./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:25:44,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:25:44,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:25:44,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:25:44,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:25:44,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:25:44,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:25:44,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:25:44,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:25:44,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:25:44,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:25:44,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:25:44,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:25:44,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:25:44,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:25:44,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:25:44,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:25:44,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:25:44,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:25:44,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:25:44,259 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:25:44,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:25:44,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:25:44,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:25:44,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:25:44,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:25:44,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:25:44,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:25:44,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:25:44,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:25:44,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:25:44,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:25:44,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:25:44,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:25:44,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:25:44,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:25:44,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:25:44,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:25:44,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:25:44,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:25:44,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:25:44,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:25:44,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:25:44,305 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:25:44,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:25:44,306 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:25:44,306 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:25:44,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:25:44,307 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:25:44,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:25:44,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:25:44,308 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:25:44,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:25:44,309 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:25:44,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:25:44,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:25:44,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:25:44,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:25:44,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:25:44,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:25:44,310 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:25:44,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:25:44,310 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:25:44,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:25:44,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:25:44,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:25:44,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:25:44,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:25:44,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:25:44,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:25:44,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:25:44,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:25:44,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:25:44,312 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:25:44,312 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:25:44,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:25:44,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 [2022-07-12 10:25:44,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:25:44,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:25:44,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:25:44,520 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:25:44,521 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:25:44,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-07-12 10:25:44,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05be3358/e569873f7a454ab5930a0bbbfa7d942b/FLAG46147deca [2022-07-12 10:25:44,936 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:25:44,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-07-12 10:25:44,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05be3358/e569873f7a454ab5930a0bbbfa7d942b/FLAG46147deca [2022-07-12 10:25:44,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05be3358/e569873f7a454ab5930a0bbbfa7d942b [2022-07-12 10:25:44,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:25:44,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:25:44,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:25:44,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:25:44,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:25:44,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:25:44" (1/1) ... [2022-07-12 10:25:44,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a8c87d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:44, skipping insertion in model container [2022-07-12 10:25:44,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:25:44" (1/1) ... [2022-07-12 10:25:44,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:25:44,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:25:45,160 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-07-12 10:25:45,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:25:45,180 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:25:45,213 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-07-12 10:25:45,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:25:45,234 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:25:45,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:45 WrapperNode [2022-07-12 10:25:45,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:25:45,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:25:45,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:25:45,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:25:45,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:45" (1/1) ... [2022-07-12 10:25:45,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:45" (1/1) ... [2022-07-12 10:25:45,271 INFO L137 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 172 [2022-07-12 10:25:45,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:25:45,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:25:45,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:25:45,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:25:45,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:45" (1/1) ... [2022-07-12 10:25:45,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:45" (1/1) ... [2022-07-12 10:25:45,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:45" (1/1) ... [2022-07-12 10:25:45,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:45" (1/1) ... [2022-07-12 10:25:45,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:45" (1/1) ... [2022-07-12 10:25:45,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:45" (1/1) ... [2022-07-12 10:25:45,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:45" (1/1) ... [2022-07-12 10:25:45,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:25:45,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:25:45,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:25:45,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:25:45,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:45" (1/1) ... [2022-07-12 10:25:45,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:25:45,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:25:45,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:25:45,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:25:45,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:25:45,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:25:45,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:25:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:25:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:25:45,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:25:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:25:45,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:25:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:25:45,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:25:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:25:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:25:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:25:45,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:25:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:25:45,368 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:25:45,439 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:25:45,440 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:25:45,753 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:25:45,761 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:25:45,761 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-12 10:25:45,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:25:45 BoogieIcfgContainer [2022-07-12 10:25:45,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:25:45,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:25:45,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:25:45,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:25:45,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:25:44" (1/3) ... [2022-07-12 10:25:45,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3efdad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:25:45, skipping insertion in model container [2022-07-12 10:25:45,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:45" (2/3) ... [2022-07-12 10:25:45,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3efdad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:25:45, skipping insertion in model container [2022-07-12 10:25:45,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:25:45" (3/3) ... [2022-07-12 10:25:45,768 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2022-07-12 10:25:45,771 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:25:45,777 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:25:45,777 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:25:45,778 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:25:45,838 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-12 10:25:45,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 308 places, 332 transitions, 688 flow [2022-07-12 10:25:45,994 INFO L129 PetriNetUnfolder]: 34/329 cut-off events. [2022-07-12 10:25:45,994 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:25:46,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 329 events. 34/329 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 507 event pairs, 0 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 261. Up to 3 conditions per place. [2022-07-12 10:25:46,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 332 transitions, 688 flow [2022-07-12 10:25:46,011 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 318 transitions, 654 flow [2022-07-12 10:25:46,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:25:46,026 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@78cf0b10, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@64fcf90a [2022-07-12 10:25:46,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:25:46,077 INFO L129 PetriNetUnfolder]: 34/317 cut-off events. [2022-07-12 10:25:46,078 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:25:46,078 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:46,079 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:46,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:46,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:46,083 INFO L85 PathProgramCache]: Analyzing trace with hash -486084204, now seen corresponding path program 1 times [2022-07-12 10:25:46,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:46,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336672189] [2022-07-12 10:25:46,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:46,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:46,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:46,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336672189] [2022-07-12 10:25:46,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336672189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:46,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:46,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:25:46,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117817429] [2022-07-12 10:25:46,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:46,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:25:46,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:46,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:25:46,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:25:46,379 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 332 [2022-07-12 10:25:46,387 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 318 transitions, 654 flow. Second operand has 2 states, 2 states have (on average 316.5) internal successors, (633), 2 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:46,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 332 [2022-07-12 10:25:46,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:46,459 INFO L129 PetriNetUnfolder]: 21/305 cut-off events. [2022-07-12 10:25:46,460 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-07-12 10:25:46,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 305 events. 21/305 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 499 event pairs, 0 based on Foata normal form. 19/296 useless extension candidates. Maximal degree in co-relation 252. Up to 7 conditions per place. [2022-07-12 10:25:46,465 INFO L132 encePairwiseOnDemand]: 319/332 looper letters, 6 selfloop transitions, 0 changer transitions 7/305 dead transitions. [2022-07-12 10:25:46,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 305 transitions, 640 flow [2022-07-12 10:25:46,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:25:46,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:25:46,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 643 transitions. [2022-07-12 10:25:46,482 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9683734939759037 [2022-07-12 10:25:46,483 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 643 transitions. [2022-07-12 10:25:46,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 643 transitions. [2022-07-12 10:25:46,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:46,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 643 transitions. [2022-07-12 10:25:46,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 321.5) internal successors, (643), 2 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,504 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,506 INFO L186 Difference]: Start difference. First operand has 294 places, 318 transitions, 654 flow. Second operand 2 states and 643 transitions. [2022-07-12 10:25:46,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 305 transitions, 640 flow [2022-07-12 10:25:46,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 305 transitions, 628 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:25:46,520 INFO L242 Difference]: Finished difference. Result has 289 places, 298 transitions, 602 flow [2022-07-12 10:25:46,522 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=602, PETRI_PLACES=289, PETRI_TRANSITIONS=298} [2022-07-12 10:25:46,527 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, -5 predicate places. [2022-07-12 10:25:46,528 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 298 transitions, 602 flow [2022-07-12 10:25:46,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 316.5) internal successors, (633), 2 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,528 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:46,529 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:46,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:25:46,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:46,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:46,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1734824051, now seen corresponding path program 1 times [2022-07-12 10:25:46,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:46,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157702302] [2022-07-12 10:25:46,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:46,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:46,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:46,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:46,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157702302] [2022-07-12 10:25:46,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157702302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:46,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:46,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:46,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462047552] [2022-07-12 10:25:46,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:46,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:46,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:46,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:46,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:46,728 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 332 [2022-07-12 10:25:46,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 298 transitions, 602 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:46,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 332 [2022-07-12 10:25:46,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:46,796 INFO L129 PetriNetUnfolder]: 40/410 cut-off events. [2022-07-12 10:25:46,796 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-07-12 10:25:46,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 410 events. 40/410 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1086 event pairs, 6 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 451. Up to 22 conditions per place. [2022-07-12 10:25:46,800 INFO L132 encePairwiseOnDemand]: 329/332 looper letters, 13 selfloop transitions, 2 changer transitions 0/303 dead transitions. [2022-07-12 10:25:46,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 303 transitions, 646 flow [2022-07-12 10:25:46,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:25:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:25:46,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 940 transitions. [2022-07-12 10:25:46,802 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9437751004016064 [2022-07-12 10:25:46,802 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 940 transitions. [2022-07-12 10:25:46,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 940 transitions. [2022-07-12 10:25:46,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:46,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 940 transitions. [2022-07-12 10:25:46,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,808 INFO L186 Difference]: Start difference. First operand has 289 places, 298 transitions, 602 flow. Second operand 3 states and 940 transitions. [2022-07-12 10:25:46,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 303 transitions, 646 flow [2022-07-12 10:25:46,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 303 transitions, 646 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:25:46,814 INFO L242 Difference]: Finished difference. Result has 285 places, 298 transitions, 610 flow [2022-07-12 10:25:46,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=610, PETRI_PLACES=285, PETRI_TRANSITIONS=298} [2022-07-12 10:25:46,815 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, -9 predicate places. [2022-07-12 10:25:46,816 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 298 transitions, 610 flow [2022-07-12 10:25:46,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,816 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:46,817 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:46,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:25:46,817 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:46,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:46,817 INFO L85 PathProgramCache]: Analyzing trace with hash -255056521, now seen corresponding path program 1 times [2022-07-12 10:25:46,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:46,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780311657] [2022-07-12 10:25:46,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:46,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:46,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:46,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780311657] [2022-07-12 10:25:46,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780311657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:46,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:46,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:46,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973826266] [2022-07-12 10:25:46,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:46,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:46,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:46,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:46,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:46,927 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 332 [2022-07-12 10:25:46,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 298 transitions, 610 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:46,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 332 [2022-07-12 10:25:46,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:46,985 INFO L129 PetriNetUnfolder]: 49/480 cut-off events. [2022-07-12 10:25:46,985 INFO L130 PetriNetUnfolder]: For 23/27 co-relation queries the response was YES. [2022-07-12 10:25:46,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 480 events. 49/480 cut-off events. For 23/27 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1436 event pairs, 9 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 532. Up to 30 conditions per place. [2022-07-12 10:25:46,988 INFO L132 encePairwiseOnDemand]: 329/332 looper letters, 12 selfloop transitions, 2 changer transitions 0/302 dead transitions. [2022-07-12 10:25:46,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 302 transitions, 649 flow [2022-07-12 10:25:46,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:25:46,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:25:46,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 939 transitions. [2022-07-12 10:25:46,990 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9427710843373494 [2022-07-12 10:25:46,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 939 transitions. [2022-07-12 10:25:46,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 939 transitions. [2022-07-12 10:25:46,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:46,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 939 transitions. [2022-07-12 10:25:46,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:46,995 INFO L186 Difference]: Start difference. First operand has 285 places, 298 transitions, 610 flow. Second operand 3 states and 939 transitions. [2022-07-12 10:25:46,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 302 transitions, 649 flow [2022-07-12 10:25:46,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 302 transitions, 645 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:47,000 INFO L242 Difference]: Finished difference. Result has 286 places, 298 transitions, 614 flow [2022-07-12 10:25:47,000 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=614, PETRI_PLACES=286, PETRI_TRANSITIONS=298} [2022-07-12 10:25:47,002 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, -8 predicate places. [2022-07-12 10:25:47,002 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 298 transitions, 614 flow [2022-07-12 10:25:47,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,003 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:47,003 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:47,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:25:47,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:47,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:47,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1328800531, now seen corresponding path program 1 times [2022-07-12 10:25:47,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:47,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970544361] [2022-07-12 10:25:47,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:47,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:47,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:47,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:47,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970544361] [2022-07-12 10:25:47,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970544361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:47,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:47,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:47,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628690474] [2022-07-12 10:25:47,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:47,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:47,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:47,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:47,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:47,101 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 332 [2022-07-12 10:25:47,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 298 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:47,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 332 [2022-07-12 10:25:47,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:47,175 INFO L129 PetriNetUnfolder]: 45/557 cut-off events. [2022-07-12 10:25:47,175 INFO L130 PetriNetUnfolder]: For 17/30 co-relation queries the response was YES. [2022-07-12 10:25:47,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 557 events. 45/557 cut-off events. For 17/30 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1958 event pairs, 4 based on Foata normal form. 1/515 useless extension candidates. Maximal degree in co-relation 628. Up to 26 conditions per place. [2022-07-12 10:25:47,180 INFO L132 encePairwiseOnDemand]: 329/332 looper letters, 14 selfloop transitions, 2 changer transitions 0/304 dead transitions. [2022-07-12 10:25:47,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 304 transitions, 663 flow [2022-07-12 10:25:47,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:25:47,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:25:47,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 941 transitions. [2022-07-12 10:25:47,182 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9447791164658634 [2022-07-12 10:25:47,182 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 941 transitions. [2022-07-12 10:25:47,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 941 transitions. [2022-07-12 10:25:47,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:47,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 941 transitions. [2022-07-12 10:25:47,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,189 INFO L186 Difference]: Start difference. First operand has 286 places, 298 transitions, 614 flow. Second operand 3 states and 941 transitions. [2022-07-12 10:25:47,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 304 transitions, 663 flow [2022-07-12 10:25:47,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 304 transitions, 659 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:47,194 INFO L242 Difference]: Finished difference. Result has 287 places, 298 transitions, 618 flow [2022-07-12 10:25:47,194 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=618, PETRI_PLACES=287, PETRI_TRANSITIONS=298} [2022-07-12 10:25:47,196 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, -7 predicate places. [2022-07-12 10:25:47,196 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 298 transitions, 618 flow [2022-07-12 10:25:47,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,197 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:47,197 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:47,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:25:47,198 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:47,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:47,198 INFO L85 PathProgramCache]: Analyzing trace with hash -172403159, now seen corresponding path program 1 times [2022-07-12 10:25:47,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:47,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123793980] [2022-07-12 10:25:47,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:47,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:47,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:47,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123793980] [2022-07-12 10:25:47,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123793980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:47,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:47,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:25:47,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543343101] [2022-07-12 10:25:47,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:47,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:25:47,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:47,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:25:47,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:25:47,377 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 332 [2022-07-12 10:25:47,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 298 transitions, 618 flow. Second operand has 7 states, 7 states have (on average 257.42857142857144) internal successors, (1802), 7 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:47,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 332 [2022-07-12 10:25:47,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:48,103 INFO L129 PetriNetUnfolder]: 1133/4068 cut-off events. [2022-07-12 10:25:48,103 INFO L130 PetriNetUnfolder]: For 227/227 co-relation queries the response was YES. [2022-07-12 10:25:48,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5976 conditions, 4068 events. 1133/4068 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 35229 event pairs, 481 based on Foata normal form. 8/3531 useless extension candidates. Maximal degree in co-relation 5969. Up to 1148 conditions per place. [2022-07-12 10:25:48,133 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 86 selfloop transitions, 2 changer transitions 8/333 dead transitions. [2022-07-12 10:25:48,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 333 transitions, 889 flow [2022-07-12 10:25:48,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:25:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:25:48,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1847 transitions. [2022-07-12 10:25:48,137 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.794750430292599 [2022-07-12 10:25:48,137 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1847 transitions. [2022-07-12 10:25:48,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1847 transitions. [2022-07-12 10:25:48,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:48,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1847 transitions. [2022-07-12 10:25:48,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.85714285714283) internal successors, (1847), 7 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:48,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:48,159 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:48,159 INFO L186 Difference]: Start difference. First operand has 287 places, 298 transitions, 618 flow. Second operand 7 states and 1847 transitions. [2022-07-12 10:25:48,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 333 transitions, 889 flow [2022-07-12 10:25:48,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 333 transitions, 885 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:48,164 INFO L242 Difference]: Finished difference. Result has 296 places, 299 transitions, 633 flow [2022-07-12 10:25:48,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=633, PETRI_PLACES=296, PETRI_TRANSITIONS=299} [2022-07-12 10:25:48,166 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 2 predicate places. [2022-07-12 10:25:48,167 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 299 transitions, 633 flow [2022-07-12 10:25:48,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 257.42857142857144) internal successors, (1802), 7 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:48,168 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:48,168 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:48,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:25:48,168 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:48,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:48,169 INFO L85 PathProgramCache]: Analyzing trace with hash 662437569, now seen corresponding path program 2 times [2022-07-12 10:25:48,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:48,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184287630] [2022-07-12 10:25:48,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:48,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:48,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:48,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184287630] [2022-07-12 10:25:48,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184287630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:48,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:48,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:48,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607764861] [2022-07-12 10:25:48,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:48,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:48,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:48,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:48,377 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 332 [2022-07-12 10:25:48,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 299 transitions, 633 flow. Second operand has 14 states, 14 states have (on average 235.5) internal successors, (3297), 14 states have internal predecessors, (3297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:48,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:48,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 332 [2022-07-12 10:25:48,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:49,651 INFO L129 PetriNetUnfolder]: 1374/7294 cut-off events. [2022-07-12 10:25:49,652 INFO L130 PetriNetUnfolder]: For 1469/1575 co-relation queries the response was YES. [2022-07-12 10:25:49,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10751 conditions, 7294 events. 1374/7294 cut-off events. For 1469/1575 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 78527 event pairs, 495 based on Foata normal form. 24/6463 useless extension candidates. Maximal degree in co-relation 10739. Up to 701 conditions per place. [2022-07-12 10:25:49,703 INFO L132 encePairwiseOnDemand]: 309/332 looper letters, 141 selfloop transitions, 25 changer transitions 4/388 dead transitions. [2022-07-12 10:25:49,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 388 transitions, 1207 flow [2022-07-12 10:25:49,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:25:49,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:25:49,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4787 transitions. [2022-07-12 10:25:49,713 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.720933734939759 [2022-07-12 10:25:49,713 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4787 transitions. [2022-07-12 10:25:49,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4787 transitions. [2022-07-12 10:25:49,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:49,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4787 transitions. [2022-07-12 10:25:49,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 239.35) internal successors, (4787), 20 states have internal predecessors, (4787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:49,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 332.0) internal successors, (6972), 21 states have internal predecessors, (6972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:49,734 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 332.0) internal successors, (6972), 21 states have internal predecessors, (6972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:49,735 INFO L186 Difference]: Start difference. First operand has 296 places, 299 transitions, 633 flow. Second operand 20 states and 4787 transitions. [2022-07-12 10:25:49,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 388 transitions, 1207 flow [2022-07-12 10:25:49,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 388 transitions, 1187 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-07-12 10:25:49,752 INFO L242 Difference]: Finished difference. Result has 320 places, 313 transitions, 766 flow [2022-07-12 10:25:49,752 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=766, PETRI_PLACES=320, PETRI_TRANSITIONS=313} [2022-07-12 10:25:49,753 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 26 predicate places. [2022-07-12 10:25:49,753 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 313 transitions, 766 flow [2022-07-12 10:25:49,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.5) internal successors, (3297), 14 states have internal predecessors, (3297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:49,754 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:49,754 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:49,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:25:49,755 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:49,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:49,755 INFO L85 PathProgramCache]: Analyzing trace with hash 154251013, now seen corresponding path program 1 times [2022-07-12 10:25:49,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:49,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027298165] [2022-07-12 10:25:49,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:49,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:49,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:49,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027298165] [2022-07-12 10:25:49,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027298165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:49,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:49,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:25:49,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361281855] [2022-07-12 10:25:49,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:49,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:25:49,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:49,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:25:49,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:25:49,803 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-12 10:25:49,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 313 transitions, 766 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:49,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:49,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-12 10:25:49,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:50,718 INFO L129 PetriNetUnfolder]: 1169/7999 cut-off events. [2022-07-12 10:25:50,719 INFO L130 PetriNetUnfolder]: For 669/723 co-relation queries the response was YES. [2022-07-12 10:25:50,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10758 conditions, 7999 events. 1169/7999 cut-off events. For 669/723 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 92341 event pairs, 320 based on Foata normal form. 16/6960 useless extension candidates. Maximal degree in co-relation 10737. Up to 607 conditions per place. [2022-07-12 10:25:50,761 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 52 selfloop transitions, 9 changer transitions 0/350 dead transitions. [2022-07-12 10:25:50,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 350 transitions, 973 flow [2022-07-12 10:25:50,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:50,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:50,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1533 transitions. [2022-07-12 10:25:50,764 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9234939759036145 [2022-07-12 10:25:50,764 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1533 transitions. [2022-07-12 10:25:50,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1533 transitions. [2022-07-12 10:25:50,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:50,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1533 transitions. [2022-07-12 10:25:50,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.6) internal successors, (1533), 5 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,770 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,770 INFO L186 Difference]: Start difference. First operand has 320 places, 313 transitions, 766 flow. Second operand 5 states and 1533 transitions. [2022-07-12 10:25:50,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 350 transitions, 973 flow [2022-07-12 10:25:50,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 350 transitions, 961 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-07-12 10:25:50,780 INFO L242 Difference]: Finished difference. Result has 320 places, 322 transitions, 821 flow [2022-07-12 10:25:50,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=821, PETRI_PLACES=320, PETRI_TRANSITIONS=322} [2022-07-12 10:25:50,782 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 26 predicate places. [2022-07-12 10:25:50,782 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 322 transitions, 821 flow [2022-07-12 10:25:50,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,783 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:50,783 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:50,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:25:50,783 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:50,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:50,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1371883607, now seen corresponding path program 2 times [2022-07-12 10:25:50,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:50,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847217180] [2022-07-12 10:25:50,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:50,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:50,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:50,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:50,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847217180] [2022-07-12 10:25:50,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847217180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:50,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:50,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:25:50,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172017770] [2022-07-12 10:25:50,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:50,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:25:50,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:50,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:25:50,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:25:50,847 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-12 10:25:50,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 322 transitions, 821 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:50,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:50,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-12 10:25:50,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:52,025 INFO L129 PetriNetUnfolder]: 1207/10397 cut-off events. [2022-07-12 10:25:52,025 INFO L130 PetriNetUnfolder]: For 1711/1784 co-relation queries the response was YES. [2022-07-12 10:25:52,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14020 conditions, 10397 events. 1207/10397 cut-off events. For 1711/1784 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 128901 event pairs, 428 based on Foata normal form. 30/9712 useless extension candidates. Maximal degree in co-relation 13998. Up to 935 conditions per place. [2022-07-12 10:25:52,088 INFO L132 encePairwiseOnDemand]: 327/332 looper letters, 46 selfloop transitions, 4 changer transitions 0/339 dead transitions. [2022-07-12 10:25:52,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 339 transitions, 977 flow [2022-07-12 10:25:52,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:25:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:25:52,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1218 transitions. [2022-07-12 10:25:52,091 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9171686746987951 [2022-07-12 10:25:52,091 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1218 transitions. [2022-07-12 10:25:52,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1218 transitions. [2022-07-12 10:25:52,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:52,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1218 transitions. [2022-07-12 10:25:52,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 304.5) internal successors, (1218), 4 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:52,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:52,107 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:52,107 INFO L186 Difference]: Start difference. First operand has 320 places, 322 transitions, 821 flow. Second operand 4 states and 1218 transitions. [2022-07-12 10:25:52,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 339 transitions, 977 flow [2022-07-12 10:25:52,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 339 transitions, 977 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:25:52,118 INFO L242 Difference]: Finished difference. Result has 325 places, 324 transitions, 853 flow [2022-07-12 10:25:52,118 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=853, PETRI_PLACES=325, PETRI_TRANSITIONS=324} [2022-07-12 10:25:52,120 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 31 predicate places. [2022-07-12 10:25:52,120 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 324 transitions, 853 flow [2022-07-12 10:25:52,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:52,120 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:52,120 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:52,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:25:52,121 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:25:52,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:52,121 INFO L85 PathProgramCache]: Analyzing trace with hash 674576607, now seen corresponding path program 1 times [2022-07-12 10:25:52,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:52,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464361046] [2022-07-12 10:25:52,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:52,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:52,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:52,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464361046] [2022-07-12 10:25:52,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464361046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:52,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:52,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:52,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091122825] [2022-07-12 10:25:52,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:52,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:52,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:52,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:52,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:52,265 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-12 10:25:52,266 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 324 transitions, 853 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:52,266 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:52,266 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-12 10:25:52,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:53,549 INFO L129 PetriNetUnfolder]: 1360/11666 cut-off events. [2022-07-12 10:25:53,550 INFO L130 PetriNetUnfolder]: For 4082/4186 co-relation queries the response was YES. [2022-07-12 10:25:53,604 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16522 conditions, 11666 events. 1360/11666 cut-off events. For 4082/4186 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 152189 event pairs, 722 based on Foata normal form. 30/10864 useless extension candidates. Maximal degree in co-relation 16497. Up to 894 conditions per place. [2022-07-12 10:25:53,634 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 68 selfloop transitions, 7 changer transitions 0/364 dead transitions. [2022-07-12 10:25:53,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 364 transitions, 1176 flow [2022-07-12 10:25:53,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:53,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1528 transitions. [2022-07-12 10:25:53,638 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9204819277108434 [2022-07-12 10:25:53,638 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1528 transitions. [2022-07-12 10:25:53,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1528 transitions. [2022-07-12 10:25:53,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:53,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1528 transitions. [2022-07-12 10:25:53,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.6) internal successors, (1528), 5 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:53,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:53,644 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:53,644 INFO L186 Difference]: Start difference. First operand has 325 places, 324 transitions, 853 flow. Second operand 5 states and 1528 transitions. [2022-07-12 10:25:53,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 364 transitions, 1176 flow [2022-07-12 10:25:53,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 364 transitions, 1169 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:53,665 INFO L242 Difference]: Finished difference. Result has 330 places, 328 transitions, 908 flow [2022-07-12 10:25:53,666 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=908, PETRI_PLACES=330, PETRI_TRANSITIONS=328} [2022-07-12 10:25:53,667 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 36 predicate places. [2022-07-12 10:25:53,667 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 328 transitions, 908 flow [2022-07-12 10:25:53,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:53,667 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:53,668 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:53,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:25:53,668 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 1 more)] === [2022-07-12 10:25:53,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:53,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1582113963, now seen corresponding path program 2 times [2022-07-12 10:25:53,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:53,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862058541] [2022-07-12 10:25:53,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:53,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:53,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:53,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862058541] [2022-07-12 10:25:53,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862058541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:53,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:53,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:25:53,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612761234] [2022-07-12 10:25:53,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:53,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:25:53,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:53,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:25:53,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:25:53,738 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-12 10:25:53,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 328 transitions, 908 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:53,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:53,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-12 10:25:53,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:55,158 INFO L129 PetriNetUnfolder]: 1337/12893 cut-off events. [2022-07-12 10:25:55,158 INFO L130 PetriNetUnfolder]: For 5218/5447 co-relation queries the response was YES. [2022-07-12 10:25:55,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18823 conditions, 12893 events. 1337/12893 cut-off events. For 5218/5447 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 175124 event pairs, 650 based on Foata normal form. 35/12057 useless extension candidates. Maximal degree in co-relation 18796. Up to 761 conditions per place. [2022-07-12 10:25:55,237 INFO L132 encePairwiseOnDemand]: 322/332 looper letters, 84 selfloop transitions, 19 changer transitions 0/392 dead transitions. [2022-07-12 10:25:55,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 392 transitions, 1422 flow [2022-07-12 10:25:55,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:25:55,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:25:55,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2144 transitions. [2022-07-12 10:25:55,241 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9225473321858864 [2022-07-12 10:25:55,241 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2144 transitions. [2022-07-12 10:25:55,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2144 transitions. [2022-07-12 10:25:55,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:55,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2144 transitions. [2022-07-12 10:25:55,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 306.2857142857143) internal successors, (2144), 7 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:55,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:55,248 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:55,249 INFO L186 Difference]: Start difference. First operand has 330 places, 328 transitions, 908 flow. Second operand 7 states and 2144 transitions. [2022-07-12 10:25:55,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 392 transitions, 1422 flow [2022-07-12 10:25:55,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 392 transitions, 1412 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:55,267 INFO L242 Difference]: Finished difference. Result has 338 places, 344 transitions, 1095 flow [2022-07-12 10:25:55,267 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1095, PETRI_PLACES=338, PETRI_TRANSITIONS=344} [2022-07-12 10:25:55,268 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 44 predicate places. [2022-07-12 10:25:55,268 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 344 transitions, 1095 flow [2022-07-12 10:25:55,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:55,269 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:55,269 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:55,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:25:55,269 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 1 more)] === [2022-07-12 10:25:55,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:55,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1986999437, now seen corresponding path program 1 times [2022-07-12 10:25:55,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:55,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237135543] [2022-07-12 10:25:55,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:55,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:55,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:55,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:55,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237135543] [2022-07-12 10:25:55,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237135543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:55,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:55,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:25:55,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581681081] [2022-07-12 10:25:55,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:55,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:25:55,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:55,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:25:55,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:25:55,348 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 332 [2022-07-12 10:25:55,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 344 transitions, 1095 flow. Second operand has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:55,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:55,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 332 [2022-07-12 10:25:55,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:56,234 INFO L129 PetriNetUnfolder]: 247/6202 cut-off events. [2022-07-12 10:25:56,234 INFO L130 PetriNetUnfolder]: For 2650/3539 co-relation queries the response was YES. [2022-07-12 10:25:56,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9749 conditions, 6202 events. 247/6202 cut-off events. For 2650/3539 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 77752 event pairs, 41 based on Foata normal form. 224/5974 useless extension candidates. Maximal degree in co-relation 9718. Up to 1296 conditions per place. [2022-07-12 10:25:56,265 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 55 selfloop transitions, 4 changer transitions 9/359 dead transitions. [2022-07-12 10:25:56,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 359 transitions, 1268 flow [2022-07-12 10:25:56,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:25:56,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:25:56,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1946 transitions. [2022-07-12 10:25:56,268 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8373493975903614 [2022-07-12 10:25:56,269 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1946 transitions. [2022-07-12 10:25:56,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1946 transitions. [2022-07-12 10:25:56,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:56,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1946 transitions. [2022-07-12 10:25:56,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 278.0) internal successors, (1946), 7 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:56,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:56,275 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:56,276 INFO L186 Difference]: Start difference. First operand has 338 places, 344 transitions, 1095 flow. Second operand 7 states and 1946 transitions. [2022-07-12 10:25:56,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 359 transitions, 1268 flow [2022-07-12 10:25:56,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 359 transitions, 1264 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-07-12 10:25:56,286 INFO L242 Difference]: Finished difference. Result has 349 places, 342 transitions, 1084 flow [2022-07-12 10:25:56,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1084, PETRI_PLACES=349, PETRI_TRANSITIONS=342} [2022-07-12 10:25:56,288 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 55 predicate places. [2022-07-12 10:25:56,288 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 342 transitions, 1084 flow [2022-07-12 10:25:56,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:56,288 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:56,289 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:56,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:25:56,289 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 1 more)] === [2022-07-12 10:25:56,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:56,289 INFO L85 PathProgramCache]: Analyzing trace with hash 116317659, now seen corresponding path program 3 times [2022-07-12 10:25:56,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:56,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172998948] [2022-07-12 10:25:56,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:56,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:56,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:56,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172998948] [2022-07-12 10:25:56,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172998948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:56,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:56,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:25:56,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169632988] [2022-07-12 10:25:56,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:56,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:25:56,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:56,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:25:56,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:25:56,328 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-12 10:25:56,329 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 342 transitions, 1084 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:56,329 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:56,329 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-12 10:25:56,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:57,848 INFO L129 PetriNetUnfolder]: 1309/12730 cut-off events. [2022-07-12 10:25:57,849 INFO L130 PetriNetUnfolder]: For 9253/9450 co-relation queries the response was YES. [2022-07-12 10:25:57,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20163 conditions, 12730 events. 1309/12730 cut-off events. For 9253/9450 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 173461 event pairs, 625 based on Foata normal form. 41/11883 useless extension candidates. Maximal degree in co-relation 20126. Up to 1424 conditions per place. [2022-07-12 10:25:57,942 INFO L132 encePairwiseOnDemand]: 323/332 looper letters, 69 selfloop transitions, 15 changer transitions 2/378 dead transitions. [2022-07-12 10:25:57,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 378 transitions, 1442 flow [2022-07-12 10:25:57,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:25:57,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:25:57,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1534 transitions. [2022-07-12 10:25:57,946 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9240963855421687 [2022-07-12 10:25:57,946 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1534 transitions. [2022-07-12 10:25:57,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1534 transitions. [2022-07-12 10:25:57,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:57,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1534 transitions. [2022-07-12 10:25:57,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.8) internal successors, (1534), 5 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:57,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:57,952 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:57,952 INFO L186 Difference]: Start difference. First operand has 349 places, 342 transitions, 1084 flow. Second operand 5 states and 1534 transitions. [2022-07-12 10:25:57,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 378 transitions, 1442 flow [2022-07-12 10:25:57,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 378 transitions, 1435 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-07-12 10:25:57,997 INFO L242 Difference]: Finished difference. Result has 352 places, 349 transitions, 1213 flow [2022-07-12 10:25:57,998 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1213, PETRI_PLACES=352, PETRI_TRANSITIONS=349} [2022-07-12 10:25:57,999 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 58 predicate places. [2022-07-12 10:25:57,999 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 349 transitions, 1213 flow [2022-07-12 10:25:58,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:58,000 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:58,000 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:58,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:25:58,000 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 1 more)] === [2022-07-12 10:25:58,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:58,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1840381927, now seen corresponding path program 4 times [2022-07-12 10:25:58,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:58,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766514967] [2022-07-12 10:25:58,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:58,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:58,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:58,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766514967] [2022-07-12 10:25:58,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766514967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:58,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:58,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:25:58,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816508683] [2022-07-12 10:25:58,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:58,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:25:58,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:58,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:25:58,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:25:58,055 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-12 10:25:58,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 349 transitions, 1213 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:58,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:58,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-12 10:25:58,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:59,648 INFO L129 PetriNetUnfolder]: 1303/12374 cut-off events. [2022-07-12 10:25:59,648 INFO L130 PetriNetUnfolder]: For 12352/12589 co-relation queries the response was YES. [2022-07-12 10:25:59,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20233 conditions, 12374 events. 1303/12374 cut-off events. For 12352/12589 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 166694 event pairs, 681 based on Foata normal form. 17/11480 useless extension candidates. Maximal degree in co-relation 20195. Up to 1765 conditions per place. [2022-07-12 10:25:59,772 INFO L132 encePairwiseOnDemand]: 327/332 looper letters, 65 selfloop transitions, 8 changer transitions 0/365 dead transitions. [2022-07-12 10:25:59,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 365 transitions, 1438 flow [2022-07-12 10:25:59,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:25:59,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:25:59,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1220 transitions. [2022-07-12 10:25:59,777 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9186746987951807 [2022-07-12 10:25:59,777 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1220 transitions. [2022-07-12 10:25:59,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1220 transitions. [2022-07-12 10:25:59,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:59,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1220 transitions. [2022-07-12 10:25:59,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:59,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:59,782 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:59,782 INFO L186 Difference]: Start difference. First operand has 352 places, 349 transitions, 1213 flow. Second operand 4 states and 1220 transitions. [2022-07-12 10:25:59,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 365 transitions, 1438 flow [2022-07-12 10:25:59,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 365 transitions, 1432 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-07-12 10:25:59,845 INFO L242 Difference]: Finished difference. Result has 357 places, 351 transitions, 1269 flow [2022-07-12 10:25:59,845 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1269, PETRI_PLACES=357, PETRI_TRANSITIONS=351} [2022-07-12 10:25:59,846 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 63 predicate places. [2022-07-12 10:25:59,846 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 351 transitions, 1269 flow [2022-07-12 10:25:59,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:59,846 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:59,846 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:59,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:25:59,847 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 1 more)] === [2022-07-12 10:25:59,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:59,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2029576223, now seen corresponding path program 1 times [2022-07-12 10:25:59,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:59,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918715053] [2022-07-12 10:25:59,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:59,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:59,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:59,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918715053] [2022-07-12 10:25:59,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918715053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:59,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:59,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:25:59,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957405429] [2022-07-12 10:25:59,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:59,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:25:59,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:59,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:25:59,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:25:59,942 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 332 [2022-07-12 10:25:59,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 351 transitions, 1269 flow. Second operand has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:59,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:59,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 332 [2022-07-12 10:25:59,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:03,688 INFO L129 PetriNetUnfolder]: 5882/23611 cut-off events. [2022-07-12 10:26:03,688 INFO L130 PetriNetUnfolder]: For 19071/20069 co-relation queries the response was YES. [2022-07-12 10:26:03,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44401 conditions, 23611 events. 5882/23611 cut-off events. For 19071/20069 co-relation queries the response was YES. Maximal size of possible extension queue 1311. Compared 327754 event pairs, 3180 based on Foata normal form. 253/22300 useless extension candidates. Maximal degree in co-relation 44360. Up to 8090 conditions per place. [2022-07-12 10:26:03,836 INFO L132 encePairwiseOnDemand]: 318/332 looper letters, 72 selfloop transitions, 30 changer transitions 6/400 dead transitions. [2022-07-12 10:26:03,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 400 transitions, 1738 flow [2022-07-12 10:26:03,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:26:03,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:26:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1915 transitions. [2022-07-12 10:26:03,840 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8240103270223752 [2022-07-12 10:26:03,840 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1915 transitions. [2022-07-12 10:26:03,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1915 transitions. [2022-07-12 10:26:03,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:03,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1915 transitions. [2022-07-12 10:26:03,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 273.57142857142856) internal successors, (1915), 7 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:03,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:03,847 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:03,847 INFO L186 Difference]: Start difference. First operand has 357 places, 351 transitions, 1269 flow. Second operand 7 states and 1915 transitions. [2022-07-12 10:26:03,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 400 transitions, 1738 flow [2022-07-12 10:26:03,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 400 transitions, 1728 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-12 10:26:03,903 INFO L242 Difference]: Finished difference. Result has 367 places, 378 transitions, 1571 flow [2022-07-12 10:26:03,904 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1571, PETRI_PLACES=367, PETRI_TRANSITIONS=378} [2022-07-12 10:26:03,905 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 73 predicate places. [2022-07-12 10:26:03,905 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 378 transitions, 1571 flow [2022-07-12 10:26:03,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:03,905 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:03,906 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:03,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:26:03,906 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:03,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:03,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1458383197, now seen corresponding path program 1 times [2022-07-12 10:26:03,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:03,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108135296] [2022-07-12 10:26:03,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:03,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:03,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:03,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:03,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108135296] [2022-07-12 10:26:03,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108135296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:03,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:03,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:26:03,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666255076] [2022-07-12 10:26:03,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:03,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:26:03,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:03,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:26:03,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:26:03,982 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 332 [2022-07-12 10:26:03,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 378 transitions, 1571 flow. Second operand has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:03,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:03,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 332 [2022-07-12 10:26:03,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:07,624 INFO L129 PetriNetUnfolder]: 5880/23513 cut-off events. [2022-07-12 10:26:07,624 INFO L130 PetriNetUnfolder]: For 37370/41765 co-relation queries the response was YES. [2022-07-12 10:26:07,766 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55970 conditions, 23513 events. 5880/23513 cut-off events. For 37370/41765 co-relation queries the response was YES. Maximal size of possible extension queue 1311. Compared 326177 event pairs, 3039 based on Foata normal form. 674/22660 useless extension candidates. Maximal degree in co-relation 55924. Up to 6779 conditions per place. [2022-07-12 10:26:07,802 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 109 selfloop transitions, 6 changer transitions 17/424 dead transitions. [2022-07-12 10:26:07,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 424 transitions, 2230 flow [2022-07-12 10:26:07,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:26:07,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-12 10:26:07,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2176 transitions. [2022-07-12 10:26:07,805 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8192771084337349 [2022-07-12 10:26:07,806 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2176 transitions. [2022-07-12 10:26:07,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2176 transitions. [2022-07-12 10:26:07,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:07,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2176 transitions. [2022-07-12 10:26:07,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:07,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:07