./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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 ../sv-benchmarks/c/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 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:11:18,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:11:18,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:11:18,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:11:18,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:11:18,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:11:18,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:11:18,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:11:18,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:11:18,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:11:18,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:11:18,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:11:18,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:11:18,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:11:18,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:11:18,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:11:18,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:11:18,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:11:18,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:11:18,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:11:18,268 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:11:18,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:11:18,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:11:18,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:11:18,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:11:18,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:11:18,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:11:18,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:11:18,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:11:18,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:11:18,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:11:18,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:11:18,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:11:18,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:11:18,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:11:18,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:11:18,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:11:18,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:11:18,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:11:18,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:11:18,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:11:18,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:11:18,282 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:11:18,299 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:11:18,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:11:18,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:11:18,300 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:11:18,301 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:11:18,301 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:11:18,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:11:18,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:11:18,302 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:11:18,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:11:18,303 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:11:18,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:11:18,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:11:18,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:11:18,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:11:18,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:11:18,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:11:18,304 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:11:18,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:11:18,304 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:11:18,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:11:18,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:11:18,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:11:18,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:11:18,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:11:18,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:11:18,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:11:18,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:11:18,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:11:18,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:11:18,307 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:11:18,307 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:11:18,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:11:18,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 [2022-07-19 21:11:18,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:11:18,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:11:18,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:11:18,537 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:11:18,539 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:11:18,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-19 21:11:18,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcaede482/bb7d5bd2954f48fda91bcbd401b6c0e4/FLAGaa11faeb9 [2022-07-19 21:11:19,094 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:11:19,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-19 21:11:19,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcaede482/bb7d5bd2954f48fda91bcbd401b6c0e4/FLAGaa11faeb9 [2022-07-19 21:11:19,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcaede482/bb7d5bd2954f48fda91bcbd401b6c0e4 [2022-07-19 21:11:19,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:11:19,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:11:19,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:11:19,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:11:19,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:11:19,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:19" (1/1) ... [2022-07-19 21:11:19,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c592fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:19, skipping insertion in model container [2022-07-19 21:11:19,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:19" (1/1) ... [2022-07-19 21:11:19,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:11:19,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:11:19,625 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-19 21:11:19,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:11:19,765 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:11:19,780 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-07-19 21:11:19,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:11:19,874 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:11:19,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:19 WrapperNode [2022-07-19 21:11:19,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:11:19,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:11:19,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:11:19,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:11:19,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:19" (1/1) ... [2022-07-19 21:11:19,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:19" (1/1) ... [2022-07-19 21:11:19,933 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-07-19 21:11:19,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:11:19,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:11:19,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:11:19,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:11:19,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:19" (1/1) ... [2022-07-19 21:11:19,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:19" (1/1) ... [2022-07-19 21:11:19,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:19" (1/1) ... [2022-07-19 21:11:19,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:19" (1/1) ... [2022-07-19 21:11:19,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:19" (1/1) ... [2022-07-19 21:11:19,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:19" (1/1) ... [2022-07-19 21:11:19,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:19" (1/1) ... [2022-07-19 21:11:19,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:11:19,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:11:19,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:11:19,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:11:19,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:19" (1/1) ... [2022-07-19 21:11:19,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:11:20,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:11:20,021 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) [2022-07-19 21:11:20,024 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 [2022-07-19 21:11:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:11:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:11:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:11:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:11:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:11:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-19 21:11:20,052 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-19 21:11:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-19 21:11:20,052 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-19 21:11:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-19 21:11:20,053 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-19 21:11:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:11:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:11:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:11:20,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:11:20,054 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:11:20,145 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:11:20,146 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:11:20,340 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:11:20,347 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:11:20,347 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:11:20,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:20 BoogieIcfgContainer [2022-07-19 21:11:20,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:11:20,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:11:20,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:11:20,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:11:20,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:11:19" (1/3) ... [2022-07-19 21:11:20,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261de35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:20, skipping insertion in model container [2022-07-19 21:11:20,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:19" (2/3) ... [2022-07-19 21:11:20,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261de35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:20, skipping insertion in model container [2022-07-19 21:11:20,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:20" (3/3) ... [2022-07-19 21:11:20,357 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-07-19 21:11:20,362 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:11:20,371 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:11:20,371 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:11:20,372 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:11:20,412 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:11:20,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-07-19 21:11:20,484 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2022-07-19 21:11:20,484 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:11:20,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-07-19 21:11:20,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-07-19 21:11:20,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-07-19 21:11:20,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:11:20,507 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@11c98a10, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@718b690c [2022-07-19 21:11:20,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:11:20,539 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2022-07-19 21:11:20,542 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:11:20,542 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:20,543 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:20,543 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)] === [2022-07-19 21:11:20,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:20,549 INFO L85 PathProgramCache]: Analyzing trace with hash -669003802, now seen corresponding path program 1 times [2022-07-19 21:11:20,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:20,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535271842] [2022-07-19 21:11:20,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:20,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:21,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:21,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:21,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535271842] [2022-07-19 21:11:21,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535271842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:21,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:21,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:11:21,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027168084] [2022-07-19 21:11:21,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:21,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:11:21,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:21,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:11:21,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:11:21,092 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-19 21:11:21,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:21,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:21,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-19 21:11:21,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:21,477 INFO L129 PetriNetUnfolder]: 369/1023 cut-off events. [2022-07-19 21:11:21,477 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-07-19 21:11:21,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1686 conditions, 1023 events. 369/1023 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 6632 event pairs, 60 based on Foata normal form. 31/1023 useless extension candidates. Maximal degree in co-relation 1648. Up to 229 conditions per place. [2022-07-19 21:11:21,490 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 21 selfloop transitions, 8 changer transitions 37/122 dead transitions. [2022-07-19 21:11:21,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 122 transitions, 391 flow [2022-07-19 21:11:21,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:11:21,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:11:21,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 700 transitions. [2022-07-19 21:11:21,511 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8454106280193237 [2022-07-19 21:11:21,512 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 700 transitions. [2022-07-19 21:11:21,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 700 transitions. [2022-07-19 21:11:21,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:21,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 700 transitions. [2022-07-19 21:11:21,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.77777777777777) internal successors, (700), 9 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:21,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:21,536 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:21,538 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 9 states and 700 transitions. [2022-07-19 21:11:21,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 122 transitions, 391 flow [2022-07-19 21:11:21,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 122 transitions, 386 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-19 21:11:21,548 INFO L242 Difference]: Finished difference. Result has 97 places, 79 transitions, 250 flow [2022-07-19 21:11:21,550 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=250, PETRI_PLACES=97, PETRI_TRANSITIONS=79} [2022-07-19 21:11:21,554 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2022-07-19 21:11:21,555 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 79 transitions, 250 flow [2022-07-19 21:11:21,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:21,555 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:21,556 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:21,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:11:21,557 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)] === [2022-07-19 21:11:21,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:21,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1081069657, now seen corresponding path program 1 times [2022-07-19 21:11:21,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:21,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133595472] [2022-07-19 21:11:21,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:21,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:21,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:21,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133595472] [2022-07-19 21:11:21,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133595472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:21,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:21,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:21,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984336999] [2022-07-19 21:11:21,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:21,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:21,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:21,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:21,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:21,761 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-19 21:11:21,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 79 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:21,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:21,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-19 21:11:21,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:22,058 INFO L129 PetriNetUnfolder]: 229/662 cut-off events. [2022-07-19 21:11:22,058 INFO L130 PetriNetUnfolder]: For 1218/1554 co-relation queries the response was YES. [2022-07-19 21:11:22,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2093 conditions, 662 events. 229/662 cut-off events. For 1218/1554 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3638 event pairs, 14 based on Foata normal form. 21/655 useless extension candidates. Maximal degree in co-relation 2044. Up to 174 conditions per place. [2022-07-19 21:11:22,066 INFO L132 encePairwiseOnDemand]: 80/92 looper letters, 26 selfloop transitions, 9 changer transitions 58/149 dead transitions. [2022-07-19 21:11:22,066 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 149 transitions, 962 flow [2022-07-19 21:11:22,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:11:22,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:11:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 989 transitions. [2022-07-19 21:11:22,069 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8269230769230769 [2022-07-19 21:11:22,069 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 989 transitions. [2022-07-19 21:11:22,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 989 transitions. [2022-07-19 21:11:22,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:22,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 989 transitions. [2022-07-19 21:11:22,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.07692307692308) internal successors, (989), 13 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:22,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:22,076 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:22,076 INFO L186 Difference]: Start difference. First operand has 97 places, 79 transitions, 250 flow. Second operand 13 states and 989 transitions. [2022-07-19 21:11:22,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 149 transitions, 962 flow [2022-07-19 21:11:22,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 149 transitions, 896 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:11:22,089 INFO L242 Difference]: Finished difference. Result has 113 places, 83 transitions, 332 flow [2022-07-19 21:11:22,089 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=332, PETRI_PLACES=113, PETRI_TRANSITIONS=83} [2022-07-19 21:11:22,090 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 29 predicate places. [2022-07-19 21:11:22,090 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 83 transitions, 332 flow [2022-07-19 21:11:22,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:22,091 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:22,091 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:22,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:11:22,092 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)] === [2022-07-19 21:11:22,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:22,094 INFO L85 PathProgramCache]: Analyzing trace with hash 903878887, now seen corresponding path program 1 times [2022-07-19 21:11:22,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:22,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701760769] [2022-07-19 21:11:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:22,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:22,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:22,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:22,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701760769] [2022-07-19 21:11:22,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701760769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:22,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:22,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:22,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976922657] [2022-07-19 21:11:22,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:22,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:22,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:22,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:22,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:22,243 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-19 21:11:22,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 83 transitions, 332 flow. Second operand has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:22,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:22,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-19 21:11:22,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:22,511 INFO L129 PetriNetUnfolder]: 124/470 cut-off events. [2022-07-19 21:11:22,511 INFO L130 PetriNetUnfolder]: For 1677/1836 co-relation queries the response was YES. [2022-07-19 21:11:22,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1624 conditions, 470 events. 124/470 cut-off events. For 1677/1836 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2338 event pairs, 4 based on Foata normal form. 16/467 useless extension candidates. Maximal degree in co-relation 1561. Up to 105 conditions per place. [2022-07-19 21:11:22,516 INFO L132 encePairwiseOnDemand]: 79/92 looper letters, 25 selfloop transitions, 14 changer transitions 40/135 dead transitions. [2022-07-19 21:11:22,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 135 transitions, 948 flow [2022-07-19 21:11:22,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:11:22,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:11:22,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 981 transitions. [2022-07-19 21:11:22,520 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8202341137123745 [2022-07-19 21:11:22,520 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 981 transitions. [2022-07-19 21:11:22,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 981 transitions. [2022-07-19 21:11:22,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:22,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 981 transitions. [2022-07-19 21:11:22,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.46153846153847) internal successors, (981), 13 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:22,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:22,526 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:22,526 INFO L186 Difference]: Start difference. First operand has 113 places, 83 transitions, 332 flow. Second operand 13 states and 981 transitions. [2022-07-19 21:11:22,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 135 transitions, 948 flow [2022-07-19 21:11:22,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 135 transitions, 863 flow, removed 40 selfloop flow, removed 4 redundant places. [2022-07-19 21:11:22,540 INFO L242 Difference]: Finished difference. Result has 124 places, 87 transitions, 432 flow [2022-07-19 21:11:22,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=432, PETRI_PLACES=124, PETRI_TRANSITIONS=87} [2022-07-19 21:11:22,542 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 40 predicate places. [2022-07-19 21:11:22,543 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 87 transitions, 432 flow [2022-07-19 21:11:22,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:22,543 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:22,544 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:22,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:11:22,544 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)] === [2022-07-19 21:11:22,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:22,545 INFO L85 PathProgramCache]: Analyzing trace with hash -454503192, now seen corresponding path program 1 times [2022-07-19 21:11:22,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:22,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004456491] [2022-07-19 21:11:22,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:22,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:22,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:22,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004456491] [2022-07-19 21:11:22,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004456491] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:22,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:22,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:22,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793703109] [2022-07-19 21:11:22,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:22,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:22,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:22,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:22,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:22,705 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-19 21:11:22,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 87 transitions, 432 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:22,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:22,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-19 21:11:22,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:22,956 INFO L129 PetriNetUnfolder]: 71/371 cut-off events. [2022-07-19 21:11:22,956 INFO L130 PetriNetUnfolder]: For 1396/1630 co-relation queries the response was YES. [2022-07-19 21:11:22,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 371 events. 71/371 cut-off events. For 1396/1630 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1769 event pairs, 3 based on Foata normal form. 16/375 useless extension candidates. Maximal degree in co-relation 1186. Up to 73 conditions per place. [2022-07-19 21:11:22,961 INFO L132 encePairwiseOnDemand]: 80/92 looper letters, 27 selfloop transitions, 16 changer transitions 28/127 dead transitions. [2022-07-19 21:11:22,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 127 transitions, 970 flow [2022-07-19 21:11:22,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:11:22,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:11:22,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 969 transitions. [2022-07-19 21:11:22,964 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.810200668896321 [2022-07-19 21:11:22,964 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 969 transitions. [2022-07-19 21:11:22,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 969 transitions. [2022-07-19 21:11:22,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:22,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 969 transitions. [2022-07-19 21:11:22,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.53846153846153) internal successors, (969), 13 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:22,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:22,971 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:22,971 INFO L186 Difference]: Start difference. First operand has 124 places, 87 transitions, 432 flow. Second operand 13 states and 969 transitions. [2022-07-19 21:11:22,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 127 transitions, 970 flow [2022-07-19 21:11:22,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 127 transitions, 836 flow, removed 65 selfloop flow, removed 13 redundant places. [2022-07-19 21:11:22,981 INFO L242 Difference]: Finished difference. Result has 126 places, 90 transitions, 505 flow [2022-07-19 21:11:22,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=505, PETRI_PLACES=126, PETRI_TRANSITIONS=90} [2022-07-19 21:11:22,982 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 42 predicate places. [2022-07-19 21:11:22,982 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 90 transitions, 505 flow [2022-07-19 21:11:22,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:22,983 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:22,983 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:22,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:11:22,984 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)] === [2022-07-19 21:11:22,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:22,984 INFO L85 PathProgramCache]: Analyzing trace with hash 309806588, now seen corresponding path program 1 times [2022-07-19 21:11:22,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:22,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291289206] [2022-07-19 21:11:22,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:22,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:23,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:23,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:23,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291289206] [2022-07-19 21:11:23,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291289206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:23,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:23,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:23,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228535550] [2022-07-19 21:11:23,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:23,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:23,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:23,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:23,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:23,096 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-19 21:11:23,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 90 transitions, 505 flow. Second operand has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:23,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:23,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-19 21:11:23,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:23,303 INFO L129 PetriNetUnfolder]: 45/287 cut-off events. [2022-07-19 21:11:23,303 INFO L130 PetriNetUnfolder]: For 970/1233 co-relation queries the response was YES. [2022-07-19 21:11:23,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 287 events. 45/287 cut-off events. For 970/1233 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1263 event pairs, 4 based on Foata normal form. 8/284 useless extension candidates. Maximal degree in co-relation 921. Up to 45 conditions per place. [2022-07-19 21:11:23,307 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 32 selfloop transitions, 18 changer transitions 16/122 dead transitions. [2022-07-19 21:11:23,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 122 transitions, 948 flow [2022-07-19 21:11:23,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:11:23,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:11:23,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 962 transitions. [2022-07-19 21:11:23,311 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8043478260869565 [2022-07-19 21:11:23,311 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 962 transitions. [2022-07-19 21:11:23,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 962 transitions. [2022-07-19 21:11:23,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:23,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 962 transitions. [2022-07-19 21:11:23,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.0) internal successors, (962), 13 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:23,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:23,318 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:23,318 INFO L186 Difference]: Start difference. First operand has 126 places, 90 transitions, 505 flow. Second operand 13 states and 962 transitions. [2022-07-19 21:11:23,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 122 transitions, 948 flow [2022-07-19 21:11:23,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 122 transitions, 849 flow, removed 44 selfloop flow, removed 13 redundant places. [2022-07-19 21:11:23,326 INFO L242 Difference]: Finished difference. Result has 128 places, 95 transitions, 637 flow [2022-07-19 21:11:23,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=637, PETRI_PLACES=128, PETRI_TRANSITIONS=95} [2022-07-19 21:11:23,327 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 44 predicate places. [2022-07-19 21:11:23,328 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 95 transitions, 637 flow [2022-07-19 21:11:23,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:23,328 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:23,328 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:23,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:11:23,329 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)] === [2022-07-19 21:11:23,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:23,330 INFO L85 PathProgramCache]: Analyzing trace with hash 513336377, now seen corresponding path program 1 times [2022-07-19 21:11:23,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:23,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029534230] [2022-07-19 21:11:23,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:23,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:23,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:23,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029534230] [2022-07-19 21:11:23,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029534230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:23,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:23,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:23,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965720152] [2022-07-19 21:11:23,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:23,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:23,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:23,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:23,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:23,413 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-19 21:11:23,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 95 transitions, 637 flow. Second operand has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:23,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:23,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-19 21:11:23,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:23,554 INFO L129 PetriNetUnfolder]: 39/263 cut-off events. [2022-07-19 21:11:23,555 INFO L130 PetriNetUnfolder]: For 1267/1903 co-relation queries the response was YES. [2022-07-19 21:11:23,556 INFO L84 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 263 events. 39/263 cut-off events. For 1267/1903 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1151 event pairs, 3 based on Foata normal form. 4/260 useless extension candidates. Maximal degree in co-relation 926. Up to 50 conditions per place. [2022-07-19 21:11:23,557 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 9 selfloop transitions, 5 changer transitions 23/108 dead transitions. [2022-07-19 21:11:23,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 108 transitions, 799 flow [2022-07-19 21:11:23,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:11:23,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:11:23,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 777 transitions. [2022-07-19 21:11:23,560 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8445652173913043 [2022-07-19 21:11:23,560 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 777 transitions. [2022-07-19 21:11:23,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 777 transitions. [2022-07-19 21:11:23,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:23,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 777 transitions. [2022-07-19 21:11:23,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.7) internal successors, (777), 10 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:23,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:23,564 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:23,564 INFO L186 Difference]: Start difference. First operand has 128 places, 95 transitions, 637 flow. Second operand 10 states and 777 transitions. [2022-07-19 21:11:23,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 108 transitions, 799 flow [2022-07-19 21:11:23,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 108 transitions, 730 flow, removed 31 selfloop flow, removed 13 redundant places. [2022-07-19 21:11:23,572 INFO L242 Difference]: Finished difference. Result has 123 places, 85 transitions, 471 flow [2022-07-19 21:11:23,572 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=471, PETRI_PLACES=123, PETRI_TRANSITIONS=85} [2022-07-19 21:11:23,573 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 39 predicate places. [2022-07-19 21:11:23,573 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 85 transitions, 471 flow [2022-07-19 21:11:23,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:23,573 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:23,574 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:23,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:11:23,574 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)] === [2022-07-19 21:11:23,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:23,575 INFO L85 PathProgramCache]: Analyzing trace with hash 6806727, now seen corresponding path program 1 times [2022-07-19 21:11:23,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:23,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748383673] [2022-07-19 21:11:23,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:23,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:23,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:23,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:23,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748383673] [2022-07-19 21:11:23,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748383673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:23,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:23,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:11:23,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396891830] [2022-07-19 21:11:23,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:23,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:11:23,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:23,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:11:23,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:11:23,671 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-19 21:11:23,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 85 transitions, 471 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:23,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:23,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-19 21:11:23,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:23,829 INFO L129 PetriNetUnfolder]: 264/734 cut-off events. [2022-07-19 21:11:23,829 INFO L130 PetriNetUnfolder]: For 629/644 co-relation queries the response was YES. [2022-07-19 21:11:23,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 734 events. 264/734 cut-off events. For 629/644 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4798 event pairs, 4 based on Foata normal form. 1/694 useless extension candidates. Maximal degree in co-relation 1510. Up to 191 conditions per place. [2022-07-19 21:11:23,837 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 25 selfloop transitions, 15 changer transitions 5/116 dead transitions. [2022-07-19 21:11:23,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 116 transitions, 625 flow [2022-07-19 21:11:23,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:11:23,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:11:23,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 797 transitions. [2022-07-19 21:11:23,840 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.866304347826087 [2022-07-19 21:11:23,840 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 797 transitions. [2022-07-19 21:11:23,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 797 transitions. [2022-07-19 21:11:23,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:23,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 797 transitions. [2022-07-19 21:11:23,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.7) internal successors, (797), 10 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:23,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:23,844 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:23,844 INFO L186 Difference]: Start difference. First operand has 123 places, 85 transitions, 471 flow. Second operand 10 states and 797 transitions. [2022-07-19 21:11:23,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 116 transitions, 625 flow [2022-07-19 21:11:23,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 116 transitions, 559 flow, removed 18 selfloop flow, removed 15 redundant places. [2022-07-19 21:11:23,851 INFO L242 Difference]: Finished difference. Result has 117 places, 98 transitions, 514 flow [2022-07-19 21:11:23,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=514, PETRI_PLACES=117, PETRI_TRANSITIONS=98} [2022-07-19 21:11:23,853 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 33 predicate places. [2022-07-19 21:11:23,853 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 98 transitions, 514 flow [2022-07-19 21:11:23,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:23,854 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:23,854 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:23,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:11:23,854 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)] === [2022-07-19 21:11:23,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:23,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1434859680, now seen corresponding path program 1 times [2022-07-19 21:11:23,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:23,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744286799] [2022-07-19 21:11:23,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:23,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:23,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:23,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744286799] [2022-07-19 21:11:23,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744286799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:23,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:23,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:11:23,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442483021] [2022-07-19 21:11:23,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:23,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:11:23,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:23,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:11:23,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:11:23,985 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-19 21:11:23,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 98 transitions, 514 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:23,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:23,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-19 21:11:23,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:24,189 INFO L129 PetriNetUnfolder]: 261/740 cut-off events. [2022-07-19 21:11:24,189 INFO L130 PetriNetUnfolder]: For 1845/1987 co-relation queries the response was YES. [2022-07-19 21:11:24,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2538 conditions, 740 events. 261/740 cut-off events. For 1845/1987 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4926 event pairs, 0 based on Foata normal form. 57/775 useless extension candidates. Maximal degree in co-relation 2464. Up to 279 conditions per place. [2022-07-19 21:11:24,197 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 24 selfloop transitions, 28 changer transitions 11/134 dead transitions. [2022-07-19 21:11:24,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 134 transitions, 868 flow [2022-07-19 21:11:24,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:11:24,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:11:24,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1034 transitions. [2022-07-19 21:11:24,200 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8645484949832776 [2022-07-19 21:11:24,200 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1034 transitions. [2022-07-19 21:11:24,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1034 transitions. [2022-07-19 21:11:24,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:24,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1034 transitions. [2022-07-19 21:11:24,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.53846153846153) internal successors, (1034), 13 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:24,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:24,207 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:24,207 INFO L186 Difference]: Start difference. First operand has 117 places, 98 transitions, 514 flow. Second operand 13 states and 1034 transitions. [2022-07-19 21:11:24,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 134 transitions, 868 flow [2022-07-19 21:11:24,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 134 transitions, 866 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:11:24,215 INFO L242 Difference]: Finished difference. Result has 134 places, 115 transitions, 738 flow [2022-07-19 21:11:24,215 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=738, PETRI_PLACES=134, PETRI_TRANSITIONS=115} [2022-07-19 21:11:24,217 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 50 predicate places. [2022-07-19 21:11:24,217 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 115 transitions, 738 flow [2022-07-19 21:11:24,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:24,218 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:24,218 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:24,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:11:24,218 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)] === [2022-07-19 21:11:24,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:24,219 INFO L85 PathProgramCache]: Analyzing trace with hash 226942149, now seen corresponding path program 1 times [2022-07-19 21:11:24,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:24,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497903017] [2022-07-19 21:11:24,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:24,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:24,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:24,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497903017] [2022-07-19 21:11:24,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497903017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:24,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:24,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:11:24,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144145899] [2022-07-19 21:11:24,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:24,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:11:24,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:24,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:11:24,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:11:24,308 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-07-19 21:11:24,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 115 transitions, 738 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:24,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:24,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-07-19 21:11:24,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:24,576 INFO L129 PetriNetUnfolder]: 185/644 cut-off events. [2022-07-19 21:11:24,576 INFO L130 PetriNetUnfolder]: For 2903/3069 co-relation queries the response was YES. [2022-07-19 21:11:24,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2741 conditions, 644 events. 185/644 cut-off events. For 2903/3069 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4651 event pairs, 0 based on Foata normal form. 57/679 useless extension candidates. Maximal degree in co-relation 2659. Up to 201 conditions per place. [2022-07-19 21:11:24,582 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 19 selfloop transitions, 32 changer transitions 24/142 dead transitions. [2022-07-19 21:11:24,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 142 transitions, 1066 flow [2022-07-19 21:11:24,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:11:24,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:11:24,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1256 transitions. [2022-07-19 21:11:24,586 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8532608695652174 [2022-07-19 21:11:24,586 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1256 transitions. [2022-07-19 21:11:24,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1256 transitions. [2022-07-19 21:11:24,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:24,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1256 transitions. [2022-07-19 21:11:24,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.5) internal successors, (1256), 16 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:24,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:24,593 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:24,593 INFO L186 Difference]: Start difference. First operand has 134 places, 115 transitions, 738 flow. Second operand 16 states and 1256 transitions. [2022-07-19 21:11:24,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 142 transitions, 1066 flow [2022-07-19 21:11:24,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 142 transitions, 978 flow, removed 30 selfloop flow, removed 7 redundant places. [2022-07-19 21:11:24,608 INFO L242 Difference]: Finished difference. Result has 149 places, 112 transitions, 720 flow [2022-07-19 21:11:24,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=720, PETRI_PLACES=149, PETRI_TRANSITIONS=112} [2022-07-19 21:11:24,609 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 65 predicate places. [2022-07-19 21:11:24,610 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 112 transitions, 720 flow [2022-07-19 21:11:24,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:24,610 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:24,610 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:24,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:11:24,611 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)] === [2022-07-19 21:11:24,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:24,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1864704222, now seen corresponding path program 1 times [2022-07-19 21:11:24,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:24,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225145217] [2022-07-19 21:11:24,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:24,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:24,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:24,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:24,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225145217] [2022-07-19 21:11:24,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225145217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:24,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:24,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:11:24,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318359823] [2022-07-19 21:11:24,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:24,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:11:24,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:24,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:11:24,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:11:24,705 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-19 21:11:24,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 112 transitions, 720 flow. Second operand has 8 states, 8 states have (on average 72.25) internal successors, (578), 8 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:24,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:24,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-19 21:11:24,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:24,833 INFO L129 PetriNetUnfolder]: 81/482 cut-off events. [2022-07-19 21:11:24,833 INFO L130 PetriNetUnfolder]: For 1403/1422 co-relation queries the response was YES. [2022-07-19 21:11:24,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1625 conditions, 482 events. 81/482 cut-off events. For 1403/1422 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3362 event pairs, 0 based on Foata normal form. 1/472 useless extension candidates. Maximal degree in co-relation 1556. Up to 65 conditions per place. [2022-07-19 21:11:24,837 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 11 selfloop transitions, 7 changer transitions 40/119 dead transitions. [2022-07-19 21:11:24,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 119 transitions, 822 flow [2022-07-19 21:11:24,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:11:24,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:11:24,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 659 transitions. [2022-07-19 21:11:24,847 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7958937198067633 [2022-07-19 21:11:24,847 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 659 transitions. [2022-07-19 21:11:24,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 659 transitions. [2022-07-19 21:11:24,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:24,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 659 transitions. [2022-07-19 21:11:24,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.22222222222223) internal successors, (659), 9 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:24,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:24,851 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:24,851 INFO L186 Difference]: Start difference. First operand has 149 places, 112 transitions, 720 flow. Second operand 9 states and 659 transitions. [2022-07-19 21:11:24,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 119 transitions, 822 flow [2022-07-19 21:11:24,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 119 transitions, 694 flow, removed 19 selfloop flow, removed 17 redundant places. [2022-07-19 21:11:24,862 INFO L242 Difference]: Finished difference. Result has 141 places, 79 transitions, 346 flow [2022-07-19 21:11:24,863 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=346, PETRI_PLACES=141, PETRI_TRANSITIONS=79} [2022-07-19 21:11:24,863 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 57 predicate places. [2022-07-19 21:11:24,863 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 79 transitions, 346 flow [2022-07-19 21:11:24,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.25) internal successors, (578), 8 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:24,864 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:11:24,864 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:24,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:11:24,864 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:11:24,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:11:24,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1769550120, now seen corresponding path program 2 times [2022-07-19 21:11:24,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:11:24,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445939157] [2022-07-19 21:11:24,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:11:24,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:11:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:11:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:11:24,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:11:24,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445939157] [2022-07-19 21:11:24,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445939157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:11:24,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:11:24,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:11:24,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136868258] [2022-07-19 21:11:24,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:11:24,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:11:24,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:11:24,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:11:24,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:11:24,962 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-07-19 21:11:24,963 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 79 transitions, 346 flow. Second operand has 8 states, 8 states have (on average 72.25) internal successors, (578), 8 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:24,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:11:24,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-07-19 21:11:24,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:11:25,032 INFO L129 PetriNetUnfolder]: 6/94 cut-off events. [2022-07-19 21:11:25,032 INFO L130 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2022-07-19 21:11:25,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 94 events. 6/94 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 102 event pairs, 0 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 223. Up to 8 conditions per place. [2022-07-19 21:11:25,033 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2022-07-19 21:11:25,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 78 transitions, 380 flow [2022-07-19 21:11:25,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:11:25,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:11:25,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 579 transitions. [2022-07-19 21:11:25,034 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7866847826086957 [2022-07-19 21:11:25,035 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 579 transitions. [2022-07-19 21:11:25,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 579 transitions. [2022-07-19 21:11:25,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:11:25,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 579 transitions. [2022-07-19 21:11:25,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.375) internal successors, (579), 8 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:25,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:25,038 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:25,038 INFO L186 Difference]: Start difference. First operand has 141 places, 79 transitions, 346 flow. Second operand 8 states and 579 transitions. [2022-07-19 21:11:25,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 78 transitions, 380 flow [2022-07-19 21:11:25,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 78 transitions, 248 flow, removed 15 selfloop flow, removed 33 redundant places. [2022-07-19 21:11:25,040 INFO L242 Difference]: Finished difference. Result has 95 places, 0 transitions, 0 flow [2022-07-19 21:11:25,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=95, PETRI_TRANSITIONS=0} [2022-07-19 21:11:25,041 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 11 predicate places. [2022-07-19 21:11:25,041 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 0 transitions, 0 flow [2022-07-19 21:11:25,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.25) internal successors, (578), 8 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:11:25,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-19 21:11:25,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-19 21:11:25,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-19 21:11:25,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-19 21:11:25,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:11:25,045 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:11:25,048 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:11:25,048 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:11:25,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:11:25 BasicIcfg [2022-07-19 21:11:25,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:11:25,053 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:11:25,053 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:11:25,053 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:11:25,054 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:20" (3/4) ... [2022-07-19 21:11:25,056 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:11:25,061 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-19 21:11:25,061 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-19 21:11:25,061 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-19 21:11:25,065 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-07-19 21:11:25,065 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-19 21:11:25,065 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:11:25,065 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:11:25,091 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:11:25,091 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:11:25,091 INFO L158 Benchmark]: Toolchain (without parser) took 5673.60ms. Allocated memory was 104.9MB in the beginning and 151.0MB in the end (delta: 46.1MB). Free memory was 64.7MB in the beginning and 83.5MB in the end (delta: -18.8MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2022-07-19 21:11:25,092 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 104.9MB. Free memory is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:11:25,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.55ms. Allocated memory is still 104.9MB. Free memory was 64.5MB in the beginning and 69.9MB in the end (delta: -5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-19 21:11:25,092 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.53ms. Allocated memory is still 104.9MB. Free memory was 69.9MB in the beginning and 67.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:11:25,093 INFO L158 Benchmark]: Boogie Preprocessor took 49.06ms. Allocated memory is still 104.9MB. Free memory was 67.8MB in the beginning and 66.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:11:25,093 INFO L158 Benchmark]: RCFGBuilder took 364.79ms. Allocated memory is still 104.9MB. Free memory was 66.2MB in the beginning and 53.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 21:11:25,093 INFO L158 Benchmark]: TraceAbstraction took 4701.26ms. Allocated memory was 104.9MB in the beginning and 151.0MB in the end (delta: 46.1MB). Free memory was 53.1MB in the beginning and 85.6MB in the end (delta: -32.5MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2022-07-19 21:11:25,093 INFO L158 Benchmark]: Witness Printer took 38.20ms. Allocated memory is still 151.0MB. Free memory was 85.6MB in the beginning and 83.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:11:25,095 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 104.9MB. Free memory is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 454.55ms. Allocated memory is still 104.9MB. Free memory was 64.5MB in the beginning and 69.9MB in the end (delta: -5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.53ms. Allocated memory is still 104.9MB. Free memory was 69.9MB in the beginning and 67.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.06ms. Allocated memory is still 104.9MB. Free memory was 67.8MB in the beginning and 66.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 364.79ms. Allocated memory is still 104.9MB. Free memory was 66.2MB in the beginning and 53.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4701.26ms. Allocated memory was 104.9MB in the beginning and 151.0MB in the end (delta: 46.1MB). Free memory was 53.1MB in the beginning and 85.6MB in the end (delta: -32.5MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * Witness Printer took 38.20ms. Allocated memory is still 151.0MB. Free memory was 85.6MB in the beginning and 83.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 115 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: 4.6s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 430 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 430 mSDsluCounter, 680 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 670 mSDsCounter, 117 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 729 IncrementalHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 117 mSolverCounterUnsat, 156 mSDtfsCounter, 729 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=738occurred in iteration=8, InterpolantAutomatonStates: 127, 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, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 676 NumberOfCodeBlocks, 676 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 665 ConstructedInterpolants, 0 QuantifiedInterpolants, 3373 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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! [2022-07-19 21:11:25,130 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