./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-name-comparator-trans.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 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:26:17,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:26:17,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:26:17,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:26:17,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:26:17,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:26:17,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:26:17,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:26:17,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:26:17,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:26:17,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:26:17,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:26:17,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:26:17,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:26:17,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:26:17,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:26:17,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:26:17,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:26:17,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:26:17,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:26:17,399 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:26:17,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:26:17,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:26:17,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:26:17,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:26:17,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:26:17,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:26:17,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:26:17,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:26:17,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:26:17,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:26:17,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:26:17,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:26:17,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:26:17,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:26:17,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:26:17,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:26:17,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:26:17,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:26:17,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:26:17,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:26:17,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:26:17,414 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:26:17,434 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:26:17,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:26:17,435 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:26:17,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:26:17,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:26:17,436 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:26:17,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:26:17,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:26:17,437 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:26:17,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:26:17,438 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:26:17,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:26:17,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:26:17,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:26:17,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:26:17,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:26:17,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:26:17,440 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:26:17,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:26:17,440 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:26:17,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:26:17,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:26:17,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:26:17,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:26:17,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:26:17,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:26:17,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:26:17,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:26:17,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:26:17,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:26:17,442 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:26:17,443 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:26:17,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:26:17,443 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d [2022-07-19 21:26:17,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:26:17,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:26:17,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:26:17,698 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:26:17,699 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:26:17,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-07-19 21:26:17,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4262f957/72e4000b8d0545828ae1e63800bbe752/FLAG71a189e75 [2022-07-19 21:26:18,190 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:26:18,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-07-19 21:26:18,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4262f957/72e4000b8d0545828ae1e63800bbe752/FLAG71a189e75 [2022-07-19 21:26:18,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4262f957/72e4000b8d0545828ae1e63800bbe752 [2022-07-19 21:26:18,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:26:18,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:26:18,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:26:18,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:26:18,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:26:18,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:26:18" (1/1) ... [2022-07-19 21:26:18,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@530b9603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:18, skipping insertion in model container [2022-07-19 21:26:18,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:26:18" (1/1) ... [2022-07-19 21:26:18,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:26:18,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:26:18,451 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/chl-name-comparator-trans.wvr.c[4788,4801] [2022-07-19 21:26:18,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:26:18,475 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:26:18,514 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/chl-name-comparator-trans.wvr.c[4788,4801] [2022-07-19 21:26:18,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:26:18,543 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:26:18,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:18 WrapperNode [2022-07-19 21:26:18,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:26:18,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:26:18,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:26:18,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:26:18,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:18" (1/1) ... [2022-07-19 21:26:18,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:18" (1/1) ... [2022-07-19 21:26:18,603 INFO L137 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 369 [2022-07-19 21:26:18,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:26:18,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:26:18,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:26:18,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:26:18,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:18" (1/1) ... [2022-07-19 21:26:18,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:18" (1/1) ... [2022-07-19 21:26:18,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:18" (1/1) ... [2022-07-19 21:26:18,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:18" (1/1) ... [2022-07-19 21:26:18,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:18" (1/1) ... [2022-07-19 21:26:18,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:18" (1/1) ... [2022-07-19 21:26:18,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:18" (1/1) ... [2022-07-19 21:26:18,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:26:18,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:26:18,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:26:18,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:26:18,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:18" (1/1) ... [2022-07-19 21:26:18,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:26:18,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:26:18,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:26:18,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:26:18,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:26:18,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:26:18,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:26:18,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:26:18,732 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:26:18,732 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:26:18,732 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:26:18,732 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:26:18,733 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:26:18,733 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:26:18,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:26:18,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:26:18,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:26:18,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:26:18,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:26:18,735 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:26:18,840 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:26:18,841 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:26:19,254 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:26:19,267 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:26:19,267 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 21:26:19,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:26:19 BoogieIcfgContainer [2022-07-19 21:26:19,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:26:19,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:26:19,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:26:19,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:26:19,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:26:18" (1/3) ... [2022-07-19 21:26:19,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51788574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:26:19, skipping insertion in model container [2022-07-19 21:26:19,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:18" (2/3) ... [2022-07-19 21:26:19,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51788574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:26:19, skipping insertion in model container [2022-07-19 21:26:19,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:26:19" (3/3) ... [2022-07-19 21:26:19,280 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2022-07-19 21:26:19,284 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:26:19,290 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:26:19,290 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:26:19,290 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:26:19,381 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-19 21:26:19,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 431 places, 465 transitions, 954 flow [2022-07-19 21:26:19,576 INFO L129 PetriNetUnfolder]: 44/462 cut-off events. [2022-07-19 21:26:19,576 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:26:19,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 462 events. 44/462 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1299 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 334. Up to 2 conditions per place. [2022-07-19 21:26:19,594 INFO L82 GeneralOperation]: Start removeDead. Operand has 431 places, 465 transitions, 954 flow [2022-07-19 21:26:19,608 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 417 places, 451 transitions, 920 flow [2022-07-19 21:26:19,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:26:19,636 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@164a357b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5d8dd84e [2022-07-19 21:26:19,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:26:19,733 INFO L129 PetriNetUnfolder]: 44/450 cut-off events. [2022-07-19 21:26:19,734 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:26:19,734 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:19,735 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:19,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:19,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:19,742 INFO L85 PathProgramCache]: Analyzing trace with hash -34176344, now seen corresponding path program 1 times [2022-07-19 21:26:19,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:19,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25410740] [2022-07-19 21:26:19,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:19,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:20,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:20,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:20,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25410740] [2022-07-19 21:26:20,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25410740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:20,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:20,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:26:20,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778927572] [2022-07-19 21:26:20,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:20,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 21:26:20,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:20,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 21:26:20,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 21:26:20,091 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 439 out of 465 [2022-07-19 21:26:20,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 451 transitions, 920 flow. Second operand has 2 states, 2 states have (on average 444.0) internal successors, (888), 2 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:20,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 439 of 465 [2022-07-19 21:26:20,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:20,229 INFO L129 PetriNetUnfolder]: 25/432 cut-off events. [2022-07-19 21:26:20,229 INFO L130 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2022-07-19 21:26:20,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 432 events. 25/432 cut-off events. For 12/14 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1278 event pairs, 0 based on Foata normal form. 32/424 useless extension candidates. Maximal degree in co-relation 323. Up to 7 conditions per place. [2022-07-19 21:26:20,239 INFO L132 encePairwiseOnDemand]: 446/465 looper letters, 6 selfloop transitions, 0 changer transitions 3/432 dead transitions. [2022-07-19 21:26:20,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 432 transitions, 894 flow [2022-07-19 21:26:20,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 21:26:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-19 21:26:20,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 903 transitions. [2022-07-19 21:26:20,268 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9709677419354839 [2022-07-19 21:26:20,270 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 903 transitions. [2022-07-19 21:26:20,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 903 transitions. [2022-07-19 21:26:20,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:20,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 903 transitions. [2022-07-19 21:26:20,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 451.5) internal successors, (903), 2 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 465.0) internal successors, (1395), 3 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,296 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 465.0) internal successors, (1395), 3 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,297 INFO L186 Difference]: Start difference. First operand has 417 places, 451 transitions, 920 flow. Second operand 2 states and 903 transitions. [2022-07-19 21:26:20,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 432 transitions, 894 flow [2022-07-19 21:26:20,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 432 transitions, 882 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-19 21:26:20,316 INFO L242 Difference]: Finished difference. Result has 412 places, 429 transitions, 864 flow [2022-07-19 21:26:20,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=864, PETRI_PLACES=412, PETRI_TRANSITIONS=429} [2022-07-19 21:26:20,324 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, -5 predicate places. [2022-07-19 21:26:20,324 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 429 transitions, 864 flow [2022-07-19 21:26:20,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 444.0) internal successors, (888), 2 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,325 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:20,326 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:20,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:26:20,326 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:20,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:20,327 INFO L85 PathProgramCache]: Analyzing trace with hash 430466396, now seen corresponding path program 1 times [2022-07-19 21:26:20,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:20,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960765681] [2022-07-19 21:26:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:20,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:20,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:20,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960765681] [2022-07-19 21:26:20,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960765681] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:20,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:20,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:26:20,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451322604] [2022-07-19 21:26:20,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:20,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:26:20,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:20,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:26:20,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:26:20,553 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 465 [2022-07-19 21:26:20,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 429 transitions, 864 flow. Second operand has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:20,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 465 [2022-07-19 21:26:20,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:20,831 INFO L129 PetriNetUnfolder]: 96/816 cut-off events. [2022-07-19 21:26:20,831 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-19 21:26:20,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 816 events. 96/816 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4463 event pairs, 22 based on Foata normal form. 0/737 useless extension candidates. Maximal degree in co-relation 1006. Up to 69 conditions per place. [2022-07-19 21:26:20,850 INFO L132 encePairwiseOnDemand]: 453/465 looper letters, 32 selfloop transitions, 11 changer transitions 0/447 dead transitions. [2022-07-19 21:26:20,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 447 transitions, 993 flow [2022-07-19 21:26:20,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:26:20,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:26:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1724 transitions. [2022-07-19 21:26:20,856 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9268817204301075 [2022-07-19 21:26:20,856 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1724 transitions. [2022-07-19 21:26:20,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1724 transitions. [2022-07-19 21:26:20,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:20,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1724 transitions. [2022-07-19 21:26:20,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,866 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,866 INFO L186 Difference]: Start difference. First operand has 412 places, 429 transitions, 864 flow. Second operand 4 states and 1724 transitions. [2022-07-19 21:26:20,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 447 transitions, 993 flow [2022-07-19 21:26:20,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 447 transitions, 993 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:20,875 INFO L242 Difference]: Finished difference. Result has 415 places, 435 transitions, 934 flow [2022-07-19 21:26:20,876 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=934, PETRI_PLACES=415, PETRI_TRANSITIONS=435} [2022-07-19 21:26:20,877 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, -2 predicate places. [2022-07-19 21:26:20,877 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 435 transitions, 934 flow [2022-07-19 21:26:20,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,880 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:20,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:20,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:26:20,880 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:20,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:20,882 INFO L85 PathProgramCache]: Analyzing trace with hash 755583458, now seen corresponding path program 1 times [2022-07-19 21:26:20,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:20,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111869629] [2022-07-19 21:26:20,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:20,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:20,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:20,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111869629] [2022-07-19 21:26:20,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111869629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:20,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:20,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:26:20,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904081430] [2022-07-19 21:26:20,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:20,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:26:20,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:20,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:26:20,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:26:20,983 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 465 [2022-07-19 21:26:20,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 435 transitions, 934 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:20,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 465 [2022-07-19 21:26:20,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:27,460 INFO L129 PetriNetUnfolder]: 9837/43741 cut-off events. [2022-07-19 21:26:27,461 INFO L130 PetriNetUnfolder]: For 2068/2150 co-relation queries the response was YES. [2022-07-19 21:26:27,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55854 conditions, 43741 events. 9837/43741 cut-off events. For 2068/2150 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 629327 event pairs, 6336 based on Foata normal form. 0/36321 useless extension candidates. Maximal degree in co-relation 55848. Up to 5798 conditions per place. [2022-07-19 21:26:27,926 INFO L132 encePairwiseOnDemand]: 462/465 looper letters, 74 selfloop transitions, 2 changer transitions 0/469 dead transitions. [2022-07-19 21:26:27,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 469 transitions, 1169 flow [2022-07-19 21:26:27,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:26:27,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:26:27,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1287 transitions. [2022-07-19 21:26:27,930 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9225806451612903 [2022-07-19 21:26:27,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1287 transitions. [2022-07-19 21:26:27,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1287 transitions. [2022-07-19 21:26:27,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:27,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1287 transitions. [2022-07-19 21:26:27,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:27,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:27,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:27,938 INFO L186 Difference]: Start difference. First operand has 415 places, 435 transitions, 934 flow. Second operand 3 states and 1287 transitions. [2022-07-19 21:26:27,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 469 transitions, 1169 flow [2022-07-19 21:26:27,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 469 transitions, 1169 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:27,954 INFO L242 Difference]: Finished difference. Result has 419 places, 436 transitions, 948 flow [2022-07-19 21:26:27,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=948, PETRI_PLACES=419, PETRI_TRANSITIONS=436} [2022-07-19 21:26:27,957 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 2 predicate places. [2022-07-19 21:26:27,958 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 436 transitions, 948 flow [2022-07-19 21:26:27,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:27,959 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:27,959 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:27,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:26:27,959 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:27,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:27,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1209857346, now seen corresponding path program 1 times [2022-07-19 21:26:27,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:27,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117021150] [2022-07-19 21:26:27,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:27,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:28,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:28,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:28,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117021150] [2022-07-19 21:26:28,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117021150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:28,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:28,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:26:28,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514087957] [2022-07-19 21:26:28,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:28,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:26:28,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:28,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:26:28,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:26:28,068 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 465 [2022-07-19 21:26:28,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 436 transitions, 948 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:28,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:28,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 465 [2022-07-19 21:26:28,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:36,003 INFO L129 PetriNetUnfolder]: 14394/62075 cut-off events. [2022-07-19 21:26:36,003 INFO L130 PetriNetUnfolder]: For 3204/3204 co-relation queries the response was YES. [2022-07-19 21:26:36,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80677 conditions, 62075 events. 14394/62075 cut-off events. For 3204/3204 co-relation queries the response was YES. Maximal size of possible extension queue 1881. Compared 939058 event pairs, 5748 based on Foata normal form. 0/51408 useless extension candidates. Maximal degree in co-relation 80669. Up to 8465 conditions per place. [2022-07-19 21:26:36,752 INFO L132 encePairwiseOnDemand]: 462/465 looper letters, 72 selfloop transitions, 2 changer transitions 0/468 dead transitions. [2022-07-19 21:26:36,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 468 transitions, 1175 flow [2022-07-19 21:26:36,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:26:36,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:26:36,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1285 transitions. [2022-07-19 21:26:36,757 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.921146953405018 [2022-07-19 21:26:36,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1285 transitions. [2022-07-19 21:26:36,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1285 transitions. [2022-07-19 21:26:36,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:36,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1285 transitions. [2022-07-19 21:26:36,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 428.3333333333333) internal successors, (1285), 3 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,769 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,770 INFO L186 Difference]: Start difference. First operand has 419 places, 436 transitions, 948 flow. Second operand 3 states and 1285 transitions. [2022-07-19 21:26:36,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 468 transitions, 1175 flow [2022-07-19 21:26:36,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 468 transitions, 1171 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:26:36,790 INFO L242 Difference]: Finished difference. Result has 422 places, 437 transitions, 960 flow [2022-07-19 21:26:36,791 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=960, PETRI_PLACES=422, PETRI_TRANSITIONS=437} [2022-07-19 21:26:36,793 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 5 predicate places. [2022-07-19 21:26:36,798 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 437 transitions, 960 flow [2022-07-19 21:26:36,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,799 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:36,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:36,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:26:36,800 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:36,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:36,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1536483866, now seen corresponding path program 1 times [2022-07-19 21:26:36,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:36,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332859138] [2022-07-19 21:26:36,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:36,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:36,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:36,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:36,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332859138] [2022-07-19 21:26:36,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332859138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:36,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:36,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:26:36,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664784561] [2022-07-19 21:26:36,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:36,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:26:36,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:36,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:26:36,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:26:36,897 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 465 [2022-07-19 21:26:36,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 437 transitions, 960 flow. Second operand has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:36,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 465 [2022-07-19 21:26:36,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:37,671 INFO L129 PetriNetUnfolder]: 433/3008 cut-off events. [2022-07-19 21:26:37,671 INFO L130 PetriNetUnfolder]: For 320/328 co-relation queries the response was YES. [2022-07-19 21:26:37,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3810 conditions, 3008 events. 433/3008 cut-off events. For 320/328 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 27914 event pairs, 144 based on Foata normal form. 0/2634 useless extension candidates. Maximal degree in co-relation 3801. Up to 372 conditions per place. [2022-07-19 21:26:37,704 INFO L132 encePairwiseOnDemand]: 453/465 looper letters, 30 selfloop transitions, 11 changer transitions 0/453 dead transitions. [2022-07-19 21:26:37,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 453 transitions, 1079 flow [2022-07-19 21:26:37,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:26:37,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:26:37,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1722 transitions. [2022-07-19 21:26:37,708 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9258064516129032 [2022-07-19 21:26:37,708 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1722 transitions. [2022-07-19 21:26:37,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1722 transitions. [2022-07-19 21:26:37,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:37,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1722 transitions. [2022-07-19 21:26:37,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 430.5) internal successors, (1722), 4 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:37,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:37,726 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:37,726 INFO L186 Difference]: Start difference. First operand has 422 places, 437 transitions, 960 flow. Second operand 4 states and 1722 transitions. [2022-07-19 21:26:37,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 453 transitions, 1079 flow [2022-07-19 21:26:37,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 453 transitions, 1077 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:26:37,738 INFO L242 Difference]: Finished difference. Result has 427 places, 443 transitions, 1028 flow [2022-07-19 21:26:37,739 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1028, PETRI_PLACES=427, PETRI_TRANSITIONS=443} [2022-07-19 21:26:37,742 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 10 predicate places. [2022-07-19 21:26:37,742 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 443 transitions, 1028 flow [2022-07-19 21:26:37,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:37,744 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:37,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:37,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:26:37,744 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:37,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:37,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1892962622, now seen corresponding path program 1 times [2022-07-19 21:26:37,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:37,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979457819] [2022-07-19 21:26:37,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:37,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:37,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:37,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:37,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979457819] [2022-07-19 21:26:37,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979457819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:37,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:37,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:26:37,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2902026] [2022-07-19 21:26:37,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:37,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:26:37,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:37,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:26:37,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:26:37,834 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 465 [2022-07-19 21:26:37,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 443 transitions, 1028 flow. Second operand has 5 states, 5 states have (on average 429.8) internal successors, (2149), 5 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:37,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:37,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 465 [2022-07-19 21:26:37,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:38,037 INFO L129 PetriNetUnfolder]: 41/870 cut-off events. [2022-07-19 21:26:38,037 INFO L130 PetriNetUnfolder]: For 52/60 co-relation queries the response was YES. [2022-07-19 21:26:38,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 870 events. 41/870 cut-off events. For 52/60 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4162 event pairs, 0 based on Foata normal form. 0/805 useless extension candidates. Maximal degree in co-relation 1010. Up to 37 conditions per place. [2022-07-19 21:26:38,065 INFO L132 encePairwiseOnDemand]: 460/465 looper letters, 18 selfloop transitions, 4 changer transitions 0/447 dead transitions. [2022-07-19 21:26:38,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 447 transitions, 1080 flow [2022-07-19 21:26:38,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:26:38,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:26:38,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2158 transitions. [2022-07-19 21:26:38,070 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9281720430107527 [2022-07-19 21:26:38,071 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2158 transitions. [2022-07-19 21:26:38,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2158 transitions. [2022-07-19 21:26:38,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:38,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2158 transitions. [2022-07-19 21:26:38,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 431.6) internal successors, (2158), 5 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:38,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:38,083 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:38,083 INFO L186 Difference]: Start difference. First operand has 427 places, 443 transitions, 1028 flow. Second operand 5 states and 2158 transitions. [2022-07-19 21:26:38,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 447 transitions, 1080 flow [2022-07-19 21:26:38,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 447 transitions, 1080 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:38,093 INFO L242 Difference]: Finished difference. Result has 432 places, 444 transitions, 1044 flow [2022-07-19 21:26:38,094 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1044, PETRI_PLACES=432, PETRI_TRANSITIONS=444} [2022-07-19 21:26:38,096 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 15 predicate places. [2022-07-19 21:26:38,096 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 444 transitions, 1044 flow [2022-07-19 21:26:38,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 429.8) internal successors, (2149), 5 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:38,098 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:38,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:38,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:26:38,098 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:38,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1257930888, now seen corresponding path program 1 times [2022-07-19 21:26:38,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:38,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605929099] [2022-07-19 21:26:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:38,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:38,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:38,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:38,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605929099] [2022-07-19 21:26:38,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605929099] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:26:38,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201730965] [2022-07-19 21:26:38,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:38,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:26:38,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:26:38,213 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) [2022-07-19 21:26:38,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:26:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:38,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 21:26:38,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:26:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:38,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:26:38,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:38,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201730965] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:26:38,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:26:38,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-07-19 21:26:38,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317883186] [2022-07-19 21:26:38,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:26:38,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:38,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:38,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:38,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:38,590 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 465 [2022-07-19 21:26:38,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 444 transitions, 1044 flow. Second operand has 14 states, 14 states have (on average 428.7857142857143) internal successors, (6003), 14 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:38,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:38,596 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 465 [2022-07-19 21:26:38,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:38,912 INFO L129 PetriNetUnfolder]: 41/879 cut-off events. [2022-07-19 21:26:38,912 INFO L130 PetriNetUnfolder]: For 56/64 co-relation queries the response was YES. [2022-07-19 21:26:38,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 879 events. 41/879 cut-off events. For 56/64 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4153 event pairs, 0 based on Foata normal form. 2/817 useless extension candidates. Maximal degree in co-relation 1035. Up to 34 conditions per place. [2022-07-19 21:26:38,938 INFO L132 encePairwiseOnDemand]: 457/465 looper letters, 19 selfloop transitions, 11 changer transitions 0/454 dead transitions. [2022-07-19 21:26:38,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 454 transitions, 1126 flow [2022-07-19 21:26:38,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:26:38,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:26:38,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4718 transitions. [2022-07-19 21:26:38,948 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9223851417399804 [2022-07-19 21:26:38,948 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4718 transitions. [2022-07-19 21:26:38,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4718 transitions. [2022-07-19 21:26:38,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:38,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4718 transitions. [2022-07-19 21:26:38,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 428.90909090909093) internal successors, (4718), 11 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:38,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 465.0) internal successors, (5580), 12 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:38,971 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 465.0) internal successors, (5580), 12 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:38,971 INFO L186 Difference]: Start difference. First operand has 432 places, 444 transitions, 1044 flow. Second operand 11 states and 4718 transitions. [2022-07-19 21:26:38,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 454 transitions, 1126 flow [2022-07-19 21:26:38,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 454 transitions, 1120 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-19 21:26:38,980 INFO L242 Difference]: Finished difference. Result has 442 places, 450 transitions, 1093 flow [2022-07-19 21:26:38,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1093, PETRI_PLACES=442, PETRI_TRANSITIONS=450} [2022-07-19 21:26:38,982 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 25 predicate places. [2022-07-19 21:26:38,982 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 450 transitions, 1093 flow [2022-07-19 21:26:38,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 428.7857142857143) internal successors, (6003), 14 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:38,984 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:38,984 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:39,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 21:26:39,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:26:39,200 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:26:39,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:39,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1395066516, now seen corresponding path program 2 times [2022-07-19 21:26:39,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:39,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228675996] [2022-07-19 21:26:39,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:39,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:39,378 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 21:26:39,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:39,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228675996] [2022-07-19 21:26:39,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228675996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:39,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:39,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:26:39,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197618855] [2022-07-19 21:26:39,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:39,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:26:39,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:39,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:26:39,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:26:39,382 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 465 [2022-07-19 21:26:39,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 450 transitions, 1093 flow. Second operand has 8 states, 8 states have (on average 394.5) internal successors, (3156), 8 states have internal predecessors, (3156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:39,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:39,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 465 [2022-07-19 21:26:39,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:01,474 INFO L129 PetriNetUnfolder]: 32905/141679 cut-off events. [2022-07-19 21:27:01,474 INFO L130 PetriNetUnfolder]: For 6351/6351 co-relation queries the response was YES. [2022-07-19 21:27:03,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194082 conditions, 141679 events. 32905/141679 cut-off events. For 6351/6351 co-relation queries the response was YES. Maximal size of possible extension queue 3558. Compared 2342164 event pairs, 12709 based on Foata normal form. 16/127283 useless extension candidates. Maximal degree in co-relation 194066. Up to 24204 conditions per place. [2022-07-19 21:27:03,811 INFO L132 encePairwiseOnDemand]: 452/465 looper letters, 124 selfloop transitions, 10 changer transitions 4/536 dead transitions. [2022-07-19 21:27:03,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 536 transitions, 1551 flow [2022-07-19 21:27:03,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:27:03,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:27:03,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3649 transitions. [2022-07-19 21:27:03,819 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8719235364396655 [2022-07-19 21:27:03,820 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3649 transitions. [2022-07-19 21:27:03,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3649 transitions. [2022-07-19 21:27:03,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:03,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3649 transitions. [2022-07-19 21:27:03,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 405.44444444444446) internal successors, (3649), 9 states have internal predecessors, (3649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:03,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 465.0) internal successors, (4650), 10 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:03,836 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 465.0) internal successors, (4650), 10 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:03,837 INFO L186 Difference]: Start difference. First operand has 442 places, 450 transitions, 1093 flow. Second operand 9 states and 3649 transitions. [2022-07-19 21:27:03,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 536 transitions, 1551 flow [2022-07-19 21:27:03,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 536 transitions, 1542 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-19 21:27:03,901 INFO L242 Difference]: Finished difference. Result has 453 places, 456 transitions, 1147 flow [2022-07-19 21:27:03,902 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1147, PETRI_PLACES=453, PETRI_TRANSITIONS=456} [2022-07-19 21:27:03,902 INFO L279 CegarLoopForPetriNet]: 417 programPoint places, 36 predicate places. [2022-07-19 21:27:03,903 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 456 transitions, 1147 flow [2022-07-19 21:27:03,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 394.5) internal successors, (3156), 8 states have internal predecessors, (3156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:03,904 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:03,904 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:03,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:27:03,905 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:03,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:03,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1725997040, now seen corresponding path program 1 times [2022-07-19 21:27:03,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:03,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059520532] [2022-07-19 21:27:03,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:03,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 21:27:03,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:03,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059520532] [2022-07-19 21:27:03,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059520532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:03,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:03,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:27:03,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856278194] [2022-07-19 21:27:03,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:03,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:27:03,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:03,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:27:03,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:27:03,959 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 465 [2022-07-19 21:27:03,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 456 transitions, 1147 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:03,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:03,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 465 [2022-07-19 21:27:03,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand