./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-lit/sssc12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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-lit/sssc12.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 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:27:32,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:27:32,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:27:32,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:27:32,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:27:32,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:27:32,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:27:32,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:27:32,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:27:32,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:27:32,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:27:32,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:27:32,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:27:32,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:27:32,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:27:32,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:27:32,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:27:32,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:27:32,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:27:32,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:27:32,354 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:27:32,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:27:32,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:27:32,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:27:32,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:27:32,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:27:32,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:27:32,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:27:32,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:27:32,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:27:32,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:27:32,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:27:32,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:27:32,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:27:32,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:27:32,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:27:32,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:27:32,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:27:32,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:27:32,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:27:32,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:27:32,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:27:32,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:27:32,412 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:27:32,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:27:32,413 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:27:32,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:27:32,414 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:27:32,415 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:27:32,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:27:32,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:27:32,416 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:27:32,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:27:32,417 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:27:32,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:27:32,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:27:32,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:27:32,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:27:32,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:27:32,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:27:32,418 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:27:32,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:27:32,420 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:27:32,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:27:32,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:27:32,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:27:32,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:27:32,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:27:32,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:27:32,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:27:32,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:27:32,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:27:32,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:27:32,422 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:27:32,422 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:27:32,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:27:32,422 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 [2022-07-22 21:27:32,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:27:32,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:27:32,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:27:32,692 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:27:32,692 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:27:32,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/sssc12.i [2022-07-22 21:27:32,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/336e1e250/f27bb6871f4b4bcdbe223a3139f0b021/FLAGa9502a481 [2022-07-22 21:27:33,266 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:27:33,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/sssc12.i [2022-07-22 21:27:33,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/336e1e250/f27bb6871f4b4bcdbe223a3139f0b021/FLAGa9502a481 [2022-07-22 21:27:33,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/336e1e250/f27bb6871f4b4bcdbe223a3139f0b021 [2022-07-22 21:27:33,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:27:33,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:27:33,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:27:33,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:27:33,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:27:33,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:27:33" (1/1) ... [2022-07-22 21:27:33,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@143f5452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:33, skipping insertion in model container [2022-07-22 21:27:33,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:27:33" (1/1) ... [2022-07-22 21:27:33,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:27:33,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:27:34,206 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-lit/sssc12.i[46865,46878] [2022-07-22 21:27:34,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:27:34,235 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:27:34,288 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-lit/sssc12.i[46865,46878] [2022-07-22 21:27:34,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:27:34,345 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:27:34,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:34 WrapperNode [2022-07-22 21:27:34,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:27:34,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:27:34,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:27:34,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:27:34,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:34" (1/1) ... [2022-07-22 21:27:34,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:34" (1/1) ... [2022-07-22 21:27:34,402 INFO L137 Inliner]: procedures = 275, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 82 [2022-07-22 21:27:34,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:27:34,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:27:34,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:27:34,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:27:34,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:34" (1/1) ... [2022-07-22 21:27:34,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:34" (1/1) ... [2022-07-22 21:27:34,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:34" (1/1) ... [2022-07-22 21:27:34,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:34" (1/1) ... [2022-07-22 21:27:34,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:34" (1/1) ... [2022-07-22 21:27:34,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:34" (1/1) ... [2022-07-22 21:27:34,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:34" (1/1) ... [2022-07-22 21:27:34,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:27:34,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:27:34,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:27:34,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:27:34,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:34" (1/1) ... [2022-07-22 21:27:34,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:27:34,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:27:34,474 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) [2022-07-22 21:27:34,477 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 [2022-07-22 21:27:34,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:27:34,508 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2022-07-22 21:27:34,508 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2022-07-22 21:27:34,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:27:34,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:27:34,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:27:34,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:27:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 21:27:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:27:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:27:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:27:34,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:27:34,511 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:27:34,598 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:27:34,600 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:27:34,828 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:27:34,852 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:27:34,852 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 21:27:34,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:27:34 BoogieIcfgContainer [2022-07-22 21:27:34,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:27:34,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:27:34,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:27:34,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:27:34,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:27:33" (1/3) ... [2022-07-22 21:27:34,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691cf10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:27:34, skipping insertion in model container [2022-07-22 21:27:34,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:34" (2/3) ... [2022-07-22 21:27:34,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691cf10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:27:34, skipping insertion in model container [2022-07-22 21:27:34,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:27:34" (3/3) ... [2022-07-22 21:27:34,880 INFO L111 eAbstractionObserver]: Analyzing ICFG sssc12.i [2022-07-22 21:27:34,884 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:27:34,908 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:27:34,908 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:27:34,908 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:27:34,973 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:27:35,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 82 transitions, 169 flow [2022-07-22 21:27:35,076 INFO L129 PetriNetUnfolder]: 7/94 cut-off events. [2022-07-22 21:27:35,076 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:27:35,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 94 events. 7/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 78 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 47. Up to 4 conditions per place. [2022-07-22 21:27:35,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 82 transitions, 169 flow [2022-07-22 21:27:35,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 82 transitions, 169 flow [2022-07-22 21:27:35,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:27:35,110 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@41d65f2c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6d71dccc [2022-07-22 21:27:35,111 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-22 21:27:35,130 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2022-07-22 21:27:35,130 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:27:35,131 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:35,132 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:27:35,132 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:27:35,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:35,138 INFO L85 PathProgramCache]: Analyzing trace with hash -2038037136, now seen corresponding path program 1 times [2022-07-22 21:27:35,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:35,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568399223] [2022-07-22 21:27:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:35,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:27:35,318 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:27:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:27:35,371 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:27:35,373 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:27:35,374 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-07-22 21:27:35,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-07-22 21:27:35,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-07-22 21:27:35,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:27:35,378 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-22 21:27:35,383 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:27:35,383 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-22 21:27:35,422 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:27:35,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 111 places, 116 transitions, 244 flow [2022-07-22 21:27:35,476 INFO L129 PetriNetUnfolder]: 12/142 cut-off events. [2022-07-22 21:27:35,477 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:27:35,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 142 events. 12/142 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 253 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 95. Up to 6 conditions per place. [2022-07-22 21:27:35,480 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 116 transitions, 244 flow [2022-07-22 21:27:35,483 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 116 transitions, 244 flow [2022-07-22 21:27:35,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:27:35,487 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@41d65f2c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6d71dccc [2022-07-22 21:27:35,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 21:27:35,512 INFO L129 PetriNetUnfolder]: 6/101 cut-off events. [2022-07-22 21:27:35,512 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:27:35,512 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:35,513 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:27:35,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-22 21:27:35,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:35,514 INFO L85 PathProgramCache]: Analyzing trace with hash 45538975, now seen corresponding path program 1 times [2022-07-22 21:27:35,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:35,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734428283] [2022-07-22 21:27:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:35,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:27:35,579 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:27:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:27:35,632 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:27:35,634 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:27:35,635 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-22 21:27:35,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-22 21:27:35,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-07-22 21:27:35,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-22 21:27:35,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:27:35,637 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-22 21:27:35,641 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:27:35,645 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-22 21:27:35,698 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:27:35,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 143 places, 150 transitions, 321 flow [2022-07-22 21:27:35,744 INFO L129 PetriNetUnfolder]: 17/190 cut-off events. [2022-07-22 21:27:35,745 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-22 21:27:35,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 190 events. 17/190 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 442 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 146. Up to 8 conditions per place. [2022-07-22 21:27:35,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 150 transitions, 321 flow [2022-07-22 21:27:35,754 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 150 transitions, 321 flow [2022-07-22 21:27:35,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:27:35,760 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@41d65f2c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6d71dccc [2022-07-22 21:27:35,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-22 21:27:35,781 INFO L129 PetriNetUnfolder]: 9/134 cut-off events. [2022-07-22 21:27:35,781 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-22 21:27:35,781 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:35,782 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] [2022-07-22 21:27:35,783 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 21:27:35,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:35,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1613414299, now seen corresponding path program 1 times [2022-07-22 21:27:35,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:35,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032197163] [2022-07-22 21:27:35,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:35,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:35,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:35,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032197163] [2022-07-22 21:27:35,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032197163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:35,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:35,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:27:35,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538675130] [2022-07-22 21:27:35,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:35,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:27:35,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:36,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:27:36,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:27:36,009 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 150 [2022-07-22 21:27:36,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 150 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 119.25) internal successors, (477), 4 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:36,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:36,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 150 [2022-07-22 21:27:36,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:36,320 INFO L129 PetriNetUnfolder]: 372/1535 cut-off events. [2022-07-22 21:27:36,320 INFO L130 PetriNetUnfolder]: For 340/340 co-relation queries the response was YES. [2022-07-22 21:27:36,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2301 conditions, 1535 events. 372/1535 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11818 event pairs, 193 based on Foata normal form. 447/1822 useless extension candidates. Maximal degree in co-relation 1582. Up to 362 conditions per place. [2022-07-22 21:27:36,343 INFO L132 encePairwiseOnDemand]: 137/150 looper letters, 32 selfloop transitions, 3 changer transitions 1/146 dead transitions. [2022-07-22 21:27:36,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 146 transitions, 407 flow [2022-07-22 21:27:36,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:27:36,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:27:36,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 526 transitions. [2022-07-22 21:27:36,362 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8766666666666667 [2022-07-22 21:27:36,363 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 526 transitions. [2022-07-22 21:27:36,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 526 transitions. [2022-07-22 21:27:36,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:36,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 526 transitions. [2022-07-22 21:27:36,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 131.5) internal successors, (526), 4 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:36,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:36,412 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:36,414 INFO L186 Difference]: Start difference. First operand has 143 places, 150 transitions, 321 flow. Second operand 4 states and 526 transitions. [2022-07-22 21:27:36,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 146 transitions, 407 flow [2022-07-22 21:27:36,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 146 transitions, 397 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-07-22 21:27:36,423 INFO L242 Difference]: Finished difference. Result has 137 places, 131 transitions, 287 flow [2022-07-22 21:27:36,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=287, PETRI_PLACES=137, PETRI_TRANSITIONS=131} [2022-07-22 21:27:36,428 INFO L279 CegarLoopForPetriNet]: 143 programPoint places, -6 predicate places. [2022-07-22 21:27:36,429 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 131 transitions, 287 flow [2022-07-22 21:27:36,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.25) internal successors, (477), 4 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:36,430 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:36,431 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:27:36,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:27:36,431 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 21:27:36,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1301607399, now seen corresponding path program 1 times [2022-07-22 21:27:36,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:36,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105702850] [2022-07-22 21:27:36,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:36,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:27:36,491 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:27:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:27:36,521 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:27:36,525 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:27:36,526 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-22 21:27:36,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-22 21:27:36,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-07-22 21:27:36,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-22 21:27:36,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-22 21:27:36,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:27:36,527 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 21:27:36,529 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:27:36,529 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-22 21:27:36,563 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:27:36,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 175 places, 184 transitions, 400 flow [2022-07-22 21:27:36,593 INFO L129 PetriNetUnfolder]: 22/238 cut-off events. [2022-07-22 21:27:36,594 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-22 21:27:36,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 238 events. 22/238 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 638 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 198. Up to 10 conditions per place. [2022-07-22 21:27:36,597 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 184 transitions, 400 flow [2022-07-22 21:27:36,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 184 transitions, 400 flow [2022-07-22 21:27:36,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:27:36,601 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@41d65f2c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6d71dccc [2022-07-22 21:27:36,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-22 21:27:36,611 INFO L129 PetriNetUnfolder]: 9/135 cut-off events. [2022-07-22 21:27:36,611 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-22 21:27:36,612 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:36,612 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] [2022-07-22 21:27:36,612 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:27:36,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:36,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1522313636, now seen corresponding path program 1 times [2022-07-22 21:27:36,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:36,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227228827] [2022-07-22 21:27:36,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:36,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:36,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:36,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227228827] [2022-07-22 21:27:36,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227228827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:36,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:36,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:27:36,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925520632] [2022-07-22 21:27:36,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:36,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:27:36,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:36,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:27:36,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:27:36,674 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 184 [2022-07-22 21:27:36,675 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 184 transitions, 400 flow. Second operand has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:36,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:36,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 184 [2022-07-22 21:27:36,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:37,998 INFO L129 PetriNetUnfolder]: 1890/7960 cut-off events. [2022-07-22 21:27:37,999 INFO L130 PetriNetUnfolder]: For 1861/1861 co-relation queries the response was YES. [2022-07-22 21:27:38,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11030 conditions, 7960 events. 1890/7960 cut-off events. For 1861/1861 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 87876 event pairs, 1192 based on Foata normal form. 1746/8795 useless extension candidates. Maximal degree in co-relation 3675. Up to 1452 conditions per place. [2022-07-22 21:27:38,121 INFO L132 encePairwiseOnDemand]: 169/184 looper letters, 41 selfloop transitions, 3 changer transitions 1/183 dead transitions. [2022-07-22 21:27:38,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 183 transitions, 528 flow [2022-07-22 21:27:38,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:27:38,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:27:38,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 653 transitions. [2022-07-22 21:27:38,125 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8872282608695652 [2022-07-22 21:27:38,125 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 653 transitions. [2022-07-22 21:27:38,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 653 transitions. [2022-07-22 21:27:38,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:38,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 653 transitions. [2022-07-22 21:27:38,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:38,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 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) [2022-07-22 21:27:38,129 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 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) [2022-07-22 21:27:38,129 INFO L186 Difference]: Start difference. First operand has 175 places, 184 transitions, 400 flow. Second operand 4 states and 653 transitions. [2022-07-22 21:27:38,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 183 transitions, 528 flow [2022-07-22 21:27:38,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 183 transitions, 504 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-07-22 21:27:38,135 INFO L242 Difference]: Finished difference. Result has 168 places, 162 transitions, 354 flow [2022-07-22 21:27:38,136 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=354, PETRI_PLACES=168, PETRI_TRANSITIONS=162} [2022-07-22 21:27:38,136 INFO L279 CegarLoopForPetriNet]: 175 programPoint places, -7 predicate places. [2022-07-22 21:27:38,136 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 162 transitions, 354 flow [2022-07-22 21:27:38,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:38,137 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:38,137 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] [2022-07-22 21:27:38,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:27:38,138 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:27:38,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:38,138 INFO L85 PathProgramCache]: Analyzing trace with hash -945135595, now seen corresponding path program 1 times [2022-07-22 21:27:38,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:38,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001363649] [2022-07-22 21:27:38,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:38,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:38,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:38,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:38,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001363649] [2022-07-22 21:27:38,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001363649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:38,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:38,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:27:38,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999729678] [2022-07-22 21:27:38,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:38,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:27:38,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:38,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:27:38,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:27:38,267 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 184 [2022-07-22 21:27:38,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 162 transitions, 354 flow. Second operand has 8 states, 8 states have (on average 119.5) internal successors, (956), 8 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:38,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:38,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 184 [2022-07-22 21:27:38,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:54,367 INFO L129 PetriNetUnfolder]: 85323/157903 cut-off events. [2022-07-22 21:27:54,367 INFO L130 PetriNetUnfolder]: For 13381/13381 co-relation queries the response was YES. [2022-07-22 21:27:55,538 INFO L84 FinitePrefix]: Finished finitePrefix Result has 287877 conditions, 157903 events. 85323/157903 cut-off events. For 13381/13381 co-relation queries the response was YES. Maximal size of possible extension queue 6052. Compared 1863193 event pairs, 7373 based on Foata normal form. 0/143627 useless extension candidates. Maximal degree in co-relation 287572. Up to 33498 conditions per place. [2022-07-22 21:27:56,946 INFO L132 encePairwiseOnDemand]: 163/184 looper letters, 273 selfloop transitions, 21 changer transitions 0/404 dead transitions. [2022-07-22 21:27:56,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 404 transitions, 1565 flow [2022-07-22 21:27:56,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:27:56,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:27:56,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1473 transitions. [2022-07-22 21:27:56,950 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8005434782608696 [2022-07-22 21:27:56,950 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1473 transitions. [2022-07-22 21:27:56,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1473 transitions. [2022-07-22 21:27:56,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:56,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1473 transitions. [2022-07-22 21:27:56,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 147.3) internal successors, (1473), 10 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:56,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 184.0) internal successors, (2024), 11 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:56,960 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 184.0) internal successors, (2024), 11 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:56,960 INFO L186 Difference]: Start difference. First operand has 168 places, 162 transitions, 354 flow. Second operand 10 states and 1473 transitions. [2022-07-22 21:27:56,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 404 transitions, 1565 flow [2022-07-22 21:27:57,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 404 transitions, 1549 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-22 21:27:57,034 INFO L242 Difference]: Finished difference. Result has 182 places, 182 transitions, 532 flow [2022-07-22 21:27:57,035 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=532, PETRI_PLACES=182, PETRI_TRANSITIONS=182} [2022-07-22 21:27:57,035 INFO L279 CegarLoopForPetriNet]: 175 programPoint places, 7 predicate places. [2022-07-22 21:27:57,036 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 182 transitions, 532 flow [2022-07-22 21:27:57,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 119.5) internal successors, (956), 8 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:57,036 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:57,037 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:27:57,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:27:57,037 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:27:57,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:57,038 INFO L85 PathProgramCache]: Analyzing trace with hash -165539028, now seen corresponding path program 1 times [2022-07-22 21:27:57,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:57,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595503550] [2022-07-22 21:27:57,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:57,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 21:27:57,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:57,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595503550] [2022-07-22 21:27:57,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595503550] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:57,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:57,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:27:57,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435971507] [2022-07-22 21:27:57,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:57,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:27:57,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:57,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:27:57,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:27:57,081 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 184 [2022-07-22 21:27:57,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 182 transitions, 532 flow. Second operand has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:57,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:57,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 184 [2022-07-22 21:27:57,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:59,706 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([735] L1028-1-->L1026-2: Formula: (= v_~next~0_6 |v_thrThread2of4ForFork0_~end~0#1_7|) InVars {thrThread2of4ForFork0_~end~0#1=|v_thrThread2of4ForFork0_~end~0#1_7|} OutVars{~next~0=v_~next~0_6, thrThread2of4ForFork0_~end~0#1=|v_thrThread2of4ForFork0_~end~0#1_7|} AuxVars[] AssignedVars[~next~0][143], [189#(and (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), Black: 195#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)) (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0)) (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), 63#L1026-2true, Black: 193#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0)) (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), Black: 186#(= ~next~0 0), thrThread1of4ForFork0InUse, Black: 191#(not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)), Black: 187#(and (<= (+ ~next~0 10) ~len~0) (= ~next~0 0)), thrThread2of4ForFork0InUse, Black: 184#true, thrThread3of4ForFork0InUse, Black: 188#(and (<= (+ ~next~0 10) ~len~0) (= ~next~0 0) (= |thrThread1of4ForFork0_~c~0#1| 0)), Black: 197#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)) (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0))), thrThread4of4ForFork0InUse, 208#true, 25#L1013true, 39#L1046-4true, Black: 181#(and (= |thrThread1of4ForFork0_~end~0#1| 0) (= |thrThread1of4ForFork0_~c~0#1| 0)), 128#L1026-2true, 92#L1028true]) [2022-07-22 21:27:59,706 INFO L384 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-07-22 21:27:59,706 INFO L387 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-07-22 21:27:59,706 INFO L387 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-07-22 21:27:59,706 INFO L387 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-07-22 21:28:00,134 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([800] L1016-->L1019: Formula: (and (= v_~lock~0_29 0) (= |v_thrThread4of4ForFork0_assume_abort_if_not_#in~cond#1_3| |v_thrThread4of4ForFork0_assume_abort_if_not_~cond#1_3|) (= |v_thrThread4of4ForFork0_assume_abort_if_not_#in~cond#1_3| (ite (= v_~lock~0_30 1) 1 0)) (not (= 0 |v_thrThread4of4ForFork0_assume_abort_if_not_~cond#1_3|))) InVars {~lock~0=v_~lock~0_30} OutVars{thrThread4of4ForFork0_assume_abort_if_not_#in~cond#1=|v_thrThread4of4ForFork0_assume_abort_if_not_#in~cond#1_3|, ~lock~0=v_~lock~0_29, thrThread4of4ForFork0_assume_abort_if_not_~cond#1=|v_thrThread4of4ForFork0_assume_abort_if_not_~cond#1_3|} AuxVars[] AssignedVars[thrThread4of4ForFork0_assume_abort_if_not_#in~cond#1, ~lock~0, thrThread4of4ForFork0_assume_abort_if_not_~cond#1][167], [30#L1019true, 189#(and (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), 3#L1028-1true, Black: 195#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)) (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0)) (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), Black: 193#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0)) (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), Black: 186#(= ~next~0 0), thrThread1of4ForFork0InUse, Black: 191#(not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)), Black: 187#(and (<= (+ ~next~0 10) ~len~0) (= ~next~0 0)), thrThread2of4ForFork0InUse, Black: 184#true, thrThread3of4ForFork0InUse, Black: 188#(and (<= (+ ~next~0 10) ~len~0) (= ~next~0 0) (= |thrThread1of4ForFork0_~c~0#1| 0)), Black: 197#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)) (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0))), thrThread4of4ForFork0InUse, 208#true, 25#L1013true, 39#L1046-4true, Black: 181#(and (= |thrThread1of4ForFork0_~end~0#1| 0) (= |thrThread1of4ForFork0_~c~0#1| 0)), 92#L1028true]) [2022-07-22 21:28:00,134 INFO L384 tUnfolder$Statistics]: this new event has 99 ancestors and is cut-off event [2022-07-22 21:28:00,134 INFO L387 tUnfolder$Statistics]: existing Event has 99 ancestors and is cut-off event [2022-07-22 21:28:00,134 INFO L387 tUnfolder$Statistics]: existing Event has 99 ancestors and is cut-off event [2022-07-22 21:28:00,134 INFO L387 tUnfolder$Statistics]: existing Event has 99 ancestors and is cut-off event [2022-07-22 21:28:00,284 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([735] L1028-1-->L1026-2: Formula: (= v_~next~0_6 |v_thrThread2of4ForFork0_~end~0#1_7|) InVars {thrThread2of4ForFork0_~end~0#1=|v_thrThread2of4ForFork0_~end~0#1_7|} OutVars{~next~0=v_~next~0_6, thrThread2of4ForFork0_~end~0#1=|v_thrThread2of4ForFork0_~end~0#1_7|} AuxVars[] AssignedVars[~next~0][143], [189#(and (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), 63#L1026-2true, Black: 195#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)) (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0)) (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), Black: 193#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0)) (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), Black: 186#(= ~next~0 0), 100#L1026-2true, thrThread1of4ForFork0InUse, Black: 191#(not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)), Black: 187#(and (<= (+ ~next~0 10) ~len~0) (= ~next~0 0)), thrThread2of4ForFork0InUse, Black: 184#true, thrThread3of4ForFork0InUse, Black: 188#(and (<= (+ ~next~0 10) ~len~0) (= ~next~0 0) (= |thrThread1of4ForFork0_~c~0#1| 0)), Black: 197#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)) (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0))), thrThread4of4ForFork0InUse, 208#true, 25#L1013true, 39#L1046-4true, Black: 181#(and (= |thrThread1of4ForFork0_~end~0#1| 0) (= |thrThread1of4ForFork0_~c~0#1| 0)), 128#L1026-2true]) [2022-07-22 21:28:00,285 INFO L384 tUnfolder$Statistics]: this new event has 100 ancestors and is cut-off event [2022-07-22 21:28:00,285 INFO L387 tUnfolder$Statistics]: existing Event has 97 ancestors and is cut-off event [2022-07-22 21:28:00,285 INFO L387 tUnfolder$Statistics]: existing Event has 97 ancestors and is cut-off event [2022-07-22 21:28:00,285 INFO L387 tUnfolder$Statistics]: existing Event has 97 ancestors and is cut-off event [2022-07-22 21:28:02,445 INFO L129 PetriNetUnfolder]: 12614/46435 cut-off events. [2022-07-22 21:28:02,446 INFO L130 PetriNetUnfolder]: For 7857/10325 co-relation queries the response was YES. [2022-07-22 21:28:02,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74751 conditions, 46435 events. 12614/46435 cut-off events. For 7857/10325 co-relation queries the response was YES. Maximal size of possible extension queue 2005. Compared 680615 event pairs, 6048 based on Foata normal form. 77/40847 useless extension candidates. Maximal degree in co-relation 74586. Up to 8662 conditions per place. [2022-07-22 21:28:03,194 INFO L132 encePairwiseOnDemand]: 180/184 looper letters, 41 selfloop transitions, 3 changer transitions 0/200 dead transitions. [2022-07-22 21:28:03,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 200 transitions, 676 flow [2022-07-22 21:28:03,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:28:03,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:28:03,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2022-07-22 21:28:03,197 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8464673913043478 [2022-07-22 21:28:03,197 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2022-07-22 21:28:03,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2022-07-22 21:28:03,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:03,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2022-07-22 21:28:03,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:03,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 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) [2022-07-22 21:28:03,203 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 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) [2022-07-22 21:28:03,203 INFO L186 Difference]: Start difference. First operand has 182 places, 182 transitions, 532 flow. Second operand 4 states and 623 transitions. [2022-07-22 21:28:03,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 200 transitions, 676 flow [2022-07-22 21:28:03,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 200 transitions, 676 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:28:03,327 INFO L242 Difference]: Finished difference. Result has 186 places, 182 transitions, 542 flow [2022-07-22 21:28:03,328 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=542, PETRI_PLACES=186, PETRI_TRANSITIONS=182} [2022-07-22 21:28:03,329 INFO L279 CegarLoopForPetriNet]: 175 programPoint places, 11 predicate places. [2022-07-22 21:28:03,329 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 182 transitions, 542 flow [2022-07-22 21:28:03,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:03,329 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:03,330 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:03,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:28:03,330 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:28:03,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:03,330 INFO L85 PathProgramCache]: Analyzing trace with hash -377843776, now seen corresponding path program 1 times [2022-07-22 21:28:03,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:03,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376411338] [2022-07-22 21:28:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:03,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:28:03,383 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:28:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:28:03,399 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:28:03,399 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:28:03,400 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-07-22 21:28:03,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-22 21:28:03,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-07-22 21:28:03,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-07-22 21:28:03,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-22 21:28:03,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-22 21:28:03,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:28:03,401 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-07-22 21:28:03,402 WARN L231 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:28:03,402 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-07-22 21:28:03,428 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:28:03,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 207 places, 218 transitions, 481 flow [2022-07-22 21:28:03,473 INFO L129 PetriNetUnfolder]: 27/286 cut-off events. [2022-07-22 21:28:03,474 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-22 21:28:03,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 286 events. 27/286 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 834 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 251. Up to 12 conditions per place. [2022-07-22 21:28:03,478 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 218 transitions, 481 flow [2022-07-22 21:28:03,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 218 transitions, 481 flow [2022-07-22 21:28:03,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:28:03,483 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@41d65f2c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6d71dccc [2022-07-22 21:28:03,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-22 21:28:03,492 INFO L129 PetriNetUnfolder]: 9/135 cut-off events. [2022-07-22 21:28:03,492 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-22 21:28:03,492 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:03,492 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] [2022-07-22 21:28:03,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:28:03,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:03,493 INFO L85 PathProgramCache]: Analyzing trace with hash -875921481, now seen corresponding path program 1 times [2022-07-22 21:28:03,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:03,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424805752] [2022-07-22 21:28:03,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:03,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:03,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:03,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:03,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424805752] [2022-07-22 21:28:03,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424805752] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:03,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:03,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:28:03,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152103993] [2022-07-22 21:28:03,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:03,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:28:03,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:03,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:28:03,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:28:03,567 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 218 [2022-07-22 21:28:03,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 218 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:03,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:03,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 218 [2022-07-22 21:28:03,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:06,371 INFO L129 PetriNetUnfolder]: 6825/22512 cut-off events. [2022-07-22 21:28:06,372 INFO L130 PetriNetUnfolder]: For 8687/8687 co-relation queries the response was YES. [2022-07-22 21:28:06,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33877 conditions, 22512 events. 6825/22512 cut-off events. For 8687/8687 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 273603 event pairs, 3732 based on Foata normal form. 6699/26927 useless extension candidates. Maximal degree in co-relation 20926. Up to 5401 conditions per place. [2022-07-22 21:28:06,828 INFO L132 encePairwiseOnDemand]: 201/218 looper letters, 50 selfloop transitions, 3 changer transitions 1/220 dead transitions. [2022-07-22 21:28:06,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 220 transitions, 655 flow [2022-07-22 21:28:06,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:28:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:28:06,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 780 transitions. [2022-07-22 21:28:06,841 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8944954128440367 [2022-07-22 21:28:06,841 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 780 transitions. [2022-07-22 21:28:06,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 780 transitions. [2022-07-22 21:28:06,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:06,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 780 transitions. [2022-07-22 21:28:06,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:06,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:06,845 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:06,845 INFO L186 Difference]: Start difference. First operand has 207 places, 218 transitions, 481 flow. Second operand 4 states and 780 transitions. [2022-07-22 21:28:06,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 220 transitions, 655 flow [2022-07-22 21:28:06,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 220 transitions, 611 flow, removed 22 selfloop flow, removed 0 redundant places. [2022-07-22 21:28:06,856 INFO L242 Difference]: Finished difference. Result has 199 places, 193 transitions, 421 flow [2022-07-22 21:28:06,857 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=421, PETRI_PLACES=199, PETRI_TRANSITIONS=193} [2022-07-22 21:28:06,858 INFO L279 CegarLoopForPetriNet]: 207 programPoint places, -8 predicate places. [2022-07-22 21:28:06,858 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 193 transitions, 421 flow [2022-07-22 21:28:06,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:06,858 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:06,859 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] [2022-07-22 21:28:06,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:28:06,859 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 21:28:06,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:06,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1385448054, now seen corresponding path program 1 times [2022-07-22 21:28:06,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:06,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810877719] [2022-07-22 21:28:06,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:06,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:07,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:07,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:07,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810877719] [2022-07-22 21:28:07,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810877719] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:07,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:07,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:28:07,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667941497] [2022-07-22 21:28:07,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:07,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:28:07,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:07,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:28:07,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:28:07,027 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 218 [2022-07-22 21:28:07,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 193 transitions, 421 flow. Second operand has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:07,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:07,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 218 [2022-07-22 21:28:07,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand