./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-lit/fkp2013-1.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/fkp2013-1.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 ac100ce7c66b3266dc643fb77471441d693f59fe8c56e13ccaa684a73cdda8b0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:27:23,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:27:23,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:27:23,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:27:23,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:27:23,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:27:23,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:27:23,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:27:23,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:27:23,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:27:23,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:27:23,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:27:23,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:27:23,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:27:23,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:27:23,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:27:23,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:27:23,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:27:23,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:27:23,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:27:23,231 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:27:23,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:27:23,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:27:23,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:27:23,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:27:23,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:27:23,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:27:23,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:27:23,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:27:23,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:27:23,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:27:23,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:27:23,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:27:23,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:27:23,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:27:23,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:27:23,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:27:23,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:27:23,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:27:23,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:27:23,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:27:23,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:27:23,250 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:27:23,274 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:27:23,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:27:23,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:27:23,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:27:23,276 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:27:23,276 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:27:23,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:27:23,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:27:23,277 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:27:23,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:27:23,278 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:27:23,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:27:23,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:27:23,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:27:23,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:27:23,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:27:23,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:27:23,279 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:27:23,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:27:23,279 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:27:23,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:27:23,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:27:23,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:27:23,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:27:23,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:27:23,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:27:23,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:27:23,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:27:23,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:27:23,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:27:23,281 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:27:23,281 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:27:23,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:27:23,282 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac100ce7c66b3266dc643fb77471441d693f59fe8c56e13ccaa684a73cdda8b0 [2022-07-22 21:27:23,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:27:23,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:27:23,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:27:23,510 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:27:23,510 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:27:23,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/fkp2013-1.i [2022-07-22 21:27:23,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d54e0e80/a1eaee8ba6994fc0a91b6169ebd2bd11/FLAG4c0255af8 [2022-07-22 21:27:23,976 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:27:23,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/fkp2013-1.i [2022-07-22 21:27:24,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d54e0e80/a1eaee8ba6994fc0a91b6169ebd2bd11/FLAG4c0255af8 [2022-07-22 21:27:24,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d54e0e80/a1eaee8ba6994fc0a91b6169ebd2bd11 [2022-07-22 21:27:24,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:27:24,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:27:24,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:27:24,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:27:24,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:27:24,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:27:24" (1/1) ... [2022-07-22 21:27:24,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6796c130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:24, skipping insertion in model container [2022-07-22 21:27:24,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:27:24" (1/1) ... [2022-07-22 21:27:24,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:27:24,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:27:24,337 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/fkp2013-1.i[30003,30016] [2022-07-22 21:27:24,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:27:24,361 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:27:24,409 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/fkp2013-1.i[30003,30016] [2022-07-22 21:27:24,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:27:24,434 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:27:24,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:24 WrapperNode [2022-07-22 21:27:24,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:27:24,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:27:24,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:27:24,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:27:24,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:24" (1/1) ... [2022-07-22 21:27:24,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:24" (1/1) ... [2022-07-22 21:27:24,478 INFO L137 Inliner]: procedures = 172, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2022-07-22 21:27:24,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:27:24,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:27:24,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:27:24,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:27:24,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:24" (1/1) ... [2022-07-22 21:27:24,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:24" (1/1) ... [2022-07-22 21:27:24,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:24" (1/1) ... [2022-07-22 21:27:24,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:24" (1/1) ... [2022-07-22 21:27:24,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:24" (1/1) ... [2022-07-22 21:27:24,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:24" (1/1) ... [2022-07-22 21:27:24,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:24" (1/1) ... [2022-07-22 21:27:24,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:27:24,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:27:24,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:27:24,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:27:24,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:24" (1/1) ... [2022-07-22 21:27:24,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:27:24,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:27:24,537 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 21:27:24,539 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 21:27:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-07-22 21:27:24,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-07-22 21:27:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-22 21:27:24,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-22 21:27:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:27:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:27:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:27:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:27:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:27:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:27:24,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:27:24,563 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 21:27:24,679 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:27:24,680 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:27:24,871 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:27:24,885 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:27:24,885 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 21:27:24,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:27:24 BoogieIcfgContainer [2022-07-22 21:27:24,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:27:24,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:27:24,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:27:24,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:27:24,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:27:24" (1/3) ... [2022-07-22 21:27:24,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b36a876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:27:24, skipping insertion in model container [2022-07-22 21:27:24,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:24" (2/3) ... [2022-07-22 21:27:24,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b36a876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:27:24, skipping insertion in model container [2022-07-22 21:27:24,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:27:24" (3/3) ... [2022-07-22 21:27:24,893 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013-1.i [2022-07-22 21:27:24,896 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:27:24,917 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:27:24,918 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:27:24,918 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:27:24,950 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:27:24,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 68 transitions, 146 flow [2022-07-22 21:27:24,995 INFO L129 PetriNetUnfolder]: 3/81 cut-off events. [2022-07-22 21:27:24,995 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:27:24,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 81 events. 3/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2022-07-22 21:27:24,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 68 transitions, 146 flow [2022-07-22 21:27:25,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 67 transitions, 142 flow [2022-07-22 21:27:25,007 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:27:25,012 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@1515fbb2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7f5f327c [2022-07-22 21:27:25,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 21:27:25,019 INFO L129 PetriNetUnfolder]: 1/42 cut-off events. [2022-07-22 21:27:25,020 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:27:25,020 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:25,020 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] [2022-07-22 21:27:25,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:27:25,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:25,025 INFO L85 PathProgramCache]: Analyzing trace with hash 702214347, now seen corresponding path program 1 times [2022-07-22 21:27:25,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:25,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267198700] [2022-07-22 21:27:25,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:25,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:25,292 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 21:27:25,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:25,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267198700] [2022-07-22 21:27:25,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267198700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:25,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:25,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:27:25,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979256731] [2022-07-22 21:27:25,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:25,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:27:25,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:25,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:27:25,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:27:25,331 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 68 [2022-07-22 21:27:25,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 55.4) internal successors, (277), 5 states have internal predecessors, (277), 0 states have call successors, (0), 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 21:27:25,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:25,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 68 [2022-07-22 21:27:25,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:25,462 INFO L129 PetriNetUnfolder]: 11/142 cut-off events. [2022-07-22 21:27:25,462 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-22 21:27:25,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 142 events. 11/142 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 466 event pairs, 2 based on Foata normal form. 20/155 useless extension candidates. Maximal degree in co-relation 165. Up to 10 conditions per place. [2022-07-22 21:27:25,466 INFO L132 encePairwiseOnDemand]: 60/68 looper letters, 16 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2022-07-22 21:27:25,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 77 transitions, 216 flow [2022-07-22 21:27:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:27:25,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:27:25,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2022-07-22 21:27:25,481 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8566176470588235 [2022-07-22 21:27:25,482 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2022-07-22 21:27:25,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2022-07-22 21:27:25,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:25,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2022-07-22 21:27:25,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 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 21:27:25,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:25,500 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:25,502 INFO L186 Difference]: Start difference. First operand has 71 places, 67 transitions, 142 flow. Second operand 8 states and 466 transitions. [2022-07-22 21:27:25,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 77 transitions, 216 flow [2022-07-22 21:27:25,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 77 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:27:25,514 INFO L242 Difference]: Finished difference. Result has 80 places, 70 transitions, 183 flow [2022-07-22 21:27:25,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=183, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2022-07-22 21:27:25,518 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 9 predicate places. [2022-07-22 21:27:25,519 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 183 flow [2022-07-22 21:27:25,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.4) internal successors, (277), 5 states have internal predecessors, (277), 0 states have call successors, (0), 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 21:27:25,519 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:25,520 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] [2022-07-22 21:27:25,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:27:25,521 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:27:25,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:25,522 INFO L85 PathProgramCache]: Analyzing trace with hash 30111252, now seen corresponding path program 1 times [2022-07-22 21:27:25,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:25,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813257072] [2022-07-22 21:27:25,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:25,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:27:25,566 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:27:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:27:25,628 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:27:25,628 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:27:25,630 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-22 21:27:25,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-22 21:27:25,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-22 21:27:25,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-22 21:27:25,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:27:25,633 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 21:27:25,640 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:27:25,640 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-22 21:27:25,683 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:27:25,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 89 transitions, 202 flow [2022-07-22 21:27:25,694 INFO L129 PetriNetUnfolder]: 4/107 cut-off events. [2022-07-22 21:27:25,696 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:27:25,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 107 events. 4/107 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 143 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 116. Up to 6 conditions per place. [2022-07-22 21:27:25,698 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 89 transitions, 202 flow [2022-07-22 21:27:25,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 74 transitions, 163 flow [2022-07-22 21:27:25,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:27:25,701 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@1515fbb2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7f5f327c [2022-07-22 21:27:25,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-22 21:27:25,706 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2022-07-22 21:27:25,709 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:27:25,709 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:25,709 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] [2022-07-22 21:27:25,710 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:27:25,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:25,711 INFO L85 PathProgramCache]: Analyzing trace with hash -980089482, now seen corresponding path program 1 times [2022-07-22 21:27:25,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:25,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931531622] [2022-07-22 21:27:25,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:25,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:25,774 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 21:27:25,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:25,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931531622] [2022-07-22 21:27:25,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931531622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:25,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:25,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:27:25,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633255527] [2022-07-22 21:27:25,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:25,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:27:25,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:25,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:27:25,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:27:25,781 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-07-22 21:27:25,782 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 163 flow. Second operand has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 0 states have call successors, (0), 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 21:27:25,782 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:25,782 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-07-22 21:27:25,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:25,891 INFO L129 PetriNetUnfolder]: 97/386 cut-off events. [2022-07-22 21:27:25,891 INFO L130 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-07-22 21:27:25,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 659 conditions, 386 events. 97/386 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2105 event pairs, 6 based on Foata normal form. 95/459 useless extension candidates. Maximal degree in co-relation 625. Up to 55 conditions per place. [2022-07-22 21:27:25,895 INFO L132 encePairwiseOnDemand]: 80/89 looper letters, 42 selfloop transitions, 11 changer transitions 0/110 dead transitions. [2022-07-22 21:27:25,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 110 transitions, 377 flow [2022-07-22 21:27:25,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:27:25,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:27:25,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 607 transitions. [2022-07-22 21:27:25,897 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8525280898876404 [2022-07-22 21:27:25,897 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 607 transitions. [2022-07-22 21:27:25,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 607 transitions. [2022-07-22 21:27:25,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:25,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 607 transitions. [2022-07-22 21:27:25,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 75.875) internal successors, (607), 8 states have internal predecessors, (607), 0 states have call successors, (0), 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 21:27:25,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:25,901 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:25,901 INFO L186 Difference]: Start difference. First operand has 80 places, 74 transitions, 163 flow. Second operand 8 states and 607 transitions. [2022-07-22 21:27:25,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 110 transitions, 377 flow [2022-07-22 21:27:25,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 110 transitions, 374 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-22 21:27:25,904 INFO L242 Difference]: Finished difference. Result has 90 places, 81 transitions, 236 flow [2022-07-22 21:27:25,904 