./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-prod-cons3.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/popl20-prod-cons3.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 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:38:30,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:38:30,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:38:30,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:38:30,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:38:30,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:38:30,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:38:30,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:38:30,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:38:30,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:38:30,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:38:30,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:38:30,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:38:30,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:38:30,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:38:30,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:38:30,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:38:30,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:38:30,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:38:30,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:38:30,503 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:38:30,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:38:30,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:38:30,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:38:30,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:38:30,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:38:30,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:38:30,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:38:30,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:38:30,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:38:30,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:38:30,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:38:30,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:38:30,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:38:30,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:38:30,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:38:30,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:38:30,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:38:30,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:38:30,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:38:30,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:38:30,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:38:30,517 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:38:30,534 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:38:30,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:38:30,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:38:30,534 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:38:30,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:38:30,535 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:38:30,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:38:30,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:38:30,535 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:38:30,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:38:30,536 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:38:30,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:38:30,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:38:30,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:38:30,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:38:30,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:38:30,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:38:30,537 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:38:30,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:38:30,537 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:38:30,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:38:30,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:38:30,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:38:30,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:38:30,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:38:30,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:38:30,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:38:30,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:38:30,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:38:30,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:38:30,539 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:38:30,539 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:38:30,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:38:30,539 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b [2022-07-12 10:38:30,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:38:30,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:38:30,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:38:30,732 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:38:30,732 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:38:30,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2022-07-12 10:38:30,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d6a8d84a/fd926b48af564af4b698675b616825dd/FLAG151af7d62 [2022-07-12 10:38:31,115 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:38:31,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2022-07-12 10:38:31,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d6a8d84a/fd926b48af564af4b698675b616825dd/FLAG151af7d62 [2022-07-12 10:38:31,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d6a8d84a/fd926b48af564af4b698675b616825dd [2022-07-12 10:38:31,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:38:31,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:38:31,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:38:31,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:38:31,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:38:31,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:38:31" (1/1) ... [2022-07-12 10:38:31,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d1e0d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:38:31, skipping insertion in model container [2022-07-12 10:38:31,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:38:31" (1/1) ... [2022-07-12 10:38:31,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:38:31,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:38:31,367 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/popl20-prod-cons3.wvr.c[4007,4020] [2022-07-12 10:38:31,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:38:31,380 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:38:31,418 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/popl20-prod-cons3.wvr.c[4007,4020] [2022-07-12 10:38:31,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:38:31,435 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:38:31,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:38:31 WrapperNode [2022-07-12 10:38:31,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:38:31,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:38:31,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:38:31,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:38:31,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:38:31" (1/1) ... [2022-07-12 10:38:31,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:38:31" (1/1) ... [2022-07-12 10:38:31,476 INFO L137 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 267 [2022-07-12 10:38:31,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:38:31,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:38:31,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:38:31,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:38:31,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:38:31" (1/1) ... [2022-07-12 10:38:31,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:38:31" (1/1) ... [2022-07-12 10:38:31,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:38:31" (1/1) ... [2022-07-12 10:38:31,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:38:31" (1/1) ... [2022-07-12 10:38:31,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:38:31" (1/1) ... [2022-07-12 10:38:31,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:38:31" (1/1) ... [2022-07-12 10:38:31,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:38:31" (1/1) ... [2022-07-12 10:38:31,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:38:31,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:38:31,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:38:31,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:38:31,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:38:31" (1/1) ... [2022-07-12 10:38:31,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:38:31,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:38:31,538 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 10:38:31,541 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 10:38:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:38:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:38:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:38:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:38:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:38:31,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:38:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:38:31,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:38:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:38:31,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:38:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-12 10:38:31,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-12 10:38:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:38:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:38:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:38:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:38:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:38:31,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:38:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:38:31,564 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 10:38:31,629 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:38:31,630 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:38:31,918 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:38:32,008 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:38:32,009 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-12 10:38:32,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:38:32 BoogieIcfgContainer [2022-07-12 10:38:32,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:38:32,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:38:32,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:38:32,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:38:32,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:38:31" (1/3) ... [2022-07-12 10:38:32,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d340acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:38:32, skipping insertion in model container [2022-07-12 10:38:32,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:38:31" (2/3) ... [2022-07-12 10:38:32,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d340acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:38:32, skipping insertion in model container [2022-07-12 10:38:32,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:38:32" (3/3) ... [2022-07-12 10:38:32,026 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2022-07-12 10:38:32,034 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:38:32,040 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:38:32,040 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:38:32,040 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:38:32,124 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-12 10:38:32,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 234 places, 239 transitions, 510 flow [2022-07-12 10:38:32,233 INFO L129 PetriNetUnfolder]: 18/235 cut-off events. [2022-07-12 10:38:32,233 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:38:32,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 235 events. 18/235 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 128 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 201. Up to 3 conditions per place. [2022-07-12 10:38:32,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 239 transitions, 510 flow [2022-07-12 10:38:32,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 222 transitions, 468 flow [2022-07-12 10:38:32,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:38:32,264 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@3e1dedb7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7285492d [2022-07-12 10:38:32,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-12 10:38:32,304 INFO L129 PetriNetUnfolder]: 18/221 cut-off events. [2022-07-12 10:38:32,304 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:38:32,304 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:38:32,305 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] [2022-07-12 10:38:32,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:38:32,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:38:32,312 INFO L85 PathProgramCache]: Analyzing trace with hash -831511026, now seen corresponding path program 1 times [2022-07-12 10:38:32,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:38:32,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091650353] [2022-07-12 10:38:32,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:38:32,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:38:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:38:32,587 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 10:38:32,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:38:32,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091650353] [2022-07-12 10:38:32,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091650353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:38:32,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:38:32,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:38:32,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319284906] [2022-07-12 10:38:32,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:38:32,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:38:32,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:38:32,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:38:32,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:38:32,619 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 239 [2022-07-12 10:38:32,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 222 transitions, 468 flow. Second operand has 2 states, 2 states have (on average 218.5) internal successors, (437), 2 states have internal predecessors, (437), 0 states have call successors, (0), 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 10:38:32,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:38:32,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 239 [2022-07-12 10:38:32,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:38:32,715 INFO L129 PetriNetUnfolder]: 101/488 cut-off events. [2022-07-12 10:38:32,716 INFO L130 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-07-12 10:38:32,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 488 events. 101/488 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1671 event pairs, 45 based on Foata normal form. 88/515 useless extension candidates. Maximal degree in co-relation 480. Up to 133 conditions per place. [2022-07-12 10:38:32,723 INFO L132 encePairwiseOnDemand]: 227/239 looper letters, 12 selfloop transitions, 0 changer transitions 7/210 dead transitions. [2022-07-12 10:38:32,723 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 210 transitions, 468 flow [2022-07-12 10:38:32,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:38:32,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:38:32,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 452 transitions. [2022-07-12 10:38:32,737 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9456066945606695 [2022-07-12 10:38:32,737 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 452 transitions. [2022-07-12 10:38:32,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 452 transitions. [2022-07-12 10:38:32,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:38:32,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 452 transitions. [2022-07-12 10:38:32,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 226.0) internal successors, (452), 2 states have internal predecessors, (452), 0 states have call successors, (0), 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 10:38:32,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 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 10:38:32,751 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 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 10:38:32,752 INFO L186 Difference]: Start difference. First operand has 217 places, 222 transitions, 468 flow. Second operand 2 states and 452 transitions. [2022-07-12 10:38:32,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 210 transitions, 468 flow [2022-07-12 10:38:32,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 210 transitions, 452 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-12 10:38:32,761 INFO L242 Difference]: Finished difference. Result has 210 places, 203 transitions, 414 flow [2022-07-12 10:38:32,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=414, PETRI_PLACES=210, PETRI_TRANSITIONS=203} [2022-07-12 10:38:32,765 INFO L279 CegarLoopForPetriNet]: 217 programPoint places, -7 predicate places. [2022-07-12 10:38:32,766 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 203 transitions, 414 flow [2022-07-12 10:38:32,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 218.5) internal successors, (437), 2 states have internal predecessors, (437), 0 states have call successors, (0), 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 10:38:32,766 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:38:32,767 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] [2022-07-12 10:38:32,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:38:32,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:38:32,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:38:32,768 INFO L85 PathProgramCache]: Analyzing trace with hash -632552533, now seen corresponding path program 1 times [2022-07-12 10:38:32,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:38:32,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111092580] [2022-07-12 10:38:32,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:38:32,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:38:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:38:32,964 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 10:38:32,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:38:32,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111092580] [2022-07-12 10:38:32,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111092580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:38:32,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:38:32,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:38:32,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277057788] [2022-07-12 10:38:32,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:38:32,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:38:32,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:38:32,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:38:32,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:38:32,968 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 239 [2022-07-12 10:38:32,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 203 transitions, 414 flow. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 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 10:38:32,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:38:32,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 239 [2022-07-12 10:38:32,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:38:33,191 INFO L129 PetriNetUnfolder]: 692/1436 cut-off events. [2022-07-12 10:38:33,192 INFO L130 PetriNetUnfolder]: For 110/111 co-relation queries the response was YES. [2022-07-12 10:38:33,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 1436 events. 692/1436 cut-off events. For 110/111 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7668 event pairs, 65 based on Foata normal form. 0/1365 useless extension candidates. Maximal degree in co-relation 2455. Up to 335 conditions per place. [2022-07-12 10:38:33,202 INFO L132 encePairwiseOnDemand]: 234/239 looper letters, 51 selfloop transitions, 5 changer transitions 0/236 dead transitions. [2022-07-12 10:38:33,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 236 transitions, 599 flow [2022-07-12 10:38:33,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:38:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:38:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1073 transitions. [2022-07-12 10:38:33,205 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.897907949790795 [2022-07-12 10:38:33,205 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1073 transitions. [2022-07-12 10:38:33,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1073 transitions. [2022-07-12 10:38:33,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:38:33,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1073 transitions. [2022-07-12 10:38:33,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.6) internal successors, (1073), 5 states have internal predecessors, (1073), 0 states have call successors, (0), 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 10:38:33,210 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 10:38:33,211 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 10:38:33,211 INFO L186 Difference]: Start difference. First operand has 210 places, 203 transitions, 414 flow. Second operand 5 states and 1073 transitions. [2022-07-12 10:38:33,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 236 transitions, 599 flow [2022-07-12 10:38:33,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 236 transitions, 599 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:38:33,220 INFO L242 Difference]: Finished difference. Result has 210 places, 206 transitions, 445 flow [2022-07-12 10:38:33,221 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=445, PETRI_PLACES=210, PETRI_TRANSITIONS=206} [2022-07-12 10:38:33,222 INFO L279 CegarLoopForPetriNet]: 217 programPoint places, -7 predicate places. [2022-07-12 10:38:33,222 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 206 transitions, 445 flow [2022-07-12 10:38:33,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 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 10:38:33,223 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:38:33,223 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] [2022-07-12 10:38:33,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:38:33,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:38:33,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:38:33,225 INFO L85 PathProgramCache]: Analyzing trace with hash -189720709, now seen corresponding path program 2 times [2022-07-12 10:38:33,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:38:33,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48618518] [2022-07-12 10:38:33,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:38:33,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:38:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:38:33,333 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 10:38:33,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:38:33,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48618518] [2022-07-12 10:38:33,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48618518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:38:33,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:38:33,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:38:33,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319174598] [2022-07-12 10:38:33,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:38:33,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:38:33,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:38:33,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:38:33,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:38:33,340 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 239 [2022-07-12 10:38:33,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 206 transitions, 445 flow. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 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 10:38:33,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:38:33,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 239 [2022-07-12 10:38:33,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:38:33,591 INFO L129 PetriNetUnfolder]: 827/1769 cut-off events. [2022-07-12 10:38:33,591 INFO L130 PetriNetUnfolder]: For 491/492 co-relation queries the response was YES. [2022-07-12 10:38:33,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3425 conditions, 1769 events. 827/1769 cut-off events. For 491/492 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 10643 event pairs, 194 based on Foata normal form. 0/1658 useless extension candidates. Maximal degree in co-relation 3418. Up to 437 conditions per place. [2022-07-12 10:38:33,603 INFO L132 encePairwiseOnDemand]: 234/239 looper letters, 50 selfloop transitions, 7 changer transitions 0/237 dead transitions. [2022-07-12 10:38:33,603 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 237 transitions, 648 flow [2022-07-12 10:38:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:38:33,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:38:33,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1070 transitions. [2022-07-12 10:38:33,605 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.895397489539749 [2022-07-12 10:38:33,605 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1070 transitions. [2022-07-12 10:38:33,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1070 transitions. [2022-07-12 10:38:33,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:38:33,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1070 transitions. [2022-07-12 10:38:33,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 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 10:38:33,609 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 10:38:33,610 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 10:38:33,610 INFO L186 Difference]: Start difference. First operand has 210 places, 206 transitions, 445 flow. Second operand 5 states and 1070 transitions. [2022-07-12 10:38:33,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 237 transitions, 648 flow [2022-07-12 10:38:33,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 237 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:38:33,614 INFO L242 Difference]: Finished difference. Result has 216 places, 210 transitions, 488 flow [2022-07-12 10:38:33,615 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=488, PETRI_PLACES=216, PETRI_TRANSITIONS=210} [2022-07-12 10:38:33,615 INFO L279 CegarLoopForPetriNet]: 217 programPoint places, -1 predicate places. [2022-07-12 10:38:33,615 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 210 transitions, 488 flow [2022-07-12 10:38:33,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 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 10:38:33,616 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:38:33,616 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] [2022-07-12 10:38:33,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:38:33,617 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:38:33,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:38:33,617 INFO L85 PathProgramCache]: Analyzing trace with hash 191830465, now seen corresponding path program 3 times [2022-07-12 10:38:33,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:38:33,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762618244] [2022-07-12 10:38:33,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:38:33,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:38:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:38:33,756 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 10:38:33,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:38:33,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762618244] [2022-07-12 10:38:33,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762618244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:38:33,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:38:33,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:38:33,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916354121] [2022-07-12 10:38:33,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:38:33,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:38:33,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:38:33,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:38:33,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:38:33,760 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 239 [2022-07-12 10:38:33,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 210 transitions, 488 flow. Second operand has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 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 10:38:33,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:38:33,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 239 [2022-07-12 10:38:33,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:38:34,378 INFO L129 PetriNetUnfolder]: 2190/4251 cut-off events. [2022-07-12 10:38:34,378 INFO L130 PetriNetUnfolder]: For 2158/2158 co-relation queries the response was YES. [2022-07-12 10:38:34,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9405 conditions, 4251 events. 2190/4251 cut-off events. For 2158/2158 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 31328 event pairs, 316 based on Foata normal form. 72/4239 useless extension candidates. Maximal degree in co-relation 9395. Up to 1072 conditions per place. [2022-07-12 10:38:34,404 INFO L132 encePairwiseOnDemand]: 228/239 looper letters, 91 selfloop transitions, 12 changer transitions 3/254 dead transitions. [2022-07-12 10:38:34,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 254 transitions, 844 flow [2022-07-12 10:38:34,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:38:34,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:38:34,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1735 transitions. [2022-07-12 10:38:34,407 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7259414225941423 [2022-07-12 10:38:34,409 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1735 transitions. [2022-07-12 10:38:34,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1735 transitions. [2022-07-12 10:38:34,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:38:34,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1735 transitions. [2022-07-12 10:38:34,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 173.5) internal successors, (1735), 10 states have internal predecessors, (1735), 0 states have call successors, (0), 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 10:38:34,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 239.0) internal successors, (2629), 11 states have internal predecessors, (2629), 0 states have call successors, (0), 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 10:38:34,417 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 239.0) internal successors, (2629), 11 states have internal predecessors, (2629), 0 states have call successors, (0), 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 10:38:34,417 INFO L186 Difference]: Start difference. First operand has 216 places, 210 transitions, 488 flow. Second operand 10 states and 1735 transitions. [2022-07-12 10:38:34,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 254 transitions, 844 flow [2022-07-12 10:38:34,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 254 transitions, 836 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:38:34,428 INFO L242 Difference]: Finished difference. Result has 226 places, 213 transitions, 544 flow [2022-07-12 10:38:34,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=544, PETRI_PLACES=226, PETRI_TRANSITIONS=213} [2022-07-12 10:38:34,430 INFO L279 CegarLoopForPetriNet]: 217 programPoint places, 9 predicate places. [2022-07-12 10:38:34,430 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 213 transitions, 544 flow [2022-07-12 10:38:34,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.75) internal successors, (1358), 8 states have internal predecessors, (1358), 0 states have call successors, (0), 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 10:38:34,431 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:38:34,431 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] [2022-07-12 10:38:34,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:38:34,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:38:34,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:38:34,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1836505014, now seen corresponding path program 1 times [2022-07-12 10:38:34,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:38:34,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512315801] [2022-07-12 10:38:34,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:38:34,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:38:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:38:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:38:34,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:38:34,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512315801] [2022-07-12 10:38:34,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512315801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:38:34,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:38:34,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:38:34,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641649131] [2022-07-12 10:38:34,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:38:34,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:38:34,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:38:34,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:38:34,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:38:34,576 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 239 [2022-07-12 10:38:34,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 213 transitions, 544 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 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 10:38:34,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:38:34,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 239 [2022-07-12 10:38:34,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:38:34,705 INFO L129 PetriNetUnfolder]: 367/1217 cut-off events. [2022-07-12 10:38:34,705 INFO L130 PetriNetUnfolder]: For 465/465 co-relation queries the response was YES. [2022-07-12 10:38:34,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2220 conditions, 1217 events. 367/1217 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7429 event pairs, 99 based on Foata normal form. 20/1165 useless extension candidates. Maximal degree in co-relation 2208. Up to 398 conditions per place. [2022-07-12 10:38:34,714 INFO L132 encePairwiseOnDemand]: 236/239 looper letters, 20 selfloop transitions, 2 changer transitions 1/219 dead transitions. [2022-07-12 10:38:34,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 219 transitions, 597 flow [2022-07-12 10:38:34,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:38:34,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:38:34,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 654 transitions. [2022-07-12 10:38:34,715 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9121338912133892 [2022-07-12 10:38:34,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 654 transitions. [2022-07-12 10:38:34,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 654 transitions. [2022-07-12 10:38:34,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:38:34,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 654 transitions. [2022-07-12 10:38:34,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 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 10:38:34,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:38:34,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:38:34,718 INFO L186 Difference]: Start difference. First operand has 226 places, 213 transitions, 544 flow. Second operand 3 states and 654 transitions. [2022-07-12 10:38:34,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 219 transitions, 597 flow [2022-07-12 10:38:34,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 219 transitions, 578 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-07-12 10:38:34,723 INFO L242 Difference]: Finished difference. Result has 222 places, 213 transitions, 526 flow [2022-07-12 10:38:34,723 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=526, PETRI_PLACES=222, PETRI_TRANSITIONS=213} [2022-07-12 10:38:34,723 INFO L279 CegarLoopForPetriNet]: 217 programPoint places, 5 predicate places. [2022-07-12 10:38:34,724 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 213 transitions, 526 flow [2022-07-12 10:38:34,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 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 10:38:34,724 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:38:34,724 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] [2022-07-12 10:38:34,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:38:34,725 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:38:34,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:38:34,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1128020994, now seen corresponding path program 1 times [2022-07-12 10:38:34,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:38:34,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857499487] [2022-07-12 10:38:34,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:38:34,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:38:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:38:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:38:34,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:38:34,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857499487] [2022-07-12 10:38:34,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857499487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:38:34,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:38:34,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:38:34,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421483542] [2022-07-12 10:38:34,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:38:34,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:38:34,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:38:34,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:38:34,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:38:34,802 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 239 [2022-07-12 10:38:34,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 213 transitions, 526 flow. Second operand has 6 states, 6 states have (on average 192.83333333333334) internal successors, (1157), 6 states have internal predecessors, (1157), 0 states have call successors, (0), 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 10:38:34,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:38:34,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 239 [2022-07-12 10:38:34,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:38:35,012 INFO L129 PetriNetUnfolder]: 393/1344 cut-off events. [2022-07-12 10:38:35,012 INFO L130 PetriNetUnfolder]: For 503/506 co-relation queries the response was YES. [2022-07-12 10:38:35,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2563 conditions, 1344 events. 393/1344 cut-off events. For 503/506 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8165 event pairs, 165 based on Foata normal form. 13/1255 useless extension candidates. Maximal degree in co-relation 2550. Up to 445 conditions per place. [2022-07-12 10:38:35,024 INFO L132 encePairwiseOnDemand]: 231/239 looper letters, 37 selfloop transitions, 6 changer transitions 9/226 dead transitions. [2022-07-12 10:38:35,024 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 226 transitions, 662 flow [2022-07-12 10:38:35,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:38:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:38:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1368 transitions. [2022-07-12 10:38:35,027 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8176927674835625 [2022-07-12 10:38:35,027 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1368 transitions. [2022-07-12 10:38:35,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1368 transitions. [2022-07-12 10:38:35,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:38:35,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1368 transitions. [2022-07-12 10:38:35,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 195.42857142857142) internal successors, (1368), 7 states have internal predecessors, (1368), 0 states have call successors, (0), 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 10:38:35,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 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 10:38:35,032 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 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 10:38:35,032 INFO L186 Difference]: Start difference. First operand has 222 places, 213 transitions, 526 flow. Second operand 7 states and 1368 transitions. [2022-07-12 10:38:35,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 226 transitions, 662 flow [2022-07-12 10:38:35,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 226 transitions, 660 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:38:35,037 INFO L242 Difference]: Finished difference. Result has 229 places, 214 transitions, 546 flow [2022-07-12 10:38:35,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=546, PETRI_PLACES=229, PETRI_TRANSITIONS=214} [2022-07-12 10:38:35,038 INFO L279 CegarLoopForPetriNet]: 217 programPoint places, 12 predicate places. [2022-07-12 10:38:35,038 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 214 transitions, 546 flow [2022-07-12 10:38:35,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.83333333333334) internal successors, (1157), 6 states have internal predecessors, (1157), 0 states have call successors, (0), 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 10:38:35,038 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:38:35,039 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, 1, 1] [2022-07-12 10:38:35,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:38:35,039 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:38:35,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:38:35,040 INFO L85 PathProgramCache]: Analyzing trace with hash -52368851, now seen corresponding path program 1 times [2022-07-12 10:38:35,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:38:35,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928283197] [2022-07-12 10:38:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:38:35,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:38:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:38:35,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:38:35,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:38:35,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928283197] [2022-07-12 10:38:35,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928283197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:38:35,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:38:35,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:38:35,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400787656] [2022-07-12 10:38:35,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:38:35,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:38:35,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:38:35,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:38:35,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:38:35,135 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 239 [2022-07-12 10:38:35,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 214 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 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 10:38:35,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:38:35,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 239 [2022-07-12 10:38:35,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:38:35,227 INFO L129 PetriNetUnfolder]: 207/836 cut-off events. [2022-07-12 10:38:35,227 INFO L130 PetriNetUnfolder]: For 349/351 co-relation queries the response was YES. [2022-07-12 10:38:35,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1600 conditions, 836 events. 207/836 cut-off events. For 349/351 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4256 event pairs, 77 based on Foata normal form. 6/807 useless extension candidates. Maximal degree in co-relation 1585. Up to 266 conditions per place. [2022-07-12 10:38:35,232 INFO L132 encePairwiseOnDemand]: 236/239 looper letters, 19 selfloop transitions, 2 changer transitions 2/220 dead transitions. [2022-07-12 10:38:35,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 220 transitions, 609 flow [2022-07-12 10:38:35,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:38:35,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:38:35,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2022-07-12 10:38:35,234 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9107391910739191 [2022-07-12 10:38:35,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2022-07-12 10:38:35,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2022-07-12 10:38:35,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:38:35,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2022-07-12 10:38:35,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:38:35,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:38:35,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:38:35,237 INFO L186 Difference]: Start difference. First operand has 229 places, 214 transitions, 546 flow. Second operand 3 states and 653 transitions. [2022-07-12 10:38:35,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 220 transitions, 609 flow [2022-07-12 10:38:35,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 220 transitions, 597 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-07-12 10:38:35,241 INFO L242 Difference]: Finished difference. Result has 226 places, 215 transitions, 546 flow [2022-07-12 10:38:35,241 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=226, PETRI_TRANSITIONS=215} [2022-07-12 10:38:35,242 INFO L279 CegarLoopForPetriNet]: 217 programPoint places, 9 predicate places. [2022-07-12 10:38:35,242 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 215 transitions, 546 flow [2022-07-12 10:38:35,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 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 10:38:35,242 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:38:35,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:38:35,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:38:35,243 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:38:35,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:38:35,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1861901491, now seen corresponding path program 1 times [2022-07-12 10:38:35,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:38:35,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696444671] [2022-07-12 10:38:35,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:38:35,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:38:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:38:35,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 10:38:35,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:38:35,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696444671] [2022-07-12 10:38:35,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696444671] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:38:35,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:38:35,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:38:35,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859363311] [2022-07-12 10:38:35,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:38:35,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:38:35,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:38:35,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:38:35,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:38:35,319 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 239 [2022-07-12 10:38:35,319 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 215 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 193.66666666666666) internal successors, (1162), 6 states have internal predecessors, (1162), 0 states have call successors, (0), 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 10:38:35,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:38:35,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 239 [2022-07-12 10:38:35,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:38:35,495 INFO L129 PetriNetUnfolder]: 216/949 cut-off events. [2022-07-12 10:38:35,495 INFO L130 PetriNetUnfolder]: For 430/445 co-relation queries the response was YES. [2022-07-12 10:38:35,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1872 conditions, 949 events. 216/949 cut-off events. For 430/445 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4654 event pairs, 80 based on Foata normal form. 4/898 useless extension candidates. Maximal degree in co-relation 1857. Up to 286 conditions per place. [2022-07-12 10:38:35,502 INFO L132 encePairwiseOnDemand]: 229/239 looper letters, 37 selfloop transitions, 8 changer transitions 20/239 dead transitions. [2022-07-12 10:38:35,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 239 transitions, 738 flow [2022-07-12 10:38:35,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:38:35,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:38:35,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1754 transitions. [2022-07-12 10:38:35,505 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8154346815434682 [2022-07-12 10:38:35,505 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1754 transitions. [2022-07-12 10:38:35,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1754 transitions. [2022-07-12 10:38:35,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:38:35,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1754 transitions. [2022-07-12 10:38:35,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 194.88888888888889) internal successors, (1754), 9 states have internal predecessors, (1754), 0 states have call successors, (0), 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 10:38:35,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 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 10:38:35,512 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 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 10:38:35,512 INFO L186 Difference]: Start difference. First operand has 226 places, 215 transitions, 546 flow. Second operand 9 states and 1754 transitions. [2022-07-12 10:38:35,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 239 transitions, 738 flow [2022-07-12 10:38:35,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 239 transitions, 736 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:38:35,518 INFO L242 Difference]: Finished difference. Result has 235 places, 216 transitions, 572 flow [2022-07-12 10:38:35,518 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=572, PETRI_PLACES=235, PETRI_TRANSITIONS=216} [2022-07-12 10:38:35,519 INFO L279 CegarLoopForPetriNet]: 217 programPoint places, 18 predicate places. [2022-07-12 10:38:35,519 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 216 transitions, 572 flow [2022-07-12 10:38:35,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.66666666666666) internal successors, (1162), 6 states have internal predecessors, (1162), 0 states have call successors, (0), 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 10:38:35,520 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:38:35,520 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:38:35,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:38:35,521 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:38:35,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:38:35,521 INFO L85 PathProgramCache]: Analyzing trace with hash -974836657, now seen corresponding path program 1 times [2022-07-12 10:38:35,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:38:35,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754139639] [2022-07-12 10:38:35,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:38:35,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:38:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:38:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:38:37,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:38:37,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754139639] [2022-07-12 10:38:37,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754139639] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:38:37,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257681002] [2022-07-12 10:38:37,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:38:37,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:38:37,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:38:37,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:38:37,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:38:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:38:37,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 99 conjunts are in the unsatisfiable core [2022-07-12 10:38:37,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:38:37,594 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:38:37,630 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:38:37,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-07-12 10:38:37,675 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:38:37,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-12 10:38:37,738 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:38:37,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-07-12 10:38:38,978 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 10:38:38,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 31 [2022-07-12 10:38:39,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-12 10:38:40,837 INFO L356 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2022-07-12 10:38:40,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2022-07-12 10:38:41,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:38:41,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:38:42,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:38:42,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:38:42,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:38:43,062 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:38:43,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2022-07-12 10:38:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:38:43,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:38:51,190 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:38:51,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2022-07-12 10:38:51,569 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:38:51,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 118347762 treesize of output 116246558 [2022-07-12 10:41:59,858 WARN L233 SmtUtils]: Spent 3.14m on a formula simplification that was a NOOP. DAG size: 9246 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 10:42:00,393 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:42:00,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 116246450 treesize of output 103638674