./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/weaver/parallel-barrier.wvr.c -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 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:26:47,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:26:47,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:26:47,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:26:47,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:26:47,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:26:47,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:26:47,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:26:47,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:26:47,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:26:47,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:26:47,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:26:47,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:26:47,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:26:47,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:26:47,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:26:47,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:26:47,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:26:47,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:26:47,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:26:47,331 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:26:47,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:26:47,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:26:47,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:26:47,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:26:47,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:26:47,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:26:47,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:26:47,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:26:47,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:26:47,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:26:47,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:26:47,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:26:47,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:26:47,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:26:47,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:26:47,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:26:47,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:26:47,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:26:47,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:26:47,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:26:47,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:26:47,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:26:47,369 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:26:47,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:26:47,370 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:26:47,370 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:26:47,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:26:47,371 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:26:47,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:26:47,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:26:47,371 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:26:47,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:26:47,372 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:26:47,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:26:47,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:26:47,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:26:47,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:26:47,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:26:47,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:26:47,373 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:26:47,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:26:47,374 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:26:47,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:26:47,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:26:47,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:26:47,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:26:47,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:26:47,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:26:47,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:26:47,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:26:47,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:26:47,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:26:47,375 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:26:47,376 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:26:47,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:26:47,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 [2022-07-12 10:26:47,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:26:47,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:26:47,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:26:47,569 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:26:47,569 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:26:47,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-07-12 10:26:47,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db35a076c/83dfce2e719d41e790aafd5d5cf249da/FLAG11cbc2303 [2022-07-12 10:26:48,013 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:26:48,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-07-12 10:26:48,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db35a076c/83dfce2e719d41e790aafd5d5cf249da/FLAG11cbc2303 [2022-07-12 10:26:48,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db35a076c/83dfce2e719d41e790aafd5d5cf249da [2022-07-12 10:26:48,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:26:48,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:26:48,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:26:48,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:26:48,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:26:48,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:26:48" (1/1) ... [2022-07-12 10:26:48,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21279703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:48, skipping insertion in model container [2022-07-12 10:26:48,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:26:48" (1/1) ... [2022-07-12 10:26:48,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:26:48,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:26:48,214 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/weaver/parallel-barrier.wvr.c[4722,4735] [2022-07-12 10:26:48,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:26:48,224 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:26:48,243 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/weaver/parallel-barrier.wvr.c[4722,4735] [2022-07-12 10:26:48,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:26:48,252 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:26:48,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:48 WrapperNode [2022-07-12 10:26:48,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:26:48,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:26:48,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:26:48,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:26:48,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:48" (1/1) ... [2022-07-12 10:26:48,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:48" (1/1) ... [2022-07-12 10:26:48,297 INFO L137 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 253 [2022-07-12 10:26:48,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:26:48,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:26:48,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:26:48,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:26:48,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:48" (1/1) ... [2022-07-12 10:26:48,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:48" (1/1) ... [2022-07-12 10:26:48,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:48" (1/1) ... [2022-07-12 10:26:48,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:48" (1/1) ... [2022-07-12 10:26:48,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:48" (1/1) ... [2022-07-12 10:26:48,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:48" (1/1) ... [2022-07-12 10:26:48,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:48" (1/1) ... [2022-07-12 10:26:48,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:26:48,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:26:48,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:26:48,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:26:48,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:48" (1/1) ... [2022-07-12 10:26:48,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:26:48,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:26:48,360 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) [2022-07-12 10:26:48,361 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 [2022-07-12 10:26:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:26:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:26:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:26:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:26:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:26:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:26:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:26:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:26:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:26:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:26:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-12 10:26:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-12 10:26:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:26:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-07-12 10:26:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-07-12 10:26:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-07-12 10:26:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-07-12 10:26:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:26:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:26:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:26:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:26:48,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:26:48,397 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:26:48,478 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:26:48,480 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:26:48,717 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:26:48,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:26:48,775 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:26:48,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:26:48 BoogieIcfgContainer [2022-07-12 10:26:48,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:26:48,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:26:48,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:26:48,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:26:48,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:26:48" (1/3) ... [2022-07-12 10:26:48,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f03cee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:26:48, skipping insertion in model container [2022-07-12 10:26:48,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:26:48" (2/3) ... [2022-07-12 10:26:48,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f03cee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:26:48, skipping insertion in model container [2022-07-12 10:26:48,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:26:48" (3/3) ... [2022-07-12 10:26:48,792 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2022-07-12 10:26:48,796 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:26:48,810 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:26:48,811 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:26:48,811 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:26:48,901 INFO L135 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-07-12 10:26:48,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 246 places, 235 transitions, 542 flow [2022-07-12 10:26:49,029 INFO L129 PetriNetUnfolder]: 8/207 cut-off events. [2022-07-12 10:26:49,029 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-12 10:26:49,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 207 events. 8/207 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 241 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 177. Up to 3 conditions per place. [2022-07-12 10:26:49,037 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 235 transitions, 542 flow [2022-07-12 10:26:49,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 198 transitions, 444 flow [2022-07-12 10:26:49,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:26:49,069 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@5f4d7d17, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4162ffb6 [2022-07-12 10:26:49,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-07-12 10:26:49,116 INFO L129 PetriNetUnfolder]: 8/197 cut-off events. [2022-07-12 10:26:49,117 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-12 10:26:49,117 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:49,118 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:49,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-12 10:26:49,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:49,123 INFO L85 PathProgramCache]: Analyzing trace with hash -436231963, now seen corresponding path program 1 times [2022-07-12 10:26:49,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:49,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666858173] [2022-07-12 10:26:49,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:49,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:49,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:49,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666858173] [2022-07-12 10:26:49,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666858173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:49,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:49,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:26:49,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589731012] [2022-07-12 10:26:49,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:49,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:26:49,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:49,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:26:49,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:26:49,589 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-07-12 10:26:49,592 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 198 transitions, 444 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:49,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:49,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-07-12 10:26:49,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:49,906 INFO L129 PetriNetUnfolder]: 354/1315 cut-off events. [2022-07-12 10:26:49,907 INFO L130 PetriNetUnfolder]: For 424/424 co-relation queries the response was YES. [2022-07-12 10:26:49,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2287 conditions, 1315 events. 354/1315 cut-off events. For 424/424 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 7852 event pairs, 170 based on Foata normal form. 41/1228 useless extension candidates. Maximal degree in co-relation 2051. Up to 365 conditions per place. [2022-07-12 10:26:49,920 INFO L132 encePairwiseOnDemand]: 228/239 looper letters, 49 selfloop transitions, 6 changer transitions 3/222 dead transitions. [2022-07-12 10:26:49,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 222 transitions, 670 flow [2022-07-12 10:26:49,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:26:49,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:26:49,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1054 transitions. [2022-07-12 10:26:49,938 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8820083682008368 [2022-07-12 10:26:49,939 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1054 transitions. [2022-07-12 10:26:49,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1054 transitions. [2022-07-12 10:26:49,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:49,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1054 transitions. [2022-07-12 10:26:49,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 210.8) internal successors, (1054), 5 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:49,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:49,955 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:49,957 INFO L186 Difference]: Start difference. First operand has 209 places, 198 transitions, 444 flow. Second operand 5 states and 1054 transitions. [2022-07-12 10:26:49,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 222 transitions, 670 flow [2022-07-12 10:26:49,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 222 transitions, 594 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-07-12 10:26:49,968 INFO L242 Difference]: Finished difference. Result has 202 places, 191 transitions, 416 flow [2022-07-12 10:26:49,969 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=416, PETRI_PLACES=202, PETRI_TRANSITIONS=191} [2022-07-12 10:26:49,974 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, -7 predicate places. [2022-07-12 10:26:49,974 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 191 transitions, 416 flow [2022-07-12 10:26:49,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:49,975 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:49,975 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:49,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:26:49,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-12 10:26:49,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:49,976 INFO L85 PathProgramCache]: Analyzing trace with hash -593111343, now seen corresponding path program 2 times [2022-07-12 10:26:49,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:49,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740496203] [2022-07-12 10:26:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:49,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:50,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:50,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:50,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740496203] [2022-07-12 10:26:50,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740496203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:50,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:50,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:26:50,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640513521] [2022-07-12 10:26:50,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:50,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:26:50,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:50,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:26:50,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:26:50,307 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-07-12 10:26:50,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 191 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:50,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:50,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-07-12 10:26:50,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:50,516 INFO L129 PetriNetUnfolder]: 300/1198 cut-off events. [2022-07-12 10:26:50,516 INFO L130 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2022-07-12 10:26:50,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1829 conditions, 1198 events. 300/1198 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6862 event pairs, 128 based on Foata normal form. 22/1098 useless extension candidates. Maximal degree in co-relation 1402. Up to 289 conditions per place. [2022-07-12 10:26:50,523 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 48 selfloop transitions, 6 changer transitions 1/218 dead transitions. [2022-07-12 10:26:50,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 218 transitions, 607 flow [2022-07-12 10:26:50,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:26:50,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:26:50,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-07-12 10:26:50,526 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8753138075313808 [2022-07-12 10:26:50,526 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-07-12 10:26:50,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-07-12 10:26:50,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:50,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-07-12 10:26:50,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:50,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:50,531 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:50,532 INFO L186 Difference]: Start difference. First operand has 202 places, 191 transitions, 416 flow. Second operand 5 states and 1046 transitions. [2022-07-12 10:26:50,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 218 transitions, 607 flow [2022-07-12 10:26:50,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 218 transitions, 595 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:26:50,537 INFO L242 Difference]: Finished difference. Result has 200 places, 190 transitions, 420 flow [2022-07-12 10:26:50,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2022-07-12 10:26:50,538 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, -9 predicate places. [2022-07-12 10:26:50,538 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 420 flow [2022-07-12 10:26:50,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:50,539 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:50,539 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:50,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:26:50,540 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-12 10:26:50,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:50,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2021275627, now seen corresponding path program 1 times [2022-07-12 10:26:50,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:50,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365663459] [2022-07-12 10:26:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:50,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:50,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:50,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365663459] [2022-07-12 10:26:50,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365663459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:50,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:50,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:26:50,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126164932] [2022-07-12 10:26:50,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:50,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:26:50,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:50,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:26:50,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:26:50,696 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-07-12 10:26:50,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 420 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:50,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:50,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-07-12 10:26:50,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:50,872 INFO L129 PetriNetUnfolder]: 311/1167 cut-off events. [2022-07-12 10:26:50,873 INFO L130 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2022-07-12 10:26:50,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1900 conditions, 1167 events. 311/1167 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6695 event pairs, 141 based on Foata normal form. 11/1085 useless extension candidates. Maximal degree in co-relation 1581. Up to 327 conditions per place. [2022-07-12 10:26:50,881 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 49 selfloop transitions, 6 changer transitions 0/218 dead transitions. [2022-07-12 10:26:50,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 218 transitions, 614 flow [2022-07-12 10:26:50,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:26:50,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:26:50,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-07-12 10:26:50,883 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8753138075313808 [2022-07-12 10:26:50,883 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-07-12 10:26:50,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-07-12 10:26:50,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:50,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-07-12 10:26:50,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:50,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:50,888 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:50,888 INFO L186 Difference]: Start difference. First operand has 200 places, 190 transitions, 420 flow. Second operand 5 states and 1046 transitions. [2022-07-12 10:26:50,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 218 transitions, 614 flow [2022-07-12 10:26:50,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 218 transitions, 602 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:26:50,894 INFO L242 Difference]: Finished difference. Result has 200 places, 190 transitions, 426 flow [2022-07-12 10:26:50,895 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2022-07-12 10:26:50,896 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, -9 predicate places. [2022-07-12 10:26:50,897 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 426 flow [2022-07-12 10:26:50,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:50,897 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:50,898 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:50,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:26:50,898 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-12 10:26:50,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:50,899 INFO L85 PathProgramCache]: Analyzing trace with hash 989998079, now seen corresponding path program 2 times [2022-07-12 10:26:50,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:50,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108255138] [2022-07-12 10:26:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:50,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:51,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:51,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108255138] [2022-07-12 10:26:51,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108255138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:51,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:51,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-12 10:26:51,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879297265] [2022-07-12 10:26:51,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:51,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 10:26:51,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:51,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 10:26:51,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2022-07-12 10:26:51,529 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-07-12 10:26:51,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 426 flow. Second operand has 21 states, 21 states have (on average 165.71428571428572) internal successors, (3480), 21 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:51,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:51,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-07-12 10:26:51,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:54,911 INFO L129 PetriNetUnfolder]: 5258/9715 cut-off events. [2022-07-12 10:26:54,912 INFO L130 PetriNetUnfolder]: For 1673/1673 co-relation queries the response was YES. [2022-07-12 10:26:54,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18897 conditions, 9715 events. 5258/9715 cut-off events. For 1673/1673 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 69625 event pairs, 802 based on Foata normal form. 2/8918 useless extension candidates. Maximal degree in co-relation 18044. Up to 3952 conditions per place. [2022-07-12 10:26:54,982 INFO L132 encePairwiseOnDemand]: 216/239 looper letters, 222 selfloop transitions, 105 changer transitions 31/487 dead transitions. [2022-07-12 10:26:54,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 487 transitions, 1894 flow [2022-07-12 10:26:54,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:26:54,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:26:54,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 6065 transitions. [2022-07-12 10:26:54,994 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7250448296473401 [2022-07-12 10:26:54,994 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 6065 transitions. [2022-07-12 10:26:54,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 6065 transitions. [2022-07-12 10:26:54,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:54,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 6065 transitions. [2022-07-12 10:26:55,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 173.28571428571428) internal successors, (6065), 35 states have internal predecessors, (6065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:55,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 239.0) internal successors, (8604), 36 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:55,017 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 239.0) internal successors, (8604), 36 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:55,018 INFO L186 Difference]: Start difference. First operand has 200 places, 190 transitions, 426 flow. Second operand 35 states and 6065 transitions. [2022-07-12 10:26:55,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 487 transitions, 1894 flow [2022-07-12 10:26:55,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 487 transitions, 1866 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:26:55,025 INFO L242 Difference]: Finished difference. Result has 251 places, 296 transitions, 1012 flow [2022-07-12 10:26:55,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1012, PETRI_PLACES=251, PETRI_TRANSITIONS=296} [2022-07-12 10:26:55,026 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 42 predicate places. [2022-07-12 10:26:55,026 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 296 transitions, 1012 flow [2022-07-12 10:26:55,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 165.71428571428572) internal successors, (3480), 21 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:55,027 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:55,027 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:55,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:26:55,028 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-12 10:26:55,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:55,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1568437147, now seen corresponding path program 3 times [2022-07-12 10:26:55,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:55,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660652842] [2022-07-12 10:26:55,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:55,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:55,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:55,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:55,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660652842] [2022-07-12 10:26:55,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660652842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:55,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:55,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:26:55,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332505478] [2022-07-12 10:26:55,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:55,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:26:55,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:55,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:26:55,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:26:55,190 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 239 [2022-07-12 10:26:55,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 296 transitions, 1012 flow. Second operand has 6 states, 6 states have (on average 199.33333333333334) internal successors, (1196), 6 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:55,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:55,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 239 [2022-07-12 10:26:55,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:55,681 INFO L129 PetriNetUnfolder]: 1428/3922 cut-off events. [2022-07-12 10:26:55,682 INFO L130 PetriNetUnfolder]: For 2141/2160 co-relation queries the response was YES. [2022-07-12 10:26:55,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7851 conditions, 3922 events. 1428/3922 cut-off events. For 2141/2160 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 30082 event pairs, 482 based on Foata normal form. 44/3378 useless extension candidates. Maximal degree in co-relation 7819. Up to 1041 conditions per place. [2022-07-12 10:26:55,718 INFO L132 encePairwiseOnDemand]: 231/239 looper letters, 51 selfloop transitions, 7 changer transitions 0/322 dead transitions. [2022-07-12 10:26:55,719 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 322 transitions, 1210 flow [2022-07-12 10:26:55,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:26:55,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-12 10:26:55,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1229 transitions. [2022-07-12 10:26:55,722 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8570432357043236 [2022-07-12 10:26:55,722 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1229 transitions. [2022-07-12 10:26:55,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1229 transitions. [2022-07-12 10:26:55,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:55,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1229 transitions. [2022-07-12 10:26:55,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.83333333333334) internal successors, (1229), 6 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:55,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:55,729 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:55,729 INFO L186 Difference]: Start difference. First operand has 251 places, 296 transitions, 1012 flow. Second operand 6 states and 1229 transitions. [2022-07-12 10:26:55,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 322 transitions, 1210 flow [2022-07-12 10:26:55,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 322 transitions, 1198 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-07-12 10:26:55,745 INFO L242 Difference]: Finished difference. Result has 247 places, 294 transitions, 1012 flow [2022-07-12 10:26:55,746 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1012, PETRI_PLACES=247, PETRI_TRANSITIONS=294} [2022-07-12 10:26:55,747 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 38 predicate places. [2022-07-12 10:26:55,748 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 294 transitions, 1012 flow [2022-07-12 10:26:55,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 199.33333333333334) internal successors, (1196), 6 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:55,749 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:55,749 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:55,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:26:55,749 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-12 10:26:55,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:55,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1338714575, now seen corresponding path program 4 times [2022-07-12 10:26:55,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:55,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466607581] [2022-07-12 10:26:55,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:55,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:56,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:56,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:56,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466607581] [2022-07-12 10:26:56,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466607581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:56,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:56,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-12 10:26:56,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842959720] [2022-07-12 10:26:56,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:56,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 10:26:56,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:56,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 10:26:56,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-07-12 10:26:56,255 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-07-12 10:26:56,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 294 transitions, 1012 flow. Second operand has 23 states, 23 states have (on average 165.47826086956522) internal successors, (3806), 23 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:56,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:56,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-07-12 10:26:56,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:59,236 INFO L129 PetriNetUnfolder]: 5419/10357 cut-off events. [2022-07-12 10:26:59,236 INFO L130 PetriNetUnfolder]: For 13991/13991 co-relation queries the response was YES. [2022-07-12 10:26:59,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28485 conditions, 10357 events. 5419/10357 cut-off events. For 13991/13991 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 75405 event pairs, 1450 based on Foata normal form. 1/9502 useless extension candidates. Maximal degree in co-relation 27167. Up to 4719 conditions per place. [2022-07-12 10:26:59,331 INFO L132 encePairwiseOnDemand]: 214/239 looper letters, 278 selfloop transitions, 118 changer transitions 23/548 dead transitions. [2022-07-12 10:26:59,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 548 transitions, 3017 flow [2022-07-12 10:26:59,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-12 10:26:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-12 10:26:59,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5716 transitions. [2022-07-12 10:26:59,341 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7247369088373272 [2022-07-12 10:26:59,342 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5716 transitions. [2022-07-12 10:26:59,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5716 transitions. [2022-07-12 10:26:59,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:59,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5716 transitions. [2022-07-12 10:26:59,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 173.21212121212122) internal successors, (5716), 33 states have internal predecessors, (5716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:59,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 239.0) internal successors, (8126), 34 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:59,365 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 239.0) internal successors, (8126), 34 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:59,365 INFO L186 Difference]: Start difference. First operand has 247 places, 294 transitions, 1012 flow. Second operand 33 states and 5716 transitions. [2022-07-12 10:26:59,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 548 transitions, 3017 flow [2022-07-12 10:26:59,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 548 transitions, 2997 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-12 10:26:59,484 INFO L242 Difference]: Finished difference. Result has 292 places, 367 transitions, 1759 flow [2022-07-12 10:26:59,484 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1759, PETRI_PLACES=292, PETRI_TRANSITIONS=367} [2022-07-12 10:26:59,486 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 83 predicate places. [2022-07-12 10:26:59,486 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 367 transitions, 1759 flow [2022-07-12 10:26:59,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 165.47826086956522) internal successors, (3806), 23 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:59,492 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:59,492 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:59,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:26:59,493 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-12 10:26:59,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:59,493 INFO L85 PathProgramCache]: Analyzing trace with hash 738858935, now seen corresponding path program 5 times [2022-07-12 10:26:59,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:59,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456265673] [2022-07-12 10:26:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:59,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:59,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:59,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:59,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456265673] [2022-07-12 10:26:59,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456265673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:59,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:59,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-12 10:26:59,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46981980] [2022-07-12 10:26:59,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:59,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-12 10:26:59,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:59,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-12 10:26:59,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2022-07-12 10:26:59,959 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-07-12 10:26:59,962 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 367 transitions, 1759 flow. Second operand has 25 states, 25 states have (on average 165.28) internal successors, (4132), 25 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:59,962 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:59,962 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-07-12 10:26:59,962 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:03,850 INFO L129 PetriNetUnfolder]: 6663/13005 cut-off events. [2022-07-12 10:27:03,850 INFO L130 PetriNetUnfolder]: For 37279/37279 co-relation queries the response was YES. [2022-07-12 10:27:04,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42554 conditions, 13005 events. 6663/13005 cut-off events. For 37279/37279 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 101680 event pairs, 2001 based on Foata normal form. 1/11905 useless extension candidates. Maximal degree in co-relation 42496. Up to 6337 conditions per place. [2022-07-12 10:27:04,070 INFO L132 encePairwiseOnDemand]: 214/239 looper letters, 471 selfloop transitions, 153 changer transitions 22/775 dead transitions. [2022-07-12 10:27:04,070 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 775 transitions, 5097 flow [2022-07-12 10:27:04,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-12 10:27:04,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-07-12 10:27:04,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8938 transitions. [2022-07-12 10:27:04,081 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7191824911490183 [2022-07-12 10:27:04,081 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8938 transitions. [2022-07-12 10:27:04,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8938 transitions. [2022-07-12 10:27:04,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:04,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8938 transitions. [2022-07-12 10:27:04,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 171.8846153846154) internal successors, (8938), 52 states have internal predecessors, (8938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:04,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 239.0) internal successors, (12667), 53 states have internal predecessors, (12667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:04,110 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 239.0) internal successors, (12667), 53 states have internal predecessors, (12667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:04,111 INFO L186 Difference]: Start difference. First operand has 292 places, 367 transitions, 1759 flow. Second operand 52 states and 8938 transitions. [2022-07-12 10:27:04,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 775 transitions, 5097 flow [2022-07-12 10:27:04,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 775 transitions, 4872 flow, removed 87 selfloop flow, removed 7 redundant places. [2022-07-12 10:27:04,205 INFO L242 Difference]: Finished difference. Result has 346 places, 491 transitions, 3010 flow [2022-07-12 10:27:04,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=3010, PETRI_PLACES=346, PETRI_TRANSITIONS=491} [2022-07-12 10:27:04,207 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 137 predicate places. [2022-07-12 10:27:04,208 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 491 transitions, 3010 flow [2022-07-12 10:27:04,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 165.28) internal successors, (4132), 25 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:04,209 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:04,209 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:04,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:27:04,210 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-12 10:27:04,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:04,210 INFO L85 PathProgramCache]: Analyzing trace with hash 2118239061, now seen corresponding path program 6 times [2022-07-12 10:27:04,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:04,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372683263] [2022-07-12 10:27:04,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:04,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:04,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:04,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372683263] [2022-07-12 10:27:04,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372683263] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:04,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:04,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-07-12 10:27:04,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082591196] [2022-07-12 10:27:04,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:04,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-12 10:27:04,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:04,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-12 10:27:04,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-07-12 10:27:04,948 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-07-12 10:27:04,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 491 transitions, 3010 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:04,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:04,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-07-12 10:27:04,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:11,620 INFO L129 PetriNetUnfolder]: 9115/17769 cut-off events. [2022-07-12 10:27:11,620 INFO L130 PetriNetUnfolder]: For 67849/67849 co-relation queries the response was YES. [2022-07-12 10:27:11,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63605 conditions, 17769 events. 9115/17769 cut-off events. For 67849/67849 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 145045 event pairs, 2596 based on Foata normal form. 1/16357 useless extension candidates. Maximal degree in co-relation 63530. Up to 8014 conditions per place. [2022-07-12 10:27:11,816 INFO L132 encePairwiseOnDemand]: 210/239 looper letters, 657 selfloop transitions, 300 changer transitions 15/1095 dead transitions. [2022-07-12 10:27:11,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 1095 transitions, 8865 flow [2022-07-12 10:27:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-07-12 10:27:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-07-12 10:27:11,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 10692 transitions. [2022-07-12 10:27:11,824 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.688252333440618 [2022-07-12 10:27:11,825 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 10692 transitions. [2022-07-12 10:27:11,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 10692 transitions. [2022-07-12 10:27:11,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:11,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 10692 transitions. [2022-07-12 10:27:11,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 164.4923076923077) internal successors, (10692), 65 states have internal predecessors, (10692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:11,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 239.0) internal successors, (15774), 66 states have internal predecessors, (15774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:11,857 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 239.0) internal successors, (15774), 66 states have internal predecessors, (15774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:11,858 INFO L186 Difference]: Start difference. First operand has 346 places, 491 transitions, 3010 flow. Second operand 65 states and 10692 transitions. [2022-07-12 10:27:11,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 1095 transitions, 8865 flow [2022-07-12 10:27:12,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 1095 transitions, 8189 flow, removed 336 selfloop flow, removed 5 redundant places. [2022-07-12 10:27:12,439 INFO L242 Difference]: Finished difference. Result has 428 places, 740 transitions, 5602 flow [2022-07-12 10:27:12,439 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=5602, PETRI_PLACES=428, PETRI_TRANSITIONS=740} [2022-07-12 10:27:12,440 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 219 predicate places. [2022-07-12 10:27:12,440 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 740 transitions, 5602 flow [2022-07-12 10:27:12,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:12,441 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:12,441 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:12,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:27:12,442 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-12 10:27:12,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:12,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1612794211, now seen corresponding path program 7 times [2022-07-12 10:27:12,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:12,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707759493] [2022-07-12 10:27:12,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:12,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:13,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:13,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:13,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707759493] [2022-07-12 10:27:13,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707759493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:13,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:13,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-07-12 10:27:13,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248603608] [2022-07-12 10:27:13,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:13,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-12 10:27:13,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:13,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-12 10:27:13,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-07-12 10:27:13,058 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-07-12 10:27:13,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 740 transitions, 5602 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:13,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:13,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-07-12 10:27:13,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:20,814 INFO L129 PetriNetUnfolder]: 10813/20899 cut-off events. [2022-07-12 10:27:20,814 INFO L130 PetriNetUnfolder]: For 111406/111406 co-relation queries the response was YES. [2022-07-12 10:27:21,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81769 conditions, 20899 events. 10813/20899 cut-off events. For 111406/111406 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 173817 event pairs, 2550 based on Foata normal form. 1/19277 useless extension candidates. Maximal degree in co-relation 81664. Up to 9278 conditions per place. [2022-07-12 10:27:21,159 INFO L132 encePairwiseOnDemand]: 210/239 looper letters, 805 selfloop transitions, 438 changer transitions 15/1381 dead transitions. [2022-07-12 10:27:21,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 1381 transitions, 13234 flow [2022-07-12 10:27:21,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-07-12 10:27:21,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-07-12 10:27:21,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 14656 transitions. [2022-07-12 10:27:21,177 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6813575081357508 [2022-07-12 10:27:21,177 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 14656 transitions. [2022-07-12 10:27:21,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 14656 transitions. [2022-07-12 10:27:21,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:21,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 14656 transitions. [2022-07-12 10:27:21,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 162.84444444444443) internal successors, (14656), 90 states have internal predecessors, (14656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:21,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 239.0) internal successors, (21749), 91 states have internal predecessors, (21749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:21,222 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 239.0) internal successors, (21749), 91 states have internal predecessors, (21749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:21,222 INFO L186 Difference]: Start difference. First operand has 428 places, 740 transitions, 5602 flow. Second operand 90 states and 14656 transitions. [2022-07-12 10:27:21,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 1381 transitions, 13234 flow [2022-07-12 10:27:21,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 1381 transitions, 12482 flow, removed 374 selfloop flow, removed 5 redundant places. [2022-07-12 10:27:21,708 INFO L242 Difference]: Finished difference. Result has 544 places, 1013 transitions, 9073 flow [2022-07-12 10:27:21,708 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=4860, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=9073, PETRI_PLACES=544, PETRI_TRANSITIONS=1013} [2022-07-12 10:27:21,709 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 335 predicate places. [2022-07-12 10:27:21,709 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 1013 transitions, 9073 flow [2022-07-12 10:27:21,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:21,710 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:21,710 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:21,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:27:21,710 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-12 10:27:21,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:21,710 INFO L85 PathProgramCache]: Analyzing trace with hash -986311525, now seen corresponding path program 8 times [2022-07-12 10:27:21,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:21,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624289174] [2022-07-12 10:27:21,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:21,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:22,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:22,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:22,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624289174] [2022-07-12 10:27:22,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624289174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:22,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:22,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-12 10:27:22,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969852920] [2022-07-12 10:27:22,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:22,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-12 10:27:22,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:22,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-12 10:27:22,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2022-07-12 10:27:22,233 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-07-12 10:27:22,235 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 1013 transitions, 9073 flow. Second operand has 25 states, 25 states have (on average 165.28) internal successors, (4132), 25 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:22,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:22,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-07-12 10:27:22,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:29,375 INFO L129 PetriNetUnfolder]: 12043/23215 cut-off events. [2022-07-12 10:27:29,375 INFO L130 PetriNetUnfolder]: For 281308/281352 co-relation queries the response was YES. [2022-07-12 10:27:29,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102912 conditions, 23215 events. 12043/23215 cut-off events. For 281308/281352 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 199581 event pairs, 2589 based on Foata normal form. 7/21284 useless extension candidates. Maximal degree in co-relation 102769. Up to 10034 conditions per place. [2022-07-12 10:27:29,849 INFO L132 encePairwiseOnDemand]: 214/239 looper letters, 794 selfloop transitions, 490 changer transitions 20/1443 dead transitions. [2022-07-12 10:27:29,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 1443 transitions, 15893 flow [2022-07-12 10:27:29,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-12 10:27:29,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-07-12 10:27:29,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 6951 transitions. [2022-07-12 10:27:29,854 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.727092050209205 [2022-07-12 10:27:29,854 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 6951 transitions. [2022-07-12 10:27:29,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 6951 transitions. [2022-07-12 10:27:29,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:29,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 6951 transitions. [2022-07-12 10:27:29,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 173.775) internal successors, (6951), 40 states have internal predecessors, (6951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:29,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 239.0) internal successors, (9799), 41 states have internal predecessors, (9799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:29,866 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 239.0) internal successors, (9799), 41 states have internal predecessors, (9799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:29,866 INFO L186 Difference]: Start difference. First operand has 544 places, 1013 transitions, 9073 flow. Second operand 40 states and 6951 transitions. [2022-07-12 10:27:29,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 1443 transitions, 15893 flow [2022-07-12 10:27:31,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 1443 transitions, 14288 flow, removed 796 selfloop flow, removed 5 redundant places. [2022-07-12 10:27:31,142 INFO L242 Difference]: Finished difference. Result has 592 places, 1181 transitions, 11129 flow [2022-07-12 10:27:31,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=7516, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1013, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=11129, PETRI_PLACES=592, PETRI_TRANSITIONS=1181} [2022-07-12 10:27:31,144 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 383 predicate places. [2022-07-12 10:27:31,144 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 1181 transitions, 11129 flow [2022-07-12 10:27:31,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 165.28) internal successors, (4132), 25 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:31,145 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:31,145 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:31,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:27:31,145 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-12 10:27:31,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:31,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1593302151, now seen corresponding path program 9 times [2022-07-12 10:27:31,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:31,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645539138] [2022-07-12 10:27:31,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:31,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:31,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:31,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645539138] [2022-07-12 10:27:31,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645539138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:31,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:31,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-07-12 10:27:31,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880875105] [2022-07-12 10:27:31,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:31,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-12 10:27:31,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:31,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-12 10:27:31,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2022-07-12 10:27:31,795 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-07-12 10:27:31,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 1181 transitions, 11129 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:31,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:31,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-07-12 10:27:31,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:42,403 INFO L129 PetriNetUnfolder]: 15448/29157 cut-off events. [2022-07-12 10:27:42,403 INFO L130 PetriNetUnfolder]: For 463788/463788 co-relation queries the response was YES. [2022-07-12 10:27:43,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142634 conditions, 29157 events. 15448/29157 cut-off events. For 463788/463788 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 252005 event pairs, 3045 based on Foata normal form. 1/26927 useless extension candidates. Maximal degree in co-relation 142472. Up to 11674 conditions per place. [2022-07-12 10:27:43,350 INFO L132 encePairwiseOnDemand]: 210/239 looper letters, 1061 selfloop transitions, 789 changer transitions 15/1988 dead transitions. [2022-07-12 10:27:43,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 1988 transitions, 25810 flow [2022-07-12 10:27:43,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-07-12 10:27:43,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2022-07-12 10:27:43,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 12469 transitions. [2022-07-12 10:27:43,363 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.686467738383616 [2022-07-12 10:27:43,363 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 12469 transitions. [2022-07-12 10:27:43,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 12469 transitions. [2022-07-12 10:27:43,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:43,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 12469 transitions. [2022-07-12 10:27:43,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 164.06578947368422) internal successors, (12469), 76 states have internal predecessors, (12469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:43,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 239.0) internal successors, (18403), 77 states have internal predecessors, (18403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:43,402 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 239.0) internal successors, (18403), 77 states have internal predecessors, (18403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:43,403 INFO L186 Difference]: Start difference. First operand has 592 places, 1181 transitions, 11129 flow. Second operand 76 states and 12469 transitions. [2022-07-12 10:27:43,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 1988 transitions, 25810 flow [2022-07-12 10:27:45,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 1988 transitions, 24293 flow, removed 719 selfloop flow, removed 6 redundant places. [2022-07-12 10:27:45,764 INFO L242 Difference]: Finished difference. Result has 696 places, 1623 transitions, 19531 flow [2022-07-12 10:27:45,766 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=10440, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=735, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=19531, PETRI_PLACES=696, PETRI_TRANSITIONS=1623} [2022-07-12 10:27:45,766 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 487 predicate places. [2022-07-12 10:27:45,766 INFO L495 AbstractCegarLoop]: Abstraction has has 696 places, 1623 transitions, 19531 flow [2022-07-12 10:27:45,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:45,767 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:45,767 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:45,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:27:45,768 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-12 10:27:45,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:45,768 INFO L85 PathProgramCache]: Analyzing trace with hash -396270431, now seen corresponding path program 10 times [2022-07-12 10:27:45,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:45,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613749740] [2022-07-12 10:27:45,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:45,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:46,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:46,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613749740] [2022-07-12 10:27:46,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613749740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:46,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:46,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-07-12 10:27:46,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951826803] [2022-07-12 10:27:46,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:46,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-12 10:27:46,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:46,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-12 10:27:46,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=790, Unknown=0, NotChecked=0, Total=870 [2022-07-12 10:27:46,420 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-07-12 10:27:46,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 1623 transitions, 19531 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:46,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:46,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-07-12 10:27:46,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:00,301 INFO L129 PetriNetUnfolder]: 17119/32568 cut-off events. [2022-07-12 10:28:00,301 INFO L130 PetriNetUnfolder]: For 717998/717998 co-relation queries the response was YES. [2022-07-12 10:28:02,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168876 conditions, 32568 events. 17119/32568 cut-off events. For 717998/717998 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 287386 event pairs, 3368 based on Foata normal form. 1/30069 useless extension candidates. Maximal degree in co-relation 168672. Up to 12884 conditions per place. [2022-07-12 10:28:02,344 INFO L132 encePairwiseOnDemand]: 210/239 looper letters, 1368 selfloop transitions, 627 changer transitions 15/2133 dead transitions. [2022-07-12 10:28:02,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 757 places, 2133 transitions, 29296 flow [2022-07-12 10:28:02,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-07-12 10:28:02,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-07-12 10:28:02,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 10466 transitions. [2022-07-12 10:28:02,353 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6842311715481172 [2022-07-12 10:28:02,354 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 10466 transitions. [2022-07-12 10:28:02,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 10466 transitions. [2022-07-12 10:28:02,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:02,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 10466 transitions. [2022-07-12 10:28:02,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 163.53125) internal successors, (10466), 64 states have internal predecessors, (10466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:02,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 239.0) internal successors, (15535), 65 states have internal predecessors, (15535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:02,381 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 239.0) internal successors, (15535), 65 states have internal predecessors, (15535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:02,382 INFO L186 Difference]: Start difference. First operand has 696 places, 1623 transitions, 19531 flow. Second operand 64 states and 10466 transitions. [2022-07-12 10:28:02,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 757 places, 2133 transitions, 29296 flow