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=236, PETRI_PLACES=90, PETRI_TRANSITIONS=81} [2022-07-22 21:27:25,904 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 10 predicate places. [2022-07-22 21:27:25,905 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 81 transitions, 236 flow [2022-07-22 21:27:25,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 0 states have call successors, (0), 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 21:27:25,905 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:25,905 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] [2022-07-22 21:27:25,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:27:25,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:27:25,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:25,906 INFO L85 PathProgramCache]: Analyzing trace with hash 692131209, now seen corresponding path program 1 times [2022-07-22 21:27:25,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:25,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103453389] [2022-07-22 21:27:25,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:25,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:25,972 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 21:27:25,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:25,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103453389] [2022-07-22 21:27:25,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103453389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:25,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:25,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:27:25,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888099655] [2022-07-22 21:27:25,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:25,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:27:25,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:25,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:27:25,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:27:25,975 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 89 [2022-07-22 21:27:25,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 81 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 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 21:27:25,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:25,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 89 [2022-07-22 21:27:25,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:26,222 INFO L129 PetriNetUnfolder]: 131/767 cut-off events. [2022-07-22 21:27:26,222 INFO L130 PetriNetUnfolder]: For 342/342 co-relation queries the response was YES. [2022-07-22 21:27:26,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1439 conditions, 767 events. 131/767 cut-off events. For 342/342 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5643 event pairs, 20 based on Foata normal form. 5/739 useless extension candidates. Maximal degree in co-relation 1399. Up to 56 conditions per place. [2022-07-22 21:27:26,227 INFO L132 encePairwiseOnDemand]: 81/89 looper letters, 61 selfloop transitions, 33 changer transitions 0/150 dead transitions. [2022-07-22 21:27:26,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 150 transitions, 727 flow [2022-07-22 21:27:26,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:27:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:27:26,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1365 transitions. [2022-07-22 21:27:26,230 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8072146658781786 [2022-07-22 21:27:26,230 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1365 transitions. [2022-07-22 21:27:26,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1365 transitions. [2022-07-22 21:27:26,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:26,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1365 transitions. [2022-07-22 21:27:26,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 71.84210526315789) internal successors, (1365), 19 states have internal predecessors, (1365), 0 states have call successors, (0), 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 21:27:26,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 89.0) internal successors, (1780), 20 states have internal predecessors, (1780), 0 states have call successors, (0), 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 21:27:26,235 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 89.0) internal successors, (1780), 20 states have internal predecessors, (1780), 0 states have call successors, (0), 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 21:27:26,236 INFO L186 Difference]: Start difference. First operand has 90 places, 81 transitions, 236 flow. Second operand 19 states and 1365 transitions. [2022-07-22 21:27:26,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 150 transitions, 727 flow [2022-07-22 21:27:26,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 150 transitions, 727 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:27:26,240 INFO L242 Difference]: Finished difference. Result has 118 places, 104 transitions, 498 flow [2022-07-22 21:27:26,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=498, PETRI_PLACES=118, PETRI_TRANSITIONS=104} [2022-07-22 21:27:26,241 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 38 predicate places. [2022-07-22 21:27:26,241 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 104 transitions, 498 flow [2022-07-22 21:27:26,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 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 21:27:26,241 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:26,241 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 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] [2022-07-22 21:27:26,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:27:26,241 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:27:26,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:26,242 INFO L85 PathProgramCache]: Analyzing trace with hash -196327125, now seen corresponding path program 1 times [2022-07-22 21:27:26,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:26,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388155243] [2022-07-22 21:27:26,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:26,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:27:26,255 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:27:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:27:26,269 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:27:26,269 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:27:26,269 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-22 21:27:26,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-22 21:27:26,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-22 21:27:26,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-22 21:27:26,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-22 21:27:26,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:27:26,270 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-22 21:27:26,270 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:27:26,270 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-22 21:27:26,284 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:27:26,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 120 places, 110 transitions, 262 flow [2022-07-22 21:27:26,294 INFO L129 PetriNetUnfolder]: 5/133 cut-off events. [2022-07-22 21:27:26,294 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-22 21:27:26,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 133 events. 5/133 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 186 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 147. Up to 8 conditions per place. [2022-07-22 21:27:26,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 110 transitions, 262 flow [2022-07-22 21:27:26,296 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 81 transitions, 186 flow [2022-07-22 21:27:26,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:27:26,297 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@1515fbb2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7f5f327c [2022-07-22 21:27:26,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-22 21:27:26,299 INFO L129 PetriNetUnfolder]: 1/41 cut-off events. [2022-07-22 21:27:26,299 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:27:26,299 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:26,299 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] [2022-07-22 21:27:26,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-22 21:27:26,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:26,300 INFO L85 PathProgramCache]: Analyzing trace with hash 980719107, now seen corresponding path program 1 times [2022-07-22 21:27:26,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:26,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747080173] [2022-07-22 21:27:26,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:26,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:26,329 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 21:27:26,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:26,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747080173] [2022-07-22 21:27:26,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747080173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:26,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:26,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:27:26,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731600371] [2022-07-22 21:27:26,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:26,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:27:26,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:26,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:27:26,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:27:26,331 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 110 [2022-07-22 21:27:26,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 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 21:27:26,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:26,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 110 [2022-07-22 21:27:26,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:26,545 INFO L129 PetriNetUnfolder]: 541/1578 cut-off events. [2022-07-22 21:27:26,546 INFO L130 PetriNetUnfolder]: For 504/504 co-relation queries the response was YES. [2022-07-22 21:27:26,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2822 conditions, 1578 events. 541/1578 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11849 event pairs, 184 based on Foata normal form. 274/1742 useless extension candidates. Maximal degree in co-relation 2787. Up to 318 conditions per place. [2022-07-22 21:27:26,559 INFO L132 encePairwiseOnDemand]: 100/110 looper letters, 60 selfloop transitions, 14 changer transitions 0/135 dead transitions. [2022-07-22 21:27:26,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 135 transitions, 520 flow [2022-07-22 21:27:26,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:27:26,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:27:26,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 740 transitions. [2022-07-22 21:27:26,561 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8409090909090909 [2022-07-22 21:27:26,561 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 740 transitions. [2022-07-22 21:27:26,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 740 transitions. [2022-07-22 21:27:26,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:26,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 740 transitions. [2022-07-22 21:27:26,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.5) internal successors, (740), 8 states have internal predecessors, (740), 0 states have call successors, (0), 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 21:27:26,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 110.0) internal successors, (990), 9 states have internal predecessors, (990), 0 states have call successors, (0), 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 21:27:26,564 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 110.0) internal successors, (990), 9 states have internal predecessors, (990), 0 states have call successors, (0), 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 21:27:26,564 INFO L186 Difference]: Start difference. First operand has 89 places, 81 transitions, 186 flow. Second operand 8 states and 740 transitions. [2022-07-22 21:27:26,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 135 transitions, 520 flow [2022-07-22 21:27:26,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 135 transitions, 501 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-07-22 21:27:26,567 INFO L242 Difference]: Finished difference. Result has 99 places, 91 transitions, 278 flow [2022-07-22 21:27:26,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=278, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2022-07-22 21:27:26,568 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 10 predicate places. [2022-07-22 21:27:26,568 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 278 flow [2022-07-22 21:27:26,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 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 21:27:26,568 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:26,569 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] [2022-07-22 21:27:26,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:27:26,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-22 21:27:26,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:26,569 INFO L85 PathProgramCache]: Analyzing trace with hash 941136163, now seen corresponding path program 1 times [2022-07-22 21:27:26,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:26,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618259252] [2022-07-22 21:27:26,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:26,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:26,624 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 21:27:26,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:26,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618259252] [2022-07-22 21:27:26,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618259252] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:26,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:26,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:27:26,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483239978] [2022-07-22 21:27:26,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:26,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:27:26,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:26,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:27:26,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:27:26,628 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 110 [2022-07-22 21:27:26,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 82.57142857142857) internal successors, (578), 7 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:26,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:26,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 110 [2022-07-22 21:27:26,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:27,200 INFO L129 PetriNetUnfolder]: 921/3317 cut-off events. [2022-07-22 21:27:27,201 INFO L130 PetriNetUnfolder]: For 2190/2190 co-relation queries the response was YES. [2022-07-22 21:27:27,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7098 conditions, 3317 events. 921/3317 cut-off events. For 2190/2190 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 32178 event pairs, 206 based on Foata normal form. 19/3198 useless extension candidates. Maximal degree in co-relation 7057. Up to 415 conditions per place. [2022-07-22 21:27:27,266 INFO L132 encePairwiseOnDemand]: 101/110 looper letters, 122 selfloop transitions, 44 changer transitions 0/226 dead transitions. [2022-07-22 21:27:27,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 226 transitions, 1261 flow [2022-07-22 21:27:27,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:27:27,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:27:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1703 transitions. [2022-07-22 21:27:27,270 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8148325358851675 [2022-07-22 21:27:27,270 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1703 transitions. [2022-07-22 21:27:27,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1703 transitions. [2022-07-22 21:27:27,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:27,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1703 transitions. [2022-07-22 21:27:27,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 89.63157894736842) internal successors, (1703), 19 states have internal predecessors, (1703), 0 states have call successors, (0), 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 21:27:27,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 110.0) internal successors, (2200), 20 states have internal predecessors, (2200), 0 states have call successors, (0), 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 21:27:27,278 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 110.0) internal successors, (2200), 20 states have internal predecessors, (2200), 0 states have call successors, (0), 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 21:27:27,278 INFO L186 Difference]: Start difference. First operand has 99 places, 91 transitions, 278 flow. Second operand 19 states and 1703 transitions. [2022-07-22 21:27:27,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 226 transitions, 1261 flow [2022-07-22 21:27:27,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 226 transitions, 1261 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:27:27,286 INFO L242 Difference]: Finished difference. Result has 128 places, 123 transitions, 661 flow [2022-07-22 21:27:27,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=661, PETRI_PLACES=128, PETRI_TRANSITIONS=123} [2022-07-22 21:27:27,286 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 39 predicate places. [2022-07-22 21:27:27,287 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 123 transitions, 661 flow [2022-07-22 21:27:27,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.57142857142857) internal successors, (578), 7 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:27,287 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:27,287 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] [2022-07-22 21:27:27,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:27:27,288 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-22 21:27:27,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:27,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2121700525, now seen corresponding path program 1 times [2022-07-22 21:27:27,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:27,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508889995] [2022-07-22 21:27:27,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:27,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:27,333 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 21:27:27,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:27,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508889995] [2022-07-22 21:27:27,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508889995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:27,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:27,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:27:27,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365947677] [2022-07-22 21:27:27,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:27,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:27:27,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:27,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:27:27,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:27:27,336 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 110 [2022-07-22 21:27:27,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 123 transitions, 661 flow. Second operand has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:27,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:27,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 110 [2022-07-22 21:27:27,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:28,055 INFO L129 PetriNetUnfolder]: 1144/3944 cut-off events. [2022-07-22 21:27:28,056 INFO L130 PetriNetUnfolder]: For 10849/10855 co-relation queries the response was YES. [2022-07-22 21:27:28,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12044 conditions, 3944 events. 1144/3944 cut-off events. For 10849/10855 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 40792 event pairs, 281 based on Foata normal form. 33/3859 useless extension candidates. Maximal degree in co-relation 11990. Up to 636 conditions per place. [2022-07-22 21:27:28,102 INFO L132 encePairwiseOnDemand]: 101/110 looper letters, 163 selfloop transitions, 86 changer transitions 0/309 dead transitions. [2022-07-22 21:27:28,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 309 transitions, 2759 flow [2022-07-22 21:27:28,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:27:28,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:27:28,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1701 transitions. [2022-07-22 21:27:28,106 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8138755980861244 [2022-07-22 21:27:28,106 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1701 transitions. [2022-07-22 21:27:28,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1701 transitions. [2022-07-22 21:27:28,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:28,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1701 transitions. [2022-07-22 21:27:28,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 89.52631578947368) internal successors, (1701), 19 states have internal predecessors, (1701), 0 states have call successors, (0), 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 21:27:28,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 110.0) internal successors, (2200), 20 states have internal predecessors, (2200), 0 states have call successors, (0), 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 21:27:28,112 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 110.0) internal successors, (2200), 20 states have internal predecessors, (2200), 0 states have call successors, (0), 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 21:27:28,112 INFO L186 Difference]: Start difference. First operand has 128 places, 123 transitions, 661 flow. Second operand 19 states and 1701 transitions. [2022-07-22 21:27:28,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 309 transitions, 2759 flow [2022-07-22 21:27:28,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 309 transitions, 2552 flow, removed 83 selfloop flow, removed 3 redundant places. [2022-07-22 21:27:28,194 INFO L242 Difference]: Finished difference. Result has 154 places, 186 transitions, 1550 flow [2022-07-22 21:27:28,194 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1550, PETRI_PLACES=154, PETRI_TRANSITIONS=186} [2022-07-22 21:27:28,195 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 65 predicate places. [2022-07-22 21:27:28,195 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 186 transitions, 1550 flow [2022-07-22 21:27:28,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:28,196 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:28,196 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] [2022-07-22 21:27:28,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:27:28,196 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-22 21:27:28,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:28,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1557261265, now seen corresponding path program 1 times [2022-07-22 21:27:28,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:28,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277802601] [2022-07-22 21:27:28,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:28,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:28,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:28,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277802601] [2022-07-22 21:27:28,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277802601] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:27:28,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487269273] [2022-07-22 21:27:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:28,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:27:28,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:27:28,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:27:28,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 21:27:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:28,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 21:27:28,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 21:27:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:28,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 21:27:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:28,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487269273] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 21:27:28,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 21:27:28,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-07-22 21:27:28,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563166143] [2022-07-22 21:27:28,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 21:27:28,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:27:28,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:28,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:27:28,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:27:28,607 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 110 [2022-07-22 21:27:28,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 186 transitions, 1550 flow. Second operand has 18 states, 18 states have (on average 82.0) internal successors, (1476), 18 states have internal predecessors, (1476), 0 states have call successors, (0), 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 21:27:28,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:28,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 110 [2022-07-22 21:27:28,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:30,071 INFO L129 PetriNetUnfolder]: 1451/5580 cut-off events. [2022-07-22 21:27:30,072 INFO L130 PetriNetUnfolder]: For 24278/24278 co-relation queries the response was YES. [2022-07-22 21:27:30,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17928 conditions, 5580 events. 1451/5580 cut-off events. For 24278/24278 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 63147 event pairs, 209 based on Foata normal form. 10/5396 useless extension candidates. Maximal degree in co-relation 17862. Up to 597 conditions per place. [2022-07-22 21:27:30,142 INFO L132 encePairwiseOnDemand]: 100/110 looper letters, 230 selfloop transitions, 192 changer transitions 0/481 dead transitions. [2022-07-22 21:27:30,142 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 481 transitions, 5027 flow [2022-07-22 21:27:30,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-07-22 21:27:30,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2022-07-22 21:27:30,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 4913 transitions. [2022-07-22 21:27:30,148 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7835725677830941 [2022-07-22 21:27:30,149 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 4913 transitions. [2022-07-22 21:27:30,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 4913 transitions. [2022-07-22 21:27:30,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:30,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 4913 transitions. [2022-07-22 21:27:30,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 86.19298245614036) internal successors, (4913), 57 states have internal predecessors, (4913), 0 states have call successors, (0), 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 21:27:30,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 110.0) internal successors, (6380), 58 states have internal predecessors, (6380), 0 states have call successors, (0), 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 21:27:30,166 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 110.0) internal successors, (6380), 58 states have internal predecessors, (6380), 0 states have call successors, (0), 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 21:27:30,166 INFO L186 Difference]: Start difference. First operand has 154 places, 186 transitions, 1550 flow. Second operand 57 states and 4913 transitions. [2022-07-22 21:27:30,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 481 transitions, 5027 flow [2022-07-22 21:27:30,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 481 transitions, 4763 flow, removed 132 selfloop flow, removed 0 redundant places. [2022-07-22 21:27:30,276 INFO L242 Difference]: Finished difference. Result has 232 places, 282 transitions, 3258 flow [2022-07-22 21:27:30,276 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=3258, PETRI_PLACES=232, PETRI_TRANSITIONS=282} [2022-07-22 21:27:30,277 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, 143 predicate places. [2022-07-22 21:27:30,277 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 282 transitions, 3258 flow [2022-07-22 21:27:30,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 82.0) internal successors, (1476), 18 states have internal predecessors, (1476), 0 states have call successors, (0), 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 21:27:30,278 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:30,278 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2022-07-22 21:27:30,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 21:27:30,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:27:30,495 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-22 21:27:30,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:30,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1737120457, now seen corresponding path program 1 times [2022-07-22 21:27:30,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:30,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594718816] [2022-07-22 21:27:30,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:30,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:27:30,509 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:27:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:27:30,521 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:27:30,521 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:27:30,522 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-07-22 21:27:30,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-22 21:27:30,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-07-22 21:27:30,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-07-22 21:27:30,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-22 21:27:30,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-22 21:27:30,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:27:30,523 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-22 21:27:30,523 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:27:30,523 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-22 21:27:30,539 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:27:30,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 131 transitions, 326 flow [2022-07-22 21:27:30,629 INFO L129 PetriNetUnfolder]: 6/159 cut-off events. [2022-07-22 21:27:30,629 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-22 21:27:30,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 159 events. 6/159 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 226 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 179. Up to 10 conditions per place. [2022-07-22 21:27:30,630 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 131 transitions, 326 flow [2022-07-22 21:27:30,631 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 88 transitions, 211 flow [2022-07-22 21:27:30,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:27:30,632 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@1515fbb2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7f5f327c [2022-07-22 21:27:30,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-22 21:27:30,633 INFO L129 PetriNetUnfolder]: 1/41 cut-off events. [2022-07-22 21:27:30,633 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:27:30,633 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:30,634 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] [2022-07-22 21:27:30,634 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:27:30,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:30,637 INFO L85 PathProgramCache]: Analyzing trace with hash -2005294478, now seen corresponding path program 1 times [2022-07-22 21:27:30,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:30,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011470897] [2022-07-22 21:27:30,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:30,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:30,735 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 21:27:30,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:30,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011470897] [2022-07-22 21:27:30,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011470897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:30,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:30,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:27:30,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107252172] [2022-07-22 21:27:30,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:30,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:27:30,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:30,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:27:30,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:27:30,737 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 131 [2022-07-22 21:27:30,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 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 21:27:30,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:30,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 131 [2022-07-22 21:27:30,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:31,348 INFO L129 PetriNetUnfolder]: 2465/5719 cut-off events. [2022-07-22 21:27:31,349 INFO L130 PetriNetUnfolder]: For 2918/2918 co-relation queries the response was YES. [2022-07-22 21:27:31,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10838 conditions, 5719 events. 2465/5719 cut-off events. For 2918/2918 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 50370 event pairs, 734 based on Foata normal form. 1002/6427 useless extension candidates. Maximal degree in co-relation 10802. Up to 1465 conditions per place. [2022-07-22 21:27:31,404 INFO L132 encePairwiseOnDemand]: 120/131 looper letters, 78 selfloop transitions, 17 changer transitions 0/160 dead transitions. [2022-07-22 21:27:31,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 160 transitions, 677 flow [2022-07-22 21:27:31,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:27:31,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:27:31,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 873 transitions. [2022-07-22 21:27:31,406 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8330152671755725 [2022-07-22 21:27:31,406 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 873 transitions. [2022-07-22 21:27:31,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 873 transitions. [2022-07-22 21:27:31,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:31,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 873 transitions. [2022-07-22 21:27:31,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 109.125) internal successors, (873), 8 states have internal predecessors, (873), 0 states have call successors, (0), 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 21:27:31,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 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 21:27:31,409 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 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 21:27:31,409 INFO L186 Difference]: Start difference. First operand has 98 places, 88 transitions, 211 flow. Second operand 8 states and 873 transitions. [2022-07-22 21:27:31,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 160 transitions, 677 flow [2022-07-22 21:27:31,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 160 transitions, 628 flow, removed 24 selfloop flow, removed 1 redundant places. [2022-07-22 21:27:31,412 INFO L242 Difference]: Finished difference. Result has 108 places, 101 transitions, 320 flow [2022-07-22 21:27:31,413 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=320, PETRI_PLACES=108, PETRI_TRANSITIONS=101} [2022-07-22 21:27:31,413 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 10 predicate places. [2022-07-22 21:27:31,413 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 101 transitions, 320 flow [2022-07-22 21:27:31,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 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 21:27:31,414 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:31,414 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] [2022-07-22 21:27:31,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:27:31,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:27:31,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:31,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1225581279, now seen corresponding path program 1 times [2022-07-22 21:27:31,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:31,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972959344] [2022-07-22 21:27:31,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:31,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:31,452 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 21:27:31,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:31,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972959344] [2022-07-22 21:27:31,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972959344] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:31,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:31,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:27:31,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076367843] [2022-07-22 21:27:31,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:31,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:27:31,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:31,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:27:31,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:27:31,455 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 131 [2022-07-22 21:27:31,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 101 transitions, 320 flow. Second operand has 7 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 states have internal predecessors, (676), 0 states have call successors, (0), 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 21:27:31,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:31,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 131 [2022-07-22 21:27:31,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:32,693 INFO L129 PetriNetUnfolder]: 4859/11815 cut-off events. [2022-07-22 21:27:32,693 INFO L130 PetriNetUnfolder]: For 9938/9938 co-relation queries the response was YES. [2022-07-22 21:27:32,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29439 conditions, 11815 events. 4859/11815 cut-off events. For 9938/9938 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 123251 event pairs, 1050 based on Foata normal form. 65/11505 useless extension candidates. Maximal degree in co-relation 29397. Up to 2287 conditions per place. [2022-07-22 21:27:32,860 INFO L132 encePairwiseOnDemand]: 121/131 looper letters, 166 selfloop transitions, 54 changer transitions 0/284 dead transitions. [2022-07-22 21:27:32,861 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 284 transitions, 1669 flow [2022-07-22 21:27:32,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:27:32,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:27:32,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2023 transitions. [2022-07-22 21:27:32,863 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8127762153475291 [2022-07-22 21:27:32,863 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2023 transitions. [2022-07-22 21:27:32,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2023 transitions. [2022-07-22 21:27:32,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:32,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2023 transitions. [2022-07-22 21:27:32,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 106.47368421052632) internal successors, (2023), 19 states have internal predecessors, (2023), 0 states have call successors, (0), 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 21:27:32,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 131.0) internal successors, (2620), 20 states have internal predecessors, (2620), 0 states have call successors, (0), 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 21:27:32,870 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 131.0) internal successors, (2620), 20 states have internal predecessors, (2620), 0 states have call successors, (0), 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 21:27:32,870 INFO L186 Difference]: Start difference. First operand has 108 places, 101 transitions, 320 flow. Second operand 19 states and 2023 transitions. [2022-07-22 21:27:32,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 284 transitions, 1669 flow [2022-07-22 21:27:32,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 284 transitions, 1669 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:27:32,897 INFO L242 Difference]: Finished difference. Result has 137 places, 140 transitions, 794 flow [2022-07-22 21:27:32,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=794, PETRI_PLACES=137, PETRI_TRANSITIONS=140} [2022-07-22 21:27:32,898 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 39 predicate places. [2022-07-22 21:27:32,899 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 140 transitions, 794 flow [2022-07-22 21:27:32,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 states have internal predecessors, (676), 0 states have call successors, (0), 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 21:27:32,899 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:32,899 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] [2022-07-22 21:27:32,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:27:32,900 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:27:32,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:32,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1933405436, now seen corresponding path program 1 times [2022-07-22 21:27:32,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:32,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188873672] [2022-07-22 21:27:32,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:32,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:32,958 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 21:27:32,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:32,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188873672] [2022-07-22 21:27:32,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188873672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:32,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:32,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:27:32,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946056028] [2022-07-22 21:27:32,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:32,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:27:32,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:32,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:27:32,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:27:32,961 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 131 [2022-07-22 21:27:32,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 140 transitions, 794 flow. Second operand has 7 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 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 21:27:32,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:32,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 131 [2022-07-22 21:27:32,962 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:35,550 INFO L129 PetriNetUnfolder]: 7508/19212 cut-off events. [2022-07-22 21:27:35,551 INFO L130 PetriNetUnfolder]: For 62206/62206 co-relation queries the response was YES. [2022-07-22 21:27:35,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65870 conditions, 19212 events. 7508/19212 cut-off events. For 62206/62206 co-relation queries the response was YES. Maximal size of possible extension queue 1446. Compared 228346 event pairs, 1832 based on Foata normal form. 108/18764 useless extension candidates. Maximal degree in co-relation 65815. Up to 4037 conditions per place. [2022-07-22 21:27:35,771 INFO L132 encePairwiseOnDemand]: 121/131 looper letters, 226 selfloop transitions, 102 changer transitions 0/392 dead transitions. [2022-07-22 21:27:35,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 392 transitions, 3611 flow [2022-07-22 21:27:35,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:27:35,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:27:35,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2021 transitions. [2022-07-22 21:27:35,775 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8119726797910808 [2022-07-22 21:27:35,775 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2021 transitions. [2022-07-22 21:27:35,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2021 transitions. [2022-07-22 21:27:35,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:35,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2021 transitions. [2022-07-22 21:27:35,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 106.36842105263158) internal successors, (2021), 19 states have internal predecessors, (2021), 0 states have call successors, (0), 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 21:27:35,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 131.0) internal successors, (2620), 20 states have internal predecessors, (2620), 0 states have call successors, (0), 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 21:27:35,792 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 131.0) internal successors, (2620), 20 states have internal predecessors, (2620), 0 states have call successors, (0), 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 21:27:35,793 INFO L186 Difference]: Start difference. First operand has 137 places, 140 transitions, 794 flow. Second operand 19 states and 2021 transitions. [2022-07-22 21:27:35,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 392 transitions, 3611 flow [2022-07-22 21:27:36,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 392 transitions, 3286 flow, removed 136 selfloop flow, removed 3 redundant places. [2022-07-22 21:27:36,157 INFO L242 Difference]: Finished difference. Result has 163 places, 213 transitions, 1825 flow [2022-07-22 21:27:36,157 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1825, PETRI_PLACES=163, PETRI_TRANSITIONS=213} [2022-07-22 21:27:36,158 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 65 predicate places. [2022-07-22 21:27:36,158 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 213 transitions, 1825 flow [2022-07-22 21:27:36,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 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 21:27:36,158 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:36,159 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] [2022-07-22 21:27:36,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 21:27:36,159 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:27:36,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:36,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1164470650, now seen corresponding path program 1 times [2022-07-22 21:27:36,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:36,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896755544] [2022-07-22 21:27:36,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:36,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:36,245 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 21:27:36,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:36,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896755544] [2022-07-22 21:27:36,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896755544] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:36,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:36,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 21:27:36,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212566621] [2022-07-22 21:27:36,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:36,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:27:36,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:36,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:27:36,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 21:27:36,248 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 131 [2022-07-22 21:27:36,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 213 transitions, 1825 flow. Second operand has 9 states, 9 states have (on average 95.66666666666667) internal successors, (861), 9 states have internal predecessors, (861), 0 states have call successors, (0), 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 21:27:36,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:36,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 131 [2022-07-22 21:27:36,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:40,675 INFO L129 PetriNetUnfolder]: 9460/26062 cut-off events. [2022-07-22 21:27:40,676 INFO L130 PetriNetUnfolder]: For 155821/155821 co-relation queries the response was YES. [2022-07-22 21:27:41,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97483 conditions, 26062 events. 9460/26062 cut-off events. For 155821/155821 co-relation queries the response was YES. Maximal size of possible extension queue 1834. Compared 329171 event pairs, 1908 based on Foata normal form. 19/25137 useless extension candidates. Maximal degree in co-relation 97416. Up to 4102 conditions per place. [2022-07-22 21:27:41,357 INFO L132 encePairwiseOnDemand]: 120/131 looper letters, 345 selfloop transitions, 204 changer transitions 0/612 dead transitions. [2022-07-22 21:27:41,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 612 transitions, 6450 flow [2022-07-22 21:27:41,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-22 21:27:41,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-07-22 21:27:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4707 transitions. [2022-07-22 21:27:41,364 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7984732824427481 [2022-07-22 21:27:41,364 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4707 transitions. [2022-07-22 21:27:41,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4707 transitions. [2022-07-22 21:27:41,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:41,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4707 transitions. [2022-07-22 21:27:41,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 104.6) internal successors, (4707), 45 states have internal predecessors, (4707), 0 states have call successors, (0), 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 21:27:41,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 131.0) internal successors, (6026), 46 states have internal predecessors, (6026), 0 states have call successors, (0), 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 21:27:41,377 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 131.0) internal successors, (6026), 46 states have internal predecessors, (6026), 0 states have call successors, (0), 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 21:27:41,377 INFO L186 Difference]: Start difference. First operand has 163 places, 213 transitions, 1825 flow. Second operand 45 states and 4707 transitions. [2022-07-22 21:27:41,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 612 transitions, 6450 flow [2022-07-22 21:27:42,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 612 transitions, 6104 flow, removed 173 selfloop flow, removed 0 redundant places. [2022-07-22 21:27:42,426 INFO L242 Difference]: Finished difference. Result has 219 places, 300 transitions, 3326 flow [2022-07-22 21:27:42,427 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=3326, PETRI_PLACES=219, PETRI_TRANSITIONS=300} [2022-07-22 21:27:42,427 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 121 predicate places. [2022-07-22 21:27:42,427 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 300 transitions, 3326 flow [2022-07-22 21:27:42,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 95.66666666666667) internal successors, (861), 9 states have internal predecessors, (861), 0 states have call successors, (0), 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 21:27:42,428 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:42,428 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] [2022-07-22 21:27:42,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 21:27:42,428 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:27:42,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:42,429 INFO L85 PathProgramCache]: Analyzing trace with hash 797242042, now seen corresponding path program 2 times [2022-07-22 21:27:42,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:42,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704570353] [2022-07-22 21:27:42,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:42,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:42,485 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 21:27:42,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:42,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704570353] [2022-07-22 21:27:42,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704570353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:42,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:42,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 21:27:42,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110258820] [2022-07-22 21:27:42,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:42,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:27:42,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:42,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:27:42,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 21:27:42,488 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 131 [2022-07-22 21:27:42,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 300 transitions, 3326 flow. Second operand has 9 states, 9 states have (on average 95.66666666666667) internal successors, (861), 9 states have internal predecessors, (861), 0 states have call successors, (0), 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 21:27:42,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:42,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 131 [2022-07-22 21:27:42,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:47,746 INFO L129 PetriNetUnfolder]: 9851/26613 cut-off events. [2022-07-22 21:27:47,747 INFO L130 PetriNetUnfolder]: For 244938/244938 co-relation queries the response was YES. [2022-07-22 21:27:48,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113823 conditions, 26613 events. 9851/26613 cut-off events. For 244938/244938 co-relation queries the response was YES. Maximal size of possible extension queue 1966. Compared 337914 event pairs, 1512 based on Foata normal form. 19/25889 useless extension candidates. Maximal degree in co-relation 113742. Up to 3803 conditions per place. [2022-07-22 21:27:48,344 INFO L132 encePairwiseOnDemand]: 120/131 looper letters, 366 selfloop transitions, 240 changer transitions 0/669 dead transitions. [2022-07-22 21:27:48,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 669 transitions, 8225 flow [2022-07-22 21:27:48,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-22 21:27:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-07-22 21:27:48,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4707 transitions. [2022-07-22 21:27:48,357 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7984732824427481 [2022-07-22 21:27:48,357 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4707 transitions. [2022-07-22 21:27:48,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4707 transitions. [2022-07-22 21:27:48,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:48,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4707 transitions. [2022-07-22 21:27:48,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 104.6) internal successors, (4707), 45 states have internal predecessors, (4707), 0 states have call successors, (0), 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 21:27:48,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 131.0) internal successors, (6026), 46 states have internal predecessors, (6026), 0 states have call successors, (0), 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 21:27:48,380 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 131.0) internal successors, (6026), 46 states have internal predecessors, (6026), 0 states have call successors, (0), 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 21:27:48,380 INFO L186 Difference]: Start difference. First operand has 219 places, 300 transitions, 3326 flow. Second operand 45 states and 4707 transitions. [2022-07-22 21:27:48,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 669 transitions, 8225 flow [2022-07-22 21:27:50,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 669 transitions, 7737 flow, removed 179 selfloop flow, removed 12 redundant places. [2022-07-22 21:27:50,680 INFO L242 Difference]: Finished difference. Result has 263 places, 355 transitions, 4479 flow [2022-07-22 21:27:50,681 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4479, PETRI_PLACES=263, PETRI_TRANSITIONS=355} [2022-07-22 21:27:50,681 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 165 predicate places. [2022-07-22 21:27:50,681 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 355 transitions, 4479 flow [2022-07-22 21:27:50,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 95.66666666666667) internal successors, (861), 9 states have internal predecessors, (861), 0 states have call successors, (0), 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 21:27:50,682 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:50,682 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 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] [2022-07-22 21:27:50,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 21:27:50,682 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:27:50,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:50,683 INFO L85 PathProgramCache]: Analyzing trace with hash -701023176, now seen corresponding path program 1 times [2022-07-22 21:27:50,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:50,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532226145] [2022-07-22 21:27:50,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:50,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:50,717 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 21:27:50,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:50,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532226145] [2022-07-22 21:27:50,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532226145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:50,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:50,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:27:50,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710081743] [2022-07-22 21:27:50,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:50,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:27:50,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:50,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:27:50,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:27:50,720 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 131 [2022-07-22 21:27:50,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 355 transitions, 4479 flow. Second operand has 7 states, 7 states have (on average 96.85714285714286) internal successors, (678), 7 states have internal predecessors, (678), 0 states have call successors, (0), 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 21:27:50,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:50,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 131 [2022-07-22 21:27:50,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:57,391 INFO L129 PetriNetUnfolder]: 12295/32704 cut-off events. [2022-07-22 21:27:57,391 INFO L130 PetriNetUnfolder]: For 523354/523354 co-relation queries the response was YES. [2022-07-22 21:27:58,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178847 conditions, 32704 events. 12295/32704 cut-off events. For 523354/523354 co-relation queries the response was YES. Maximal size of possible extension queue 2728. Compared 436437 event pairs, 2567 based on Foata normal form. 201/32542 useless extension candidates. Maximal degree in co-relation 178754. Up to 5567 conditions per place. [2022-07-22 21:27:58,641 INFO L132 encePairwiseOnDemand]: 121/131 looper letters, 673 selfloop transitions, 317 changer transitions 0/1054 dead transitions. [2022-07-22 21:27:58,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 1054 transitions, 17846 flow [2022-07-22 21:27:58,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:27:58,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:27:58,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2010 transitions. [2022-07-22 21:27:58,664 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8075532342306148 [2022-07-22 21:27:58,664 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2010 transitions. [2022-07-22 21:27:58,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2010 transitions. [2022-07-22 21:27:58,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:58,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2010 transitions. [2022-07-22 21:27:58,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 105.78947368421052) internal successors, (2010), 19 states have internal predecessors, (2010), 0 states have call successors, (0), 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 21:27:58,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 131.0) internal successors, (2620), 20 states have internal predecessors, (2620), 0 states have call successors, (0), 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 21:27:58,670 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 131.0) internal successors, (2620), 20 states have internal predecessors, (2620), 0 states have call successors, (0), 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 21:27:58,670 INFO L186 Difference]: Start difference. First operand has 263 places, 355 transitions, 4479 flow. Second operand 19 states and 2010 transitions. [2022-07-22 21:27:58,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 1054 transitions, 17846 flow [2022-07-22 21:28:06,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 1054 transitions, 16524 flow, removed 489 selfloop flow, removed 18 redundant places. [2022-07-22 21:28:06,457 INFO L242 Difference]: Finished difference. Result has 274 places, 605 transitions, 9755 flow [2022-07-22 21:28:06,458 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=4089, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9755, PETRI_PLACES=274, PETRI_TRANSITIONS=605} [2022-07-22 21:28:06,458 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 176 predicate places. [2022-07-22 21:28:06,459 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 605 transitions, 9755 flow [2022-07-22 21:28:06,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.85714285714286) internal successors, (678), 7 states have internal predecessors, (678), 0 states have call successors, (0), 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 21:28:06,459 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:06,459 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 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] [2022-07-22 21:28:06,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 21:28:06,459 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:28:06,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:06,460 INFO L85 PathProgramCache]: Analyzing trace with hash -930440522, now seen corresponding path program 1 times [2022-07-22 21:28:06,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:06,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609085278] [2022-07-22 21:28:06,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:06,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 21:28:06,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:06,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609085278] [2022-07-22 21:28:06,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609085278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:06,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:06,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 21:28:06,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509355699] [2022-07-22 21:28:06,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:06,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:28:06,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:06,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:28:06,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 21:28:06,524 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 131 [2022-07-22 21:28:06,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 605 transitions, 9755 flow. Second operand has 9 states, 9 states have (on average 95.77777777777777) internal successors, (862), 9 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:06,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:06,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 131 [2022-07-22 21:28:06,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:17,032 INFO L129 PetriNetUnfolder]: 15039/41514 cut-off events. [2022-07-22 21:28:17,045 INFO L130 PetriNetUnfolder]: For 815768/815768 co-relation queries the response was YES. [2022-07-22 21:28:18,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 233588 conditions, 41514 events. 15039/41514 cut-off events. For 815768/815768 co-relation queries the response was YES. Maximal size of possible extension queue 3275. Compared 577933 event pairs, 2201 based on Foata normal form. 43/40883 useless extension candidates. Maximal degree in co-relation 233484. Up to 6142 conditions per place. [2022-07-22 21:28:18,448 INFO L132 encePairwiseOnDemand]: 120/131 looper letters, 637 selfloop transitions, 604 changer transitions 0/1304 dead transitions. [2022-07-22 21:28:18,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 1304 transitions, 23635 flow [2022-07-22 21:28:18,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-22 21:28:18,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-07-22 21:28:18,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4697 transitions. [2022-07-22 21:28:18,453 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.796776929601357 [2022-07-22 21:28:18,453 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4697 transitions. [2022-07-22 21:28:18,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4697 transitions. [2022-07-22 21:28:18,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:18,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4697 transitions. [2022-07-22 21:28:18,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 104.37777777777778) internal successors, (4697), 45 states have internal predecessors, (4697), 0 states have call successors, (0), 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 21:28:18,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 131.0) internal successors, (6026), 46 states have internal predecessors, (6026), 0 states have call successors, (0), 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 21:28:18,466 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 131.0) internal successors, (6026), 46 states have internal predecessors, (6026), 0 states have call successors, (0), 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 21:28:18,466 INFO L186 Difference]: Start difference. First operand has 274 places, 605 transitions, 9755 flow. Second operand 45 states and 4697 transitions. [2022-07-22 21:28:18,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 1304 transitions, 23635 flow [2022-07-22 21:28:36,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 1304 transitions, 22357 flow, removed 639 selfloop flow, removed 0 redundant places. [2022-07-22 21:28:36,017 INFO L242 Difference]: Finished difference. Result has 330 places, 832 transitions, 15141 flow [2022-07-22 21:28:36,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=8827, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=385, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=15141, PETRI_PLACES=330, PETRI_TRANSITIONS=832} [2022-07-22 21:28:36,019 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, 232 predicate places. [2022-07-22 21:28:36,019 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 832 transitions, 15141 flow [2022-07-22 21:28:36,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 95.77777777777777) internal successors, (862), 9 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:36,019 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:36,019 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 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] [2022-07-22 21:28:36,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 21:28:36,020 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:28:36,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:36,020 INFO L85 PathProgramCache]: Analyzing trace with hash 740571830, now seen corresponding path program 2 times [2022-07-22 21:28:36,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:36,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969783236] [2022-07-22 21:28:36,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:36,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 21:28:36,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:36,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969783236] [2022-07-22 21:28:36,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969783236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:36,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:36,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 21:28:36,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339641090] [2022-07-22 21:28:36,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:36,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 21:28:36,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:36,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 21:28:36,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 21:28:36,079 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 131 [2022-07-22 21:28:36,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 832 transitions, 15141 flow. Second operand has 9 states, 9 states have (on average 95.77777777777777) internal successors, (862), 9 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:36,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:36,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 131 [2022-07-22 21:28:36,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand