 455.1MB. Free memory was 257.0MB in the beginning and 253.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:57:00,592 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 54.5MB. Free memory was 32.6MB in the beginning and 32.5MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 520.47ms. Allocated memory is still 67.1MB. Free memory was 33.5MB in the beginning and 28.6MB in the end (delta: 4.9MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.43ms. Allocated memory is still 67.1MB. Free memory was 28.6MB in the beginning and 46.2MB in the end (delta: -17.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.88ms. Allocated memory is still 67.1MB. Free memory was 46.2MB in the beginning and 44.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 370.75ms. Allocated memory is still 67.1MB. Free memory was 44.5MB in the beginning and 30.4MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8651.41ms. Allocated memory was 67.1MB in the beginning and 455.1MB in the end (delta: 388.0MB). Free memory was 29.6MB in the beginning and 257.0MB in the end (delta: -227.4MB). Peak memory consumption was 160.6MB. Max. memory is 16.1GB. * Witness Printer took 41.56ms. Allocated memory is still 455.1MB. Free memory was 257.0MB in the beginning and 253.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 92 PlacesBefore, 33 PlacesAfterwards, 80 TransitionsBefore, 20 TransitionsAfterwards, 1542 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2424 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1243, independent: 1169, independent conditional: 0, independent unconditional: 1169, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 797, independent: 773, independent conditional: 0, independent unconditional: 773, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1243, independent: 396, independent conditional: 0, independent unconditional: 396, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 797, unknown conditional: 0, unknown unconditional: 797] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 127 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.5s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 574 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 402 mSDsluCounter, 194 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 79 mSDsCounter, 101 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1057 IncrementalHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 101 mSolverCounterUnsat, 115 mSDtfsCounter, 1057 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=680occurred in iteration=10, InterpolantAutomatonStates: 69, 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, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 848 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 16:57:00,606 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 Result: TRUE