./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe014_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 BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_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 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 09:56:18,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:56:18,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:56:18,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:56:18,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:56:18,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:56:18,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:56:18,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:56:18,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:56:18,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:56:18,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:56:18,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:56:18,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:56:18,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:56:18,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:56:18,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:56:18,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:56:18,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:56:18,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:56:18,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:56:18,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:56:18,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:56:18,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:56:18,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:56:18,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:56:18,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:56:18,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:56:18,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:56:18,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:56:18,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:56:18,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:56:18,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:56:18,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:56:18,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:56:18,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:56:18,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:56:18,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:56:18,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:56:18,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:56:18,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:56:18,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:56:18,646 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:56:18,679 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:56:18,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:56:18,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:56:18,681 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:56:18,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:56:18,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:56:18,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:56:18,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:56:18,683 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:56:18,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:56:18,684 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:56:18,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:56:18,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:56:18,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:56:18,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:56:18,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:56:18,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:56:18,685 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:56:18,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:56:18,686 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:56:18,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:56:18,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:56:18,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:56:18,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:56:18,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:56:18,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:56:18,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:56:18,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:56:18,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:56:18,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:56:18,688 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:56:18,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:56:18,689 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:56:18,689 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:56:18,689 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:56:18,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:56:19,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:56:19,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:56:19,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:56:19,056 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:56:19,056 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:56:19,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-09-01 09:56:20,223 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:56:20,444 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:56:20,445 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-09-01 09:56:20,458 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ce38ad35/97917e28f3f0433b97d0b9ba28a720cf/FLAG0bd48f1ae [2023-09-01 09:56:20,478 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ce38ad35/97917e28f3f0433b97d0b9ba28a720cf [2023-09-01 09:56:20,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:56:20,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:56:20,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:56:20,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:56:20,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:56:20,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:56:20" (1/1) ... [2023-09-01 09:56:20,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3247fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:20, skipping insertion in model container [2023-09-01 09:56:20,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:56:20" (1/1) ... [2023-09-01 09:56:20,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:56:20,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:56:20,714 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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-09-01 09:56:20,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:56:20,896 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:56:20,910 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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-09-01 09:56:20,948 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:56:20,982 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:56:20,982 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:56:20,988 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:56:20,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:20 WrapperNode [2023-09-01 09:56:20,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:56:20,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:56:20,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:56:20,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:56:20,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:20" (1/1) ... [2023-09-01 09:56:21,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:20" (1/1) ... [2023-09-01 09:56:21,043 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-09-01 09:56:21,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:56:21,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:56:21,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:56:21,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:56:21,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:20" (1/1) ... [2023-09-01 09:56:21,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:20" (1/1) ... [2023-09-01 09:56:21,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:20" (1/1) ... [2023-09-01 09:56:21,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:20" (1/1) ... [2023-09-01 09:56:21,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:20" (1/1) ... [2023-09-01 09:56:21,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:20" (1/1) ... [2023-09-01 09:56:21,081 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:20" (1/1) ... [2023-09-01 09:56:21,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:20" (1/1) ... [2023-09-01 09:56:21,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:56:21,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:56:21,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:56:21,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:56:21,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:20" (1/1) ... [2023-09-01 09:56:21,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:56:21,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:56:21,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 09:56:21,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 09:56:21,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:56:21,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:56:21,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:56:21,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:56:21,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:56:21,174 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-09-01 09:56:21,174 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-09-01 09:56:21,174 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-09-01 09:56:21,174 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-09-01 09:56:21,174 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-09-01 09:56:21,174 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-09-01 09:56:21,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:56:21,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:56:21,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:56:21,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:56:21,176 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 09:56:21,351 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:56:21,353 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:56:21,492 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:56:21,498 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:56:21,498 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:56:21,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:56:21 BoogieIcfgContainer [2023-09-01 09:56:21,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:56:21,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:56:21,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:56:21,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:56:21,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:56:20" (1/3) ... [2023-09-01 09:56:21,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225fad94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:56:21, skipping insertion in model container [2023-09-01 09:56:21,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:56:20" (2/3) ... [2023-09-01 09:56:21,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225fad94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:56:21, skipping insertion in model container [2023-09-01 09:56:21,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:56:21" (3/3) ... [2023-09-01 09:56:21,507 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-09-01 09:56:21,514 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:56:21,523 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:56:21,524 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 09:56:21,524 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:56:21,598 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 09:56:21,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-09-01 09:56:21,681 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2023-09-01 09:56:21,685 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:56:21,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-09-01 09:56:21,690 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-09-01 09:56:21,695 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-09-01 09:56:21,699 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:56:21,711 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-09-01 09:56:21,713 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-09-01 09:56:21,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-09-01 09:56:21,735 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2023-09-01 09:56:21,735 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:56:21,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-09-01 09:56:21,741 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-09-01 09:56:23,798 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-09-01 09:56:23,798 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-09-01 09:56:23,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:56:23,817 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;@68aec9f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:56:23,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 09:56:23,822 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-09-01 09:56:23,823 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:56:23,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:23,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:23,824 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 1 more)] === [2023-09-01 09:56:23,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:23,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1940031658, now seen corresponding path program 1 times [2023-09-01 09:56:23,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:23,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173169074] [2023-09-01 09:56:23,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:23,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:56:24,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:24,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173169074] [2023-09-01 09:56:24,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173169074] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:24,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:24,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:56:24,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922456856] [2023-09-01 09:56:24,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:24,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:56:24,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:24,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:56:24,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:56:24,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-09-01 09:56:24,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:24,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:24,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-09-01 09:56:24,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:24,616 INFO L130 PetriNetUnfolder]: 418/718 cut-off events. [2023-09-01 09:56:24,617 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-09-01 09:56:24,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1461 conditions, 718 events. 418/718 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3409 event pairs, 155 based on Foata normal form. 31/748 useless extension candidates. Maximal degree in co-relation 1450. Up to 416 conditions per place. [2023-09-01 09:56:24,628 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-09-01 09:56:24,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 133 flow [2023-09-01 09:56:24,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:56:24,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:56:24,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-09-01 09:56:24,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2023-09-01 09:56:24,646 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-09-01 09:56:24,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-09-01 09:56:24,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:24,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-09-01 09:56:24,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:24,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:24,661 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:24,663 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 240 transitions. [2023-09-01 09:56:24,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 133 flow [2023-09-01 09:56:24,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 09:56:24,667 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-09-01 09:56:24,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-09-01 09:56:24,675 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-09-01 09:56:24,675 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-09-01 09:56:24,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:24,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:24,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:24,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:56:24,678 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 1 more)] === [2023-09-01 09:56:24,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:24,679 INFO L85 PathProgramCache]: Analyzing trace with hash 11438640, now seen corresponding path program 1 times [2023-09-01 09:56:24,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:24,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118218928] [2023-09-01 09:56:24,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:24,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:56:24,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:24,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118218928] [2023-09-01 09:56:24,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118218928] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:24,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:24,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:56:24,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004016817] [2023-09-01 09:56:24,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:24,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:56:24,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:24,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:56:24,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:56:24,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-09-01 09:56:24,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:24,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:24,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-09-01 09:56:24,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:24,970 INFO L130 PetriNetUnfolder]: 382/647 cut-off events. [2023-09-01 09:56:24,970 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2023-09-01 09:56:24,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 647 events. 382/647 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2933 event pairs, 60 based on Foata normal form. 9/651 useless extension candidates. Maximal degree in co-relation 1760. Up to 345 conditions per place. [2023-09-01 09:56:24,974 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 30 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-09-01 09:56:24,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 212 flow [2023-09-01 09:56:24,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:56:24,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:56:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-09-01 09:56:24,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2023-09-01 09:56:24,977 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-09-01 09:56:24,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-09-01 09:56:24,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:24,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-09-01 09:56:24,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:24,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:24,981 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:24,981 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 315 transitions. [2023-09-01 09:56:24,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 212 flow [2023-09-01 09:56:24,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:56:24,985 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 122 flow [2023-09-01 09:56:24,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-09-01 09:56:24,986 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-09-01 09:56:24,986 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 122 flow [2023-09-01 09:56:24,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:24,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:24,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:24,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:56:24,987 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 1 more)] === [2023-09-01 09:56:24,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:24,988 INFO L85 PathProgramCache]: Analyzing trace with hash 354596265, now seen corresponding path program 1 times [2023-09-01 09:56:24,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:24,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856959205] [2023-09-01 09:56:24,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:24,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:25,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:56:25,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:25,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856959205] [2023-09-01 09:56:25,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856959205] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:25,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:25,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:56:25,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589139074] [2023-09-01 09:56:25,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:25,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:56:25,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:25,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:56:25,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:56:25,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 141 [2023-09-01 09:56:25,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:25,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:25,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 141 [2023-09-01 09:56:25,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:25,296 INFO L130 PetriNetUnfolder]: 589/947 cut-off events. [2023-09-01 09:56:25,297 INFO L131 PetriNetUnfolder]: For 1075/1075 co-relation queries the response was YES. [2023-09-01 09:56:25,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2879 conditions, 947 events. 589/947 cut-off events. For 1075/1075 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4044 event pairs, 92 based on Foata normal form. 12/959 useless extension candidates. Maximal degree in co-relation 2864. Up to 267 conditions per place. [2023-09-01 09:56:25,303 INFO L137 encePairwiseOnDemand]: 133/141 looper letters, 39 selfloop transitions, 18 changer transitions 0/57 dead transitions. [2023-09-01 09:56:25,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 57 transitions, 384 flow [2023-09-01 09:56:25,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:56:25,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:56:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 386 transitions. [2023-09-01 09:56:25,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5475177304964539 [2023-09-01 09:56:25,306 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 386 transitions. [2023-09-01 09:56:25,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 386 transitions. [2023-09-01 09:56:25,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:25,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 386 transitions. [2023-09-01 09:56:25,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:25,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:25,310 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:25,310 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 122 flow. Second operand 5 states and 386 transitions. [2023-09-01 09:56:25,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 57 transitions, 384 flow [2023-09-01 09:56:25,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 57 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:56:25,315 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 293 flow [2023-09-01 09:56:25,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-09-01 09:56:25,316 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-09-01 09:56:25,316 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 293 flow [2023-09-01 09:56:25,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:25,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:25,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:25,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:56:25,317 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 1 more)] === [2023-09-01 09:56:25,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:25,318 INFO L85 PathProgramCache]: Analyzing trace with hash 380916753, now seen corresponding path program 1 times [2023-09-01 09:56:25,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:25,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921278993] [2023-09-01 09:56:25,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:25,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:56:25,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:25,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921278993] [2023-09-01 09:56:25,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921278993] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:25,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:25,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:56:25,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933358264] [2023-09-01 09:56:25,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:25,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:56:25,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:25,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:56:25,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:56:25,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-09-01 09:56:25,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:25,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:25,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-09-01 09:56:25,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:25,616 INFO L130 PetriNetUnfolder]: 458/781 cut-off events. [2023-09-01 09:56:25,616 INFO L131 PetriNetUnfolder]: For 1800/1803 co-relation queries the response was YES. [2023-09-01 09:56:25,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3049 conditions, 781 events. 458/781 cut-off events. For 1800/1803 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3573 event pairs, 76 based on Foata normal form. 11/781 useless extension candidates. Maximal degree in co-relation 3029. Up to 371 conditions per place. [2023-09-01 09:56:25,624 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 41 selfloop transitions, 19 changer transitions 0/62 dead transitions. [2023-09-01 09:56:25,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 62 transitions, 540 flow [2023-09-01 09:56:25,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:56:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:56:25,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2023-09-01 09:56:25,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5656028368794326 [2023-09-01 09:56:25,629 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 319 transitions. [2023-09-01 09:56:25,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 319 transitions. [2023-09-01 09:56:25,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:25,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 319 transitions. [2023-09-01 09:56:25,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:25,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:25,633 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:25,633 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 293 flow. Second operand 4 states and 319 transitions. [2023-09-01 09:56:25,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 62 transitions, 540 flow [2023-09-01 09:56:25,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 540 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 09:56:25,640 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 451 flow [2023-09-01 09:56:25,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=451, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-09-01 09:56:25,641 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2023-09-01 09:56:25,641 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 451 flow [2023-09-01 09:56:25,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:25,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:25,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:25,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 09:56:25,643 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 1 more)] === [2023-09-01 09:56:25,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:25,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1892390759, now seen corresponding path program 1 times [2023-09-01 09:56:25,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:25,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263519829] [2023-09-01 09:56:25,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:25,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:56:25,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:25,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263519829] [2023-09-01 09:56:25,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263519829] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:25,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:25,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:56:25,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227228710] [2023-09-01 09:56:25,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:25,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:56:25,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:25,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:56:25,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:56:25,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 141 [2023-09-01 09:56:25,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 451 flow. Second operand has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:25,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:25,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 141 [2023-09-01 09:56:25,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:26,002 INFO L130 PetriNetUnfolder]: 587/962 cut-off events. [2023-09-01 09:56:26,003 INFO L131 PetriNetUnfolder]: For 4219/4219 co-relation queries the response was YES. [2023-09-01 09:56:26,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4143 conditions, 962 events. 587/962 cut-off events. For 4219/4219 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4093 event pairs, 166 based on Foata normal form. 33/995 useless extension candidates. Maximal degree in co-relation 4118. Up to 383 conditions per place. [2023-09-01 09:56:26,008 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 32 selfloop transitions, 9 changer transitions 27/68 dead transitions. [2023-09-01 09:56:26,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 753 flow [2023-09-01 09:56:26,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:56:26,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:56:26,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 380 transitions. [2023-09-01 09:56:26,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2023-09-01 09:56:26,010 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 380 transitions. [2023-09-01 09:56:26,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 380 transitions. [2023-09-01 09:56:26,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:26,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 380 transitions. [2023-09-01 09:56:26,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,013 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,013 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 451 flow. Second operand 5 states and 380 transitions. [2023-09-01 09:56:26,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 753 flow [2023-09-01 09:56:26,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 747 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:56:26,024 INFO L231 Difference]: Finished difference. Result has 50 places, 29 transitions, 281 flow [2023-09-01 09:56:26,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=50, PETRI_TRANSITIONS=29} [2023-09-01 09:56:26,025 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-09-01 09:56:26,025 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 29 transitions, 281 flow [2023-09-01 09:56:26,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:26,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:26,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 09:56:26,026 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 1 more)] === [2023-09-01 09:56:26,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:26,027 INFO L85 PathProgramCache]: Analyzing trace with hash 989321049, now seen corresponding path program 1 times [2023-09-01 09:56:26,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:26,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293074811] [2023-09-01 09:56:26,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:26,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:56:26,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:26,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293074811] [2023-09-01 09:56:26,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293074811] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:26,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:26,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:56:26,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091672459] [2023-09-01 09:56:26,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:26,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:56:26,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:26,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:56:26,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:56:26,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-09-01 09:56:26,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 29 transitions, 281 flow. Second operand has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:26,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-09-01 09:56:26,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:26,308 INFO L130 PetriNetUnfolder]: 250/447 cut-off events. [2023-09-01 09:56:26,308 INFO L131 PetriNetUnfolder]: For 2003/2003 co-relation queries the response was YES. [2023-09-01 09:56:26,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1868 conditions, 447 events. 250/447 cut-off events. For 2003/2003 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1874 event pairs, 60 based on Foata normal form. 16/463 useless extension candidates. Maximal degree in co-relation 1840. Up to 147 conditions per place. [2023-09-01 09:56:26,312 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 26 selfloop transitions, 12 changer transitions 14/54 dead transitions. [2023-09-01 09:56:26,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 529 flow [2023-09-01 09:56:26,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:56:26,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:56:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 467 transitions. [2023-09-01 09:56:26,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520094562647754 [2023-09-01 09:56:26,315 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 467 transitions. [2023-09-01 09:56:26,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 467 transitions. [2023-09-01 09:56:26,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:26,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 467 transitions. [2023-09-01 09:56:26,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,318 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,319 INFO L175 Difference]: Start difference. First operand has 50 places, 29 transitions, 281 flow. Second operand 6 states and 467 transitions. [2023-09-01 09:56:26,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 529 flow [2023-09-01 09:56:26,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 423 flow, removed 16 selfloop flow, removed 10 redundant places. [2023-09-01 09:56:26,325 INFO L231 Difference]: Finished difference. Result has 49 places, 29 transitions, 260 flow [2023-09-01 09:56:26,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=49, PETRI_TRANSITIONS=29} [2023-09-01 09:56:26,329 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-09-01 09:56:26,329 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 29 transitions, 260 flow [2023-09-01 09:56:26,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:26,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:26,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 09:56:26,331 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 1 more)] === [2023-09-01 09:56:26,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:26,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1882305127, now seen corresponding path program 1 times [2023-09-01 09:56:26,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:26,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454568895] [2023-09-01 09:56:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:26,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:56:26,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:26,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454568895] [2023-09-01 09:56:26,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454568895] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:26,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:26,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:56:26,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337327805] [2023-09-01 09:56:26,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:26,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:56:26,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:26,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:56:26,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:56:26,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-09-01 09:56:26,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 29 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:26,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-09-01 09:56:26,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:26,567 INFO L130 PetriNetUnfolder]: 121/254 cut-off events. [2023-09-01 09:56:26,568 INFO L131 PetriNetUnfolder]: For 1097/1102 co-relation queries the response was YES. [2023-09-01 09:56:26,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 961 conditions, 254 events. 121/254 cut-off events. For 1097/1102 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1092 event pairs, 25 based on Foata normal form. 15/265 useless extension candidates. Maximal degree in co-relation 936. Up to 137 conditions per place. [2023-09-01 09:56:26,569 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 30 selfloop transitions, 6 changer transitions 15/61 dead transitions. [2023-09-01 09:56:26,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 610 flow [2023-09-01 09:56:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:56:26,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:56:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 407 transitions. [2023-09-01 09:56:26,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.577304964539007 [2023-09-01 09:56:26,571 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 407 transitions. [2023-09-01 09:56:26,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 407 transitions. [2023-09-01 09:56:26,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:26,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 407 transitions. [2023-09-01 09:56:26,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.4) internal successors, (407), 5 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,574 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,574 INFO L175 Difference]: Start difference. First operand has 49 places, 29 transitions, 260 flow. Second operand 5 states and 407 transitions. [2023-09-01 09:56:26,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 610 flow [2023-09-01 09:56:26,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 580 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-09-01 09:56:26,578 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 292 flow [2023-09-01 09:56:26,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2023-09-01 09:56:26,579 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2023-09-01 09:56:26,579 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 292 flow [2023-09-01 09:56:26,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:26,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:26,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 09:56:26,580 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 1 more)] === [2023-09-01 09:56:26,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:26,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1614134419, now seen corresponding path program 1 times [2023-09-01 09:56:26,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:26,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044338852] [2023-09-01 09:56:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:26,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:26,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:56:26,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:26,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044338852] [2023-09-01 09:56:26,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044338852] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:26,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:26,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:56:26,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576495854] [2023-09-01 09:56:26,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:26,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:56:26,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:26,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:56:26,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:56:26,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-09-01 09:56:26,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:26,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-09-01 09:56:26,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:26,795 INFO L130 PetriNetUnfolder]: 94/217 cut-off events. [2023-09-01 09:56:26,796 INFO L131 PetriNetUnfolder]: For 998/1034 co-relation queries the response was YES. [2023-09-01 09:56:26,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 217 events. 94/217 cut-off events. For 998/1034 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 965 event pairs, 5 based on Foata normal form. 34/248 useless extension candidates. Maximal degree in co-relation 973. Up to 98 conditions per place. [2023-09-01 09:56:26,797 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 35 selfloop transitions, 10 changer transitions 15/70 dead transitions. [2023-09-01 09:56:26,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 704 flow [2023-09-01 09:56:26,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:56:26,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:56:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 564 transitions. [2023-09-01 09:56:26,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2023-09-01 09:56:26,799 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 564 transitions. [2023-09-01 09:56:26,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 564 transitions. [2023-09-01 09:56:26,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:26,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 564 transitions. [2023-09-01 09:56:26,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.57142857142857) internal successors, (564), 7 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,803 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,803 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 292 flow. Second operand 7 states and 564 transitions. [2023-09-01 09:56:26,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 704 flow [2023-09-01 09:56:26,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 70 transitions, 704 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 09:56:26,807 INFO L231 Difference]: Finished difference. Result has 60 places, 38 transitions, 359 flow [2023-09-01 09:56:26,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2023-09-01 09:56:26,808 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 33 predicate places. [2023-09-01 09:56:26,808 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 359 flow [2023-09-01 09:56:26,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:26,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:26,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 09:56:26,808 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 1 more)] === [2023-09-01 09:56:26,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:26,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1239293505, now seen corresponding path program 1 times [2023-09-01 09:56:26,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:26,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588400504] [2023-09-01 09:56:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:26,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:26,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:56:26,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:26,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588400504] [2023-09-01 09:56:26,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588400504] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:26,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:26,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:56:26,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977165717] [2023-09-01 09:56:26,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:26,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 09:56:26,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:26,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 09:56:26,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 09:56:26,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-09-01 09:56:26,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 38 transitions, 359 flow. Second operand has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:26,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:26,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-09-01 09:56:26,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:27,025 INFO L130 PetriNetUnfolder]: 71/172 cut-off events. [2023-09-01 09:56:27,025 INFO L131 PetriNetUnfolder]: For 1145/1201 co-relation queries the response was YES. [2023-09-01 09:56:27,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 946 conditions, 172 events. 71/172 cut-off events. For 1145/1201 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 729 event pairs, 2 based on Foata normal form. 41/210 useless extension candidates. Maximal degree in co-relation 916. Up to 71 conditions per place. [2023-09-01 09:56:27,026 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 24 selfloop transitions, 12 changer transitions 26/68 dead transitions. [2023-09-01 09:56:27,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 68 transitions, 749 flow [2023-09-01 09:56:27,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 09:56:27,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 09:56:27,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 710 transitions. [2023-09-01 09:56:27,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5594956658786446 [2023-09-01 09:56:27,029 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 710 transitions. [2023-09-01 09:56:27,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 710 transitions. [2023-09-01 09:56:27,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:27,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 710 transitions. [2023-09-01 09:56:27,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.88888888888889) internal successors, (710), 9 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:27,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:27,033 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:27,033 INFO L175 Difference]: Start difference. First operand has 60 places, 38 transitions, 359 flow. Second operand 9 states and 710 transitions. [2023-09-01 09:56:27,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 68 transitions, 749 flow [2023-09-01 09:56:27,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 721 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-09-01 09:56:27,038 INFO L231 Difference]: Finished difference. Result has 65 places, 32 transitions, 304 flow [2023-09-01 09:56:27,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=304, PETRI_PLACES=65, PETRI_TRANSITIONS=32} [2023-09-01 09:56:27,039 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 38 predicate places. [2023-09-01 09:56:27,039 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 32 transitions, 304 flow [2023-09-01 09:56:27,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:27,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:56:27,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:27,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 09:56:27,040 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 1 more)] === [2023-09-01 09:56:27,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:56:27,040 INFO L85 PathProgramCache]: Analyzing trace with hash 2006420856, now seen corresponding path program 1 times [2023-09-01 09:56:27,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:56:27,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715283077] [2023-09-01 09:56:27,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:56:27,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:56:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:56:27,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:56:27,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:56:27,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715283077] [2023-09-01 09:56:27,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715283077] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:56:27,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:56:27,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:56:27,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114558743] [2023-09-01 09:56:27,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:56:27,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:56:27,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:56:27,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:56:27,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:56:27,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-09-01 09:56:27,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 32 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:27,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:56:27,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-09-01 09:56:27,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:56:27,211 INFO L130 PetriNetUnfolder]: 52/121 cut-off events. [2023-09-01 09:56:27,212 INFO L131 PetriNetUnfolder]: For 778/778 co-relation queries the response was YES. [2023-09-01 09:56:27,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 121 events. 52/121 cut-off events. For 778/778 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 382 event pairs, 9 based on Foata normal form. 1/122 useless extension candidates. Maximal degree in co-relation 712. Up to 87 conditions per place. [2023-09-01 09:56:27,212 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2023-09-01 09:56:27,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 39 transitions, 414 flow [2023-09-01 09:56:27,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:56:27,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:56:27,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2023-09-01 09:56:27,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2023-09-01 09:56:27,214 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 303 transitions. [2023-09-01 09:56:27,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 303 transitions. [2023-09-01 09:56:27,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:56:27,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 303 transitions. [2023-09-01 09:56:27,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:27,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:27,216 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:27,217 INFO L175 Difference]: Start difference. First operand has 65 places, 32 transitions, 304 flow. Second operand 4 states and 303 transitions. [2023-09-01 09:56:27,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 39 transitions, 414 flow [2023-09-01 09:56:27,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 39 transitions, 327 flow, removed 12 selfloop flow, removed 12 redundant places. [2023-09-01 09:56:27,220 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2023-09-01 09:56:27,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=52, PETRI_TRANSITIONS=0} [2023-09-01 09:56:27,220 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2023-09-01 09:56:27,221 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2023-09-01 09:56:27,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:56:27,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-09-01 09:56:27,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-09-01 09:56:27,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-09-01 09:56:27,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-09-01 09:56:27,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 09:56:27,224 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:56:27,227 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:56:27,227 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:56:27,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:56:27 BasicIcfg [2023-09-01 09:56:27,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:56:27,230 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:56:27,230 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:56:27,230 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:56:27,230 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:56:21" (3/4) ... [2023-09-01 09:56:27,232 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 09:56:27,238 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-09-01 09:56:27,238 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-09-01 09:56:27,238 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-09-01 09:56:27,241 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-09-01 09:56:27,241 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 09:56:27,242 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 09:56:27,242 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 09:56:27,266 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:56:27,266 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:56:27,267 INFO L158 Benchmark]: Toolchain (without parser) took 6786.48ms. Allocated memory was 62.9MB in the beginning and 138.4MB in the end (delta: 75.5MB). Free memory was 29.8MB in the beginning and 62.3MB in the end (delta: -32.5MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2023-09-01 09:56:27,267 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 48.2MB. Free memory was 26.6MB in the beginning and 26.6MB in the end (delta: 54.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:56:27,267 INFO L158 Benchmark]: CACSL2BoogieTranslator took 506.75ms. Allocated memory is still 62.9MB. Free memory was 29.6MB in the beginning and 29.0MB in the end (delta: 630.2kB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2023-09-01 09:56:27,268 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.81ms. Allocated memory is still 62.9MB. Free memory was 29.0MB in the beginning and 26.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:56:27,268 INFO L158 Benchmark]: Boogie Preprocessor took 56.50ms. Allocated memory is still 62.9MB. Free memory was 26.8MB in the beginning and 43.3MB in the end (delta: -16.5MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2023-09-01 09:56:27,268 INFO L158 Benchmark]: RCFGBuilder took 398.24ms. Allocated memory is still 62.9MB. Free memory was 43.3MB in the beginning and 29.8MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 09:56:27,268 INFO L158 Benchmark]: TraceAbstraction took 5727.23ms. Allocated memory was 62.9MB in the beginning and 138.4MB in the end (delta: 75.5MB). Free memory was 29.3MB in the beginning and 65.4MB in the end (delta: -36.2MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. [2023-09-01 09:56:27,268 INFO L158 Benchmark]: Witness Printer took 36.95ms. Allocated memory is still 138.4MB. Free memory was 65.4MB in the beginning and 62.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:56:27,270 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 48.2MB. Free memory was 26.6MB in the beginning and 26.6MB in the end (delta: 54.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 506.75ms. Allocated memory is still 62.9MB. Free memory was 29.6MB in the beginning and 29.0MB in the end (delta: 630.2kB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.81ms. Allocated memory is still 62.9MB. Free memory was 29.0MB in the beginning and 26.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.50ms. Allocated memory is still 62.9MB. Free memory was 26.8MB in the beginning and 43.3MB in the end (delta: -16.5MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * RCFGBuilder took 398.24ms. Allocated memory is still 62.9MB. Free memory was 43.3MB in the beginning and 29.8MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5727.23ms. Allocated memory was 62.9MB in the beginning and 138.4MB in the end (delta: 75.5MB). Free memory was 29.3MB in the beginning and 65.4MB in the end (delta: -36.2MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. * Witness Printer took 36.95ms. Allocated memory is still 138.4MB. Free memory was 65.4MB in the beginning and 62.3MB 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: 2.1s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1050, independent: 973, independent conditional: 0, independent unconditional: 973, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 562, independent: 541, independent conditional: 0, independent unconditional: 541, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1050, independent: 432, independent conditional: 0, independent unconditional: 432, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 562, unknown conditional: 0, unknown unconditional: 562] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, 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 7 procedures, 108 locations, 4 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: 5.6s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 360 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 262 mSDsluCounter, 127 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 80 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 596 IncrementalHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 80 mSolverCounterUnsat, 70 mSDtfsCounter, 596 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=451occurred in iteration=4, InterpolantAutomatonStates: 52, 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, 1.5s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 555 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! [2023-09-01 09:56:27,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE