./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/weaver/test-easy10.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 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 04:04:04,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 04:04:04,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 04:04:04,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 04:04:04,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 04:04:04,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 04:04:04,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 04:04:04,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 04:04:04,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 04:04:04,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 04:04:04,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 04:04:04,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 04:04:04,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 04:04:04,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 04:04:04,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 04:04:04,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 04:04:04,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 04:04:04,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 04:04:04,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 04:04:04,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 04:04:04,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 04:04:04,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 04:04:04,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 04:04:04,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 04:04:04,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 04:04:04,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 04:04:04,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 04:04:04,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 04:04:04,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 04:04:04,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 04:04:04,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 04:04:04,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 04:04:04,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 04:04:04,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 04:04:04,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 04:04:04,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 04:04:04,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 04:04:04,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 04:04:04,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 04:04:04,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 04:04:04,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 04:04:04,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 04:04:04,312 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 04:04:04,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 04:04:04,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 04:04:04,314 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 04:04:04,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 04:04:04,314 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 04:04:04,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 04:04:04,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 04:04:04,315 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 04:04:04,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 04:04:04,316 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 04:04:04,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 04:04:04,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 04:04:04,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 04:04:04,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 04:04:04,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 04:04:04,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 04:04:04,317 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 04:04:04,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 04:04:04,317 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 04:04:04,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 04:04:04,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 04:04:04,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 04:04:04,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 04:04:04,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 04:04:04,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 04:04:04,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 04:04:04,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 04:04:04,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 04:04:04,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 04:04:04,319 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 04:04:04,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 04:04:04,319 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 04:04:04,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 04:04:04,320 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 04:04:04,320 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 04:04:04,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 04:04:04,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 04:04:04,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 04:04:04,608 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 04:04:04,608 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 04:04:04,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-08-31 04:04:05,600 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 04:04:05,762 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 04:04:05,763 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-08-31 04:04:05,767 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b1e0d64d/5f7c430ab00b412da28fa3e491fe1eaa/FLAGd02842d9d [2023-08-31 04:04:05,776 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b1e0d64d/5f7c430ab00b412da28fa3e491fe1eaa [2023-08-31 04:04:05,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 04:04:05,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 04:04:05,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 04:04:05,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 04:04:05,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 04:04:05,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 04:04:05" (1/1) ... [2023-08-31 04:04:05,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d54406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:04:05, skipping insertion in model container [2023-08-31 04:04:05,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 04:04:05" (1/1) ... [2023-08-31 04:04:05,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 04:04:05,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 04:04:05,919 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c[3907,3920] [2023-08-31 04:04:05,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 04:04:05,928 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 04:04:05,944 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c[3907,3920] [2023-08-31 04:04:05,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 04:04:05,952 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 04:04:05,952 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 04:04:05,956 INFO L208 MainTranslator]: Completed translation [2023-08-31 04:04:05,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:04:05 WrapperNode [2023-08-31 04:04:05,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 04:04:05,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 04:04:05,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 04:04:05,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 04:04:05,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:04:05" (1/1) ... [2023-08-31 04:04:05,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:04:05" (1/1) ... [2023-08-31 04:04:05,987 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 192 [2023-08-31 04:04:05,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 04:04:05,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 04:04:05,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 04:04:05,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 04:04:06,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:04:05" (1/1) ... [2023-08-31 04:04:06,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:04:05" (1/1) ... [2023-08-31 04:04:06,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:04:05" (1/1) ... [2023-08-31 04:04:06,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:04:05" (1/1) ... [2023-08-31 04:04:06,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:04:05" (1/1) ... [2023-08-31 04:04:06,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:04:05" (1/1) ... [2023-08-31 04:04:06,011 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:04:05" (1/1) ... [2023-08-31 04:04:06,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:04:05" (1/1) ... [2023-08-31 04:04:06,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 04:04:06,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 04:04:06,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 04:04:06,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 04:04:06,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:04:05" (1/1) ... [2023-08-31 04:04:06,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 04:04:06,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:04:06,038 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) [2023-08-31 04:04:06,066 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 [2023-08-31 04:04:06,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 04:04:06,080 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 04:04:06,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 04:04:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 04:04:06,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 04:04:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 04:04:06,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 04:04:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-31 04:04:06,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-31 04:04:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 04:04:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 04:04:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 04:04:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 04:04:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 04:04:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 04:04:06,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 04:04:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 04:04:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 04:04:06,095 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 04:04:06,184 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 04:04:06,185 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 04:04:06,415 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 04:04:06,477 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 04:04:06,477 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 04:04:06,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 04:04:06 BoogieIcfgContainer [2023-08-31 04:04:06,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 04:04:06,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 04:04:06,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 04:04:06,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 04:04:06,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 04:04:05" (1/3) ... [2023-08-31 04:04:06,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f7b133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 04:04:06, skipping insertion in model container [2023-08-31 04:04:06,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:04:05" (2/3) ... [2023-08-31 04:04:06,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f7b133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 04:04:06, skipping insertion in model container [2023-08-31 04:04:06,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 04:04:06" (3/3) ... [2023-08-31 04:04:06,486 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2023-08-31 04:04:06,492 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 04:04:06,498 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 04:04:06,498 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 04:04:06,499 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 04:04:06,605 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 04:04:06,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 302 flow [2023-08-31 04:04:06,716 INFO L130 PetriNetUnfolder]: 2/131 cut-off events. [2023-08-31 04:04:06,717 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 04:04:06,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 131 events. 2/131 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-08-31 04:04:06,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 135 transitions, 302 flow [2023-08-31 04:04:06,722 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 119 transitions, 262 flow [2023-08-31 04:04:06,724 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 04:04:06,730 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 119 transitions, 262 flow [2023-08-31 04:04:06,731 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 119 transitions, 262 flow [2023-08-31 04:04:06,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 119 transitions, 262 flow [2023-08-31 04:04:06,751 INFO L130 PetriNetUnfolder]: 2/119 cut-off events. [2023-08-31 04:04:06,751 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 04:04:06,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 119 events. 2/119 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-08-31 04:04:06,753 INFO L119 LiptonReduction]: Number of co-enabled transitions 1824 [2023-08-31 04:04:09,850 INFO L134 LiptonReduction]: Checked pairs total: 11399 [2023-08-31 04:04:09,850 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-31 04:04:09,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 04:04:09,874 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b457374, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 04:04:09,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-31 04:04:09,882 INFO L130 PetriNetUnfolder]: 0/40 cut-off events. [2023-08-31 04:04:09,882 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 04:04:09,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:04:09,883 INFO L208 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] [2023-08-31 04:04:09,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 04:04:09,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:04:09,887 INFO L85 PathProgramCache]: Analyzing trace with hash 152339249, now seen corresponding path program 1 times [2023-08-31 04:04:09,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:04:09,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273889621] [2023-08-31 04:04:09,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:04:09,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:04:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:04:10,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:04:10,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:04:10,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273889621] [2023-08-31 04:04:10,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273889621] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:04:10,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:04:10,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 04:04:10,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472261948] [2023-08-31 04:04:10,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:04:10,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 04:04:10,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:04:10,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 04:04:10,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 04:04:10,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-08-31 04:04:10,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-31 04:04:10,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:04:10,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-08-31 04:04:10,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:04:10,619 INFO L130 PetriNetUnfolder]: 665/1141 cut-off events. [2023-08-31 04:04:10,619 INFO L131 PetriNetUnfolder]: For 124/124 co-relation queries the response was YES. [2023-08-31 04:04:10,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 1141 events. 665/1141 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6324 event pairs, 336 based on Foata normal form. 25/1139 useless extension candidates. Maximal degree in co-relation 2140. Up to 960 conditions per place. [2023-08-31 04:04:10,629 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-31 04:04:10,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 200 flow [2023-08-31 04:04:10,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 04:04:10,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 04:04:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-08-31 04:04:10,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2023-08-31 04:04:10,642 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-08-31 04:04:10,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-08-31 04:04:10,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:04:10,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-08-31 04:04:10,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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) [2023-08-31 04:04:10,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-08-31 04:04:10,651 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-08-31 04:04:10,652 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 106 flow. Second operand 3 states and 390 transitions. [2023-08-31 04:04:10,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 200 flow [2023-08-31 04:04:10,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 180 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-31 04:04:10,670 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 98 flow [2023-08-31 04:04:10,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-08-31 04:04:10,674 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-08-31 04:04:10,674 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 98 flow [2023-08-31 04:04:10,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-31 04:04:10,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:04:10,675 INFO L208 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] [2023-08-31 04:04:10,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 04:04:10,675 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 04:04:10,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:04:10,676 INFO L85 PathProgramCache]: Analyzing trace with hash -877069175, now seen corresponding path program 2 times [2023-08-31 04:04:10,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:04:10,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161880381] [2023-08-31 04:04:10,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:04:10,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:04:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:04:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:04:12,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:04:12,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161880381] [2023-08-31 04:04:12,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161880381] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:04:12,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:04:12,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-31 04:04:12,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643604169] [2023-08-31 04:04:12,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:04:12,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 04:04:12,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:04:12,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 04:04:12,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-31 04:04:12,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-31 04:04:12,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 98 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:04:12,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:04:12,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-31 04:04:12,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:04:15,394 INFO L130 PetriNetUnfolder]: 15827/23375 cut-off events. [2023-08-31 04:04:15,394 INFO L131 PetriNetUnfolder]: For 1313/1313 co-relation queries the response was YES. [2023-08-31 04:04:15,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47247 conditions, 23375 events. 15827/23375 cut-off events. For 1313/1313 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 150387 event pairs, 2555 based on Foata normal form. 1/23352 useless extension candidates. Maximal degree in co-relation 16328. Up to 7098 conditions per place. [2023-08-31 04:04:15,495 INFO L137 encePairwiseOnDemand]: 207/221 looper letters, 207 selfloop transitions, 15 changer transitions 16/242 dead transitions. [2023-08-31 04:04:15,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 242 transitions, 1028 flow [2023-08-31 04:04:15,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 04:04:15,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 04:04:15,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1527 transitions. [2023-08-31 04:04:15,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935358758888171 [2023-08-31 04:04:15,499 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1527 transitions. [2023-08-31 04:04:15,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1527 transitions. [2023-08-31 04:04:15,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:04:15,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1527 transitions. [2023-08-31 04:04:15,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.07142857142857) internal successors, (1527), 14 states have internal predecessors, (1527), 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) [2023-08-31 04:04:15,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-31 04:04:15,508 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-31 04:04:15,509 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 98 flow. Second operand 14 states and 1527 transitions. [2023-08-31 04:04:15,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 242 transitions, 1028 flow [2023-08-31 04:04:15,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 242 transitions, 1024 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 04:04:15,515 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 220 flow [2023-08-31 04:04:15,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=220, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2023-08-31 04:04:15,516 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2023-08-31 04:04:15,516 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 220 flow [2023-08-31 04:04:15,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:04:15,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:04:15,518 INFO L208 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] [2023-08-31 04:04:15,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 04:04:15,518 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 04:04:15,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:04:15,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1023457985, now seen corresponding path program 3 times [2023-08-31 04:04:15,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:04:15,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480516848] [2023-08-31 04:04:15,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:04:15,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:04:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:04:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:04:15,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:04:15,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480516848] [2023-08-31 04:04:15,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480516848] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:04:15,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:04:15,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 04:04:15,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290915411] [2023-08-31 04:04:15,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:04:15,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 04:04:15,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:04:15,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 04:04:15,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 04:04:15,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-08-31 04:04:15,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-31 04:04:15,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:04:15,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-08-31 04:04:15,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:04:16,021 INFO L130 PetriNetUnfolder]: 3016/5386 cut-off events. [2023-08-31 04:04:16,021 INFO L131 PetriNetUnfolder]: For 5571/5649 co-relation queries the response was YES. [2023-08-31 04:04:16,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14798 conditions, 5386 events. 3016/5386 cut-off events. For 5571/5649 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 40027 event pairs, 713 based on Foata normal form. 74/5111 useless extension candidates. Maximal degree in co-relation 14761. Up to 4110 conditions per place. [2023-08-31 04:04:16,057 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 43 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-31 04:04:16,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 347 flow [2023-08-31 04:04:16,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 04:04:16,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 04:04:16,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-08-31 04:04:16,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5912518853695324 [2023-08-31 04:04:16,059 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-08-31 04:04:16,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-08-31 04:04:16,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:04:16,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-08-31 04:04:16,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2023-08-31 04:04:16,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-08-31 04:04:16,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-08-31 04:04:16,062 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 220 flow. Second operand 3 states and 392 transitions. [2023-08-31 04:04:16,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 347 flow [2023-08-31 04:04:16,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 339 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-31 04:04:16,092 INFO L231 Difference]: Finished difference. Result has 70 places, 54 transitions, 210 flow [2023-08-31 04:04:16,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=70, PETRI_TRANSITIONS=54} [2023-08-31 04:04:16,093 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2023-08-31 04:04:16,093 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 54 transitions, 210 flow [2023-08-31 04:04:16,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-31 04:04:16,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:04:16,094 INFO L208 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] [2023-08-31 04:04:16,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 04:04:16,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 04:04:16,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:04:16,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1483561397, now seen corresponding path program 4 times [2023-08-31 04:04:16,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:04:16,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590758172] [2023-08-31 04:04:16,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:04:16,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:04:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:04:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:04:16,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:04:16,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590758172] [2023-08-31 04:04:16,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590758172] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:04:16,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:04:16,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 04:04:16,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740089537] [2023-08-31 04:04:16,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:04:16,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 04:04:16,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:04:16,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 04:04:16,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 04:04:16,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-08-31 04:04:16,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 54 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-31 04:04:16,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:04:16,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-08-31 04:04:16,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:04:16,560 INFO L130 PetriNetUnfolder]: 2894/4963 cut-off events. [2023-08-31 04:04:16,560 INFO L131 PetriNetUnfolder]: For 4304/4457 co-relation queries the response was YES. [2023-08-31 04:04:16,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13605 conditions, 4963 events. 2894/4963 cut-off events. For 4304/4457 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 35623 event pairs, 767 based on Foata normal form. 137/4716 useless extension candidates. Maximal degree in co-relation 10411. Up to 4202 conditions per place. [2023-08-31 04:04:16,583 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 43 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-31 04:04:16,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 343 flow [2023-08-31 04:04:16,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 04:04:16,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 04:04:16,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-08-31 04:04:16,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5912518853695324 [2023-08-31 04:04:16,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-08-31 04:04:16,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-08-31 04:04:16,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:04:16,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-08-31 04:04:16,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2023-08-31 04:04:16,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-08-31 04:04:16,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-08-31 04:04:16,590 INFO L175 Difference]: Start difference. First operand has 70 places, 54 transitions, 210 flow. Second operand 3 states and 392 transitions. [2023-08-31 04:04:16,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 343 flow [2023-08-31 04:04:16,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 339 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 04:04:16,621 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 214 flow [2023-08-31 04:04:16,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2023-08-31 04:04:16,622 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2023-08-31 04:04:16,622 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 214 flow [2023-08-31 04:04:16,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-31 04:04:16,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:04:16,623 INFO L208 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] [2023-08-31 04:04:16,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 04:04:16,623 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 04:04:16,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:04:16,623 INFO L85 PathProgramCache]: Analyzing trace with hash -284950999, now seen corresponding path program 5 times [2023-08-31 04:04:16,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:04:16,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585666926] [2023-08-31 04:04:16,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:04:16,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:04:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:04:16,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:04:16,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:04:16,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585666926] [2023-08-31 04:04:16,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585666926] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:04:16,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:04:16,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 04:04:16,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263905567] [2023-08-31 04:04:16,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:04:16,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 04:04:16,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:04:16,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 04:04:16,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 04:04:16,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-08-31 04:04:16,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-31 04:04:16,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:04:16,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-08-31 04:04:16,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:04:17,041 INFO L130 PetriNetUnfolder]: 2297/4053 cut-off events. [2023-08-31 04:04:17,042 INFO L131 PetriNetUnfolder]: For 3822/3883 co-relation queries the response was YES. [2023-08-31 04:04:17,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11382 conditions, 4053 events. 2297/4053 cut-off events. For 3822/3883 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 27679 event pairs, 594 based on Foata normal form. 126/3920 useless extension candidates. Maximal degree in co-relation 8308. Up to 3150 conditions per place. [2023-08-31 04:04:17,062 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 41 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-31 04:04:17,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 64 transitions, 338 flow [2023-08-31 04:04:17,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 04:04:17,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 04:04:17,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-08-31 04:04:17,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2023-08-31 04:04:17,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-08-31 04:04:17,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-08-31 04:04:17,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:04:17,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-08-31 04:04:17,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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) [2023-08-31 04:04:17,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-08-31 04:04:17,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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) [2023-08-31 04:04:17,067 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 214 flow. Second operand 3 states and 390 transitions. [2023-08-31 04:04:17,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 64 transitions, 338 flow [2023-08-31 04:04:17,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 64 transitions, 332 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 04:04:17,082 INFO L231 Difference]: Finished difference. Result has 72 places, 53 transitions, 210 flow [2023-08-31 04:04:17,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=72, PETRI_TRANSITIONS=53} [2023-08-31 04:04:17,083 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2023-08-31 04:04:17,084 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 53 transitions, 210 flow [2023-08-31 04:04:17,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-31 04:04:17,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:04:17,084 INFO L208 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] [2023-08-31 04:04:17,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 04:04:17,085 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 04:04:17,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:04:17,085 INFO L85 PathProgramCache]: Analyzing trace with hash -13750227, now seen corresponding path program 6 times [2023-08-31 04:04:17,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:04:17,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326822229] [2023-08-31 04:04:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:04:17,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:04:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:04:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:04:18,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:04:18,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326822229] [2023-08-31 04:04:18,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326822229] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:04:18,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:04:18,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-31 04:04:18,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390080979] [2023-08-31 04:04:18,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:04:18,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 04:04:18,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:04:18,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 04:04:18,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-08-31 04:04:18,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-31 04:04:18,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 53 transitions, 210 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:04:18,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:04:18,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-31 04:04:18,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:04:21,014 INFO L130 PetriNetUnfolder]: 15002/22776 cut-off events. [2023-08-31 04:04:21,015 INFO L131 PetriNetUnfolder]: For 18350/18350 co-relation queries the response was YES. [2023-08-31 04:04:21,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65504 conditions, 22776 events. 15002/22776 cut-off events. For 18350/18350 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 146746 event pairs, 3417 based on Foata normal form. 1/22777 useless extension candidates. Maximal degree in co-relation 49841. Up to 7468 conditions per place. [2023-08-31 04:04:21,155 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 224 selfloop transitions, 25 changer transitions 16/269 dead transitions. [2023-08-31 04:04:21,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 269 transitions, 1481 flow [2023-08-31 04:04:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 04:04:21,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 04:04:21,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1519 transitions. [2023-08-31 04:04:21,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49095022624434387 [2023-08-31 04:04:21,160 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1519 transitions. [2023-08-31 04:04:21,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1519 transitions. [2023-08-31 04:04:21,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:04:21,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1519 transitions. [2023-08-31 04:04:21,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.5) internal successors, (1519), 14 states have internal predecessors, (1519), 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) [2023-08-31 04:04:21,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-31 04:04:21,168 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-31 04:04:21,168 INFO L175 Difference]: Start difference. First operand has 72 places, 53 transitions, 210 flow. Second operand 14 states and 1519 transitions. [2023-08-31 04:04:21,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 269 transitions, 1481 flow [2023-08-31 04:04:21,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 269 transitions, 1477 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 04:04:21,426 INFO L231 Difference]: Finished difference. Result has 94 places, 69 transitions, 411 flow [2023-08-31 04:04:21,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=411, PETRI_PLACES=94, PETRI_TRANSITIONS=69} [2023-08-31 04:04:21,427 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2023-08-31 04:04:21,427 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 69 transitions, 411 flow [2023-08-31 04:04:21,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:04:21,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:04:21,428 INFO L208 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] [2023-08-31 04:04:21,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 04:04:21,428 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 04:04:21,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:04:21,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1266939235, now seen corresponding path program 7 times [2023-08-31 04:04:21,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:04:21,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582234983] [2023-08-31 04:04:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:04:21,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:04:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:04:22,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:04:22,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:04:22,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582234983] [2023-08-31 04:04:22,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582234983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:04:22,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:04:22,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-31 04:04:22,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180280676] [2023-08-31 04:04:22,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:04:22,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 04:04:22,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:04:22,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 04:04:22,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-08-31 04:04:23,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-31 04:04:23,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 69 transitions, 411 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:04:23,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:04:23,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-31 04:04:23,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:04:27,238 INFO L130 PetriNetUnfolder]: 28410/43805 cut-off events. [2023-08-31 04:04:27,239 INFO L131 PetriNetUnfolder]: For 100107/100107 co-relation queries the response was YES. [2023-08-31 04:04:27,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154993 conditions, 43805 events. 28410/43805 cut-off events. For 100107/100107 co-relation queries the response was YES. Maximal size of possible extension queue 1535. Compared 319983 event pairs, 6949 based on Foata normal form. 1/43806 useless extension candidates. Maximal degree in co-relation 154752. Up to 14141 conditions per place. [2023-08-31 04:04:27,703 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 258 selfloop transitions, 31 changer transitions 9/302 dead transitions. [2023-08-31 04:04:27,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 302 transitions, 2201 flow [2023-08-31 04:04:27,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 04:04:27,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 04:04:27,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1514 transitions. [2023-08-31 04:04:27,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48933419521654814 [2023-08-31 04:04:27,707 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1514 transitions. [2023-08-31 04:04:27,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1514 transitions. [2023-08-31 04:04:27,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:04:27,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1514 transitions. [2023-08-31 04:04:27,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.14285714285714) internal successors, (1514), 14 states have internal predecessors, (1514), 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) [2023-08-31 04:04:27,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-31 04:04:27,715 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-31 04:04:27,715 INFO L175 Difference]: Start difference. First operand has 94 places, 69 transitions, 411 flow. Second operand 14 states and 1514 transitions. [2023-08-31 04:04:27,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 302 transitions, 2201 flow [2023-08-31 04:04:29,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 302 transitions, 2113 flow, removed 41 selfloop flow, removed 3 redundant places. [2023-08-31 04:04:29,991 INFO L231 Difference]: Finished difference. Result has 114 places, 92 transitions, 732 flow [2023-08-31 04:04:29,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=732, PETRI_PLACES=114, PETRI_TRANSITIONS=92} [2023-08-31 04:04:29,992 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 60 predicate places. [2023-08-31 04:04:29,992 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 92 transitions, 732 flow [2023-08-31 04:04:29,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:04:29,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:04:29,993 INFO L208 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] [2023-08-31 04:04:29,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 04:04:29,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 04:04:29,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:04:29,993 INFO L85 PathProgramCache]: Analyzing trace with hash 30479711, now seen corresponding path program 8 times [2023-08-31 04:04:29,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:04:29,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776945792] [2023-08-31 04:04:29,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:04:29,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:04:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:04:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:04:31,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:04:31,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776945792] [2023-08-31 04:04:31,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776945792] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:04:31,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:04:31,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-31 04:04:31,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748843992] [2023-08-31 04:04:31,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:04:31,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 04:04:31,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:04:31,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 04:04:31,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-08-31 04:04:31,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-31 04:04:31,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 92 transitions, 732 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:04:31,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:04:31,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-31 04:04:31,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:04:38,336 INFO L130 PetriNetUnfolder]: 41197/66288 cut-off events. [2023-08-31 04:04:38,336 INFO L131 PetriNetUnfolder]: For 272737/272737 co-relation queries the response was YES. [2023-08-31 04:04:38,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268266 conditions, 66288 events. 41197/66288 cut-off events. For 272737/272737 co-relation queries the response was YES. Maximal size of possible extension queue 2431. Compared 551214 event pairs, 11845 based on Foata normal form. 1/66281 useless extension candidates. Maximal degree in co-relation 267499. Up to 20176 conditions per place. [2023-08-31 04:04:38,922 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 349 selfloop transitions, 46 changer transitions 10/409 dead transitions. [2023-08-31 04:04:38,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 409 transitions, 3727 flow [2023-08-31 04:04:38,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 04:04:38,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 04:04:38,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1525 transitions. [2023-08-31 04:04:38,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928894634776988 [2023-08-31 04:04:38,925 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1525 transitions. [2023-08-31 04:04:38,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1525 transitions. [2023-08-31 04:04:38,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:04:38,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1525 transitions. [2023-08-31 04:04:38,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.92857142857143) internal successors, (1525), 14 states have internal predecessors, (1525), 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) [2023-08-31 04:04:38,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-31 04:04:38,933 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-31 04:04:38,933 INFO L175 Difference]: Start difference. First operand has 114 places, 92 transitions, 732 flow. Second operand 14 states and 1525 transitions. [2023-08-31 04:04:38,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 409 transitions, 3727 flow [2023-08-31 04:04:44,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 409 transitions, 3642 flow, removed 37 selfloop flow, removed 2 redundant places. [2023-08-31 04:04:44,079 INFO L231 Difference]: Finished difference. Result has 136 places, 130 transitions, 1329 flow [2023-08-31 04:04:44,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1329, PETRI_PLACES=136, PETRI_TRANSITIONS=130} [2023-08-31 04:04:44,079 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2023-08-31 04:04:44,080 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 130 transitions, 1329 flow [2023-08-31 04:04:44,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:04:44,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:04:44,080 INFO L208 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] [2023-08-31 04:04:44,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 04:04:44,081 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 04:04:44,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:04:44,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1487531239, now seen corresponding path program 9 times [2023-08-31 04:04:44,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:04:44,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701068763] [2023-08-31 04:04:44,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:04:44,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:04:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:04:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:04:45,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:04:45,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701068763] [2023-08-31 04:04:45,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701068763] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:04:45,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:04:45,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-31 04:04:45,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241198809] [2023-08-31 04:04:45,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:04:45,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 04:04:45,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:04:45,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 04:04:45,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-08-31 04:04:45,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-31 04:04:45,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 130 transitions, 1329 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:04:45,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:04:45,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-31 04:04:45,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:04:55,753 INFO L130 PetriNetUnfolder]: 54513/90805 cut-off events. [2023-08-31 04:04:55,754 INFO L131 PetriNetUnfolder]: For 630352/630352 co-relation queries the response was YES. [2023-08-31 04:04:56,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419058 conditions, 90805 events. 54513/90805 cut-off events. For 630352/630352 co-relation queries the response was YES. Maximal size of possible extension queue 3630. Compared 828791 event pairs, 14555 based on Foata normal form. 1/90806 useless extension candidates. Maximal degree in co-relation 417605. Up to 30063 conditions per place. [2023-08-31 04:04:56,709 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 391 selfloop transitions, 60 changer transitions 10/465 dead transitions. [2023-08-31 04:04:56,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 465 transitions, 5078 flow [2023-08-31 04:04:56,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 04:04:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 04:04:56,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1521 transitions. [2023-08-31 04:04:56,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49159663865546216 [2023-08-31 04:04:56,713 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1521 transitions. [2023-08-31 04:04:56,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1521 transitions. [2023-08-31 04:04:56,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:04:56,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1521 transitions. [2023-08-31 04:04:56,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.64285714285714) internal successors, (1521), 14 states have internal predecessors, (1521), 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) [2023-08-31 04:04:56,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-31 04:04:56,720 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-31 04:04:56,720 INFO L175 Difference]: Start difference. First operand has 136 places, 130 transitions, 1329 flow. Second operand 14 states and 1521 transitions. [2023-08-31 04:04:56,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 465 transitions, 5078 flow [2023-08-31 04:05:07,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 465 transitions, 4952 flow, removed 58 selfloop flow, removed 3 redundant places. [2023-08-31 04:05:07,862 INFO L231 Difference]: Finished difference. Result has 157 places, 177 transitions, 2155 flow [2023-08-31 04:05:07,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2155, PETRI_PLACES=157, PETRI_TRANSITIONS=177} [2023-08-31 04:05:07,863 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 103 predicate places. [2023-08-31 04:05:07,863 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 177 transitions, 2155 flow [2023-08-31 04:05:07,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:05:07,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:05:07,864 INFO L208 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] [2023-08-31 04:05:07,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 04:05:07,864 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 04:05:07,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:05:07,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1107932573, now seen corresponding path program 10 times [2023-08-31 04:05:07,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:05:07,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356643422] [2023-08-31 04:05:07,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:05:07,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:05:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:05:08,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:05:08,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:05:08,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356643422] [2023-08-31 04:05:08,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356643422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:05:08,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:05:08,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-31 04:05:08,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410907103] [2023-08-31 04:05:08,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:05:08,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 04:05:08,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:05:08,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 04:05:08,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-08-31 04:05:09,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-31 04:05:09,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 177 transitions, 2155 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:05:09,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:05:09,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-31 04:05:09,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:05:23,804 INFO L130 PetriNetUnfolder]: 66044/112152 cut-off events. [2023-08-31 04:05:23,804 INFO L131 PetriNetUnfolder]: For 1059112/1059112 co-relation queries the response was YES. [2023-08-31 04:05:24,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564738 conditions, 112152 events. 66044/112152 cut-off events. For 1059112/1059112 co-relation queries the response was YES. Maximal size of possible extension queue 4704. Compared 1088300 event pairs, 20405 based on Foata normal form. 1/112153 useless extension candidates. Maximal degree in co-relation 562726. Up to 32599 conditions per place. [2023-08-31 04:05:24,923 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 434 selfloop transitions, 98 changer transitions 17/553 dead transitions. [2023-08-31 04:05:24,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 553 transitions, 6802 flow [2023-08-31 04:05:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 04:05:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 04:05:24,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1536 transitions. [2023-08-31 04:05:25,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4964447317388494 [2023-08-31 04:05:25,062 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1536 transitions. [2023-08-31 04:05:25,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1536 transitions. [2023-08-31 04:05:25,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:05:25,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1536 transitions. [2023-08-31 04:05:25,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.71428571428571) internal successors, (1536), 14 states have internal predecessors, (1536), 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) [2023-08-31 04:05:25,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-31 04:05:25,070 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-31 04:05:25,070 INFO L175 Difference]: Start difference. First operand has 157 places, 177 transitions, 2155 flow. Second operand 14 states and 1536 transitions. [2023-08-31 04:05:25,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 553 transitions, 6802 flow [2023-08-31 04:05:43,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 553 transitions, 6661 flow, removed 57 selfloop flow, removed 2 redundant places. [2023-08-31 04:05:43,550 INFO L231 Difference]: Finished difference. Result has 179 places, 228 transitions, 3285 flow [2023-08-31 04:05:43,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=2086, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3285, PETRI_PLACES=179, PETRI_TRANSITIONS=228} [2023-08-31 04:05:43,551 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 125 predicate places. [2023-08-31 04:05:43,551 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 228 transitions, 3285 flow [2023-08-31 04:05:43,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:05:43,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:05:43,552 INFO L208 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] [2023-08-31 04:05:43,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 04:05:43,552 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 04:05:43,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:05:43,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1586974173, now seen corresponding path program 11 times [2023-08-31 04:05:43,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:05:43,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509551019] [2023-08-31 04:05:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:05:43,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:05:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:05:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:05:44,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:05:44,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509551019] [2023-08-31 04:05:44,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509551019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:05:44,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:05:44,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-31 04:05:44,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498113951] [2023-08-31 04:05:44,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:05:44,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 04:05:44,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:05:44,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 04:05:44,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-08-31 04:05:44,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-31 04:05:44,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 228 transitions, 3285 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:05:44,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:05:44,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-31 04:05:44,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:06:08,108 INFO L130 PetriNetUnfolder]: 90242/156259 cut-off events. [2023-08-31 04:06:08,108 INFO L131 PetriNetUnfolder]: For 2095632/2095632 co-relation queries the response was YES. [2023-08-31 04:06:09,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867893 conditions, 156259 events. 90242/156259 cut-off events. For 2095632/2095632 co-relation queries the response was YES. Maximal size of possible extension queue 6832. Compared 1620769 event pairs, 30341 based on Foata normal form. 1/156260 useless extension candidates. Maximal degree in co-relation 864748. Up to 55511 conditions per place. [2023-08-31 04:06:10,099 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 526 selfloop transitions, 96 changer transitions 9/635 dead transitions. [2023-08-31 04:06:10,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 635 transitions, 9307 flow [2023-08-31 04:06:10,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 04:06:10,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 04:06:10,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1526 transitions. [2023-08-31 04:06:10,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49321266968325794 [2023-08-31 04:06:10,102 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1526 transitions. [2023-08-31 04:06:10,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1526 transitions. [2023-08-31 04:06:10,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:06:10,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1526 transitions. [2023-08-31 04:06:10,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.0) internal successors, (1526), 14 states have internal predecessors, (1526), 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) [2023-08-31 04:06:10,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-31 04:06:10,119 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-31 04:06:10,119 INFO L175 Difference]: Start difference. First operand has 179 places, 228 transitions, 3285 flow. Second operand 14 states and 1526 transitions. [2023-08-31 04:06:10,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 635 transitions, 9307 flow [2023-08-31 04:07:13,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 635 transitions, 9071 flow, removed 113 selfloop flow, removed 3 redundant places. [2023-08-31 04:07:13,262 INFO L231 Difference]: Finished difference. Result has 198 places, 284 transitions, 4520 flow [2023-08-31 04:07:13,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=3186, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4520, PETRI_PLACES=198, PETRI_TRANSITIONS=284} [2023-08-31 04:07:13,263 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 144 predicate places. [2023-08-31 04:07:13,263 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 284 transitions, 4520 flow [2023-08-31 04:07:13,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:07:13,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:07:13,263 INFO L208 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] [2023-08-31 04:07:13,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 04:07:13,263 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 04:07:13,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:07:13,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1403488815, now seen corresponding path program 12 times [2023-08-31 04:07:13,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:07:13,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974739197] [2023-08-31 04:07:13,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:07:13,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:07:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:07:14,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:07:14,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:07:14,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974739197] [2023-08-31 04:07:14,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974739197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:07:14,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:07:14,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-31 04:07:14,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356698443] [2023-08-31 04:07:14,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:07:14,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 04:07:14,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:07:14,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 04:07:14,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-08-31 04:07:14,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-31 04:07:14,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 284 transitions, 4520 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:07:14,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:07:14,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-31 04:07:14,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:07:44,094 INFO L130 PetriNetUnfolder]: 100009/174328 cut-off events. [2023-08-31 04:07:44,094 INFO L131 PetriNetUnfolder]: For 2773027/2773027 co-relation queries the response was YES. [2023-08-31 04:07:45,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1019138 conditions, 174328 events. 100009/174328 cut-off events. For 2773027/2773027 co-relation queries the response was YES. Maximal size of possible extension queue 7845. Compared 1852021 event pairs, 41113 based on Foata normal form. 1/174329 useless extension candidates. Maximal degree in co-relation 1015423. Up to 70934 conditions per place. [2023-08-31 04:07:46,585 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 513 selfloop transitions, 121 changer transitions 10/648 dead transitions. [2023-08-31 04:07:46,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 648 transitions, 9896 flow [2023-08-31 04:07:46,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 04:07:46,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 04:07:46,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1538 transitions. [2023-08-31 04:07:46,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4970911441499677 [2023-08-31 04:07:46,587 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1538 transitions. [2023-08-31 04:07:46,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1538 transitions. [2023-08-31 04:07:46,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:07:46,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1538 transitions. [2023-08-31 04:07:46,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.85714285714286) internal successors, (1538), 14 states have internal predecessors, (1538), 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) [2023-08-31 04:07:46,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-31 04:07:46,593 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-31 04:07:46,593 INFO L175 Difference]: Start difference. First operand has 198 places, 284 transitions, 4520 flow. Second operand 14 states and 1538 transitions. [2023-08-31 04:07:46,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 648 transitions, 9896 flow [2023-08-31 04:09:21,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 648 transitions, 9466 flow, removed 187 selfloop flow, removed 3 redundant places. [2023-08-31 04:09:21,158 INFO L231 Difference]: Finished difference. Result has 217 places, 332 transitions, 5616 flow [2023-08-31 04:09:21,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=4341, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5616, PETRI_PLACES=217, PETRI_TRANSITIONS=332} [2023-08-31 04:09:21,159 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 163 predicate places. [2023-08-31 04:09:21,159 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 332 transitions, 5616 flow [2023-08-31 04:09:21,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:09:21,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:09:21,159 INFO L208 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] [2023-08-31 04:09:21,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 04:09:21,160 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 04:09:21,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:09:21,160 INFO L85 PathProgramCache]: Analyzing trace with hash -624871641, now seen corresponding path program 13 times [2023-08-31 04:09:21,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:09:21,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297349750] [2023-08-31 04:09:21,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:09:21,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:09:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:09:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:09:22,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:09:22,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297349750] [2023-08-31 04:09:22,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297349750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:09:22,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:09:22,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-31 04:09:22,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982675850] [2023-08-31 04:09:22,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:09:22,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 04:09:22,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:09:22,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 04:09:22,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-31 04:09:22,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-31 04:09:22,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 332 transitions, 5616 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:09:22,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:09:22,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-31 04:09:22,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:10:00,194 INFO L130 PetriNetUnfolder]: 118144/211782 cut-off events. [2023-08-31 04:10:00,194 INFO L131 PetriNetUnfolder]: For 4050752/4050752 co-relation queries the response was YES. [2023-08-31 04:10:02,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1318891 conditions, 211782 events. 118144/211782 cut-off events. For 4050752/4050752 co-relation queries the response was YES. Maximal size of possible extension queue 10092. Compared 2388645 event pairs, 37861 based on Foata normal form. 1/211783 useless extension candidates. Maximal degree in co-relation 1313343. Up to 61696 conditions per place. [2023-08-31 04:10:03,302 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 639 selfloop transitions, 160 changer transitions 11/814 dead transitions. [2023-08-31 04:10:03,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 814 transitions, 14413 flow [2023-08-31 04:10:03,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 04:10:03,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 04:10:03,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1513 transitions. [2023-08-31 04:10:03,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489010989010989 [2023-08-31 04:10:03,305 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1513 transitions. [2023-08-31 04:10:03,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1513 transitions. [2023-08-31 04:10:03,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:10:03,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1513 transitions. [2023-08-31 04:10:03,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.07142857142857) internal successors, (1513), 14 states have internal predecessors, (1513), 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) [2023-08-31 04:10:03,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-31 04:10:03,309 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 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) [2023-08-31 04:10:03,309 INFO L175 Difference]: Start difference. First operand has 217 places, 332 transitions, 5616 flow. Second operand 14 states and 1513 transitions. [2023-08-31 04:10:03,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 814 transitions, 14413 flow [2023-08-31 04:13:27,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 814 transitions, 14014 flow, removed 147 selfloop flow, removed 3 redundant places. [2023-08-31 04:13:27,542 INFO L231 Difference]: Finished difference. Result has 237 places, 396 transitions, 7197 flow [2023-08-31 04:13:27,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=5418, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7197, PETRI_PLACES=237, PETRI_TRANSITIONS=396} [2023-08-31 04:13:27,542 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 183 predicate places. [2023-08-31 04:13:27,543 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 396 transitions, 7197 flow [2023-08-31 04:13:27,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:13:27,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:13:27,543 INFO L208 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] [2023-08-31 04:13:27,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 04:13:27,543 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-31 04:13:27,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:13:27,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1512682411, now seen corresponding path program 14 times [2023-08-31 04:13:27,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:13:27,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684384908] [2023-08-31 04:13:27,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:13:27,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:13:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:13:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:13:28,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:13:28,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684384908] [2023-08-31 04:13:28,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684384908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:13:28,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:13:28,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-31 04:13:28,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839979703] [2023-08-31 04:13:28,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:13:28,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 04:13:28,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:13:28,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 04:13:28,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-08-31 04:13:28,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 221 [2023-08-31 04:13:28,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 396 transitions, 7197 flow. Second operand has 14 states, 14 states have (on average 94.64285714285714) internal successors, (1325), 14 states have internal predecessors, (1325), 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) [2023-08-31 04:13:28,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:13:28,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 221 [2023-08-31 04:13:28,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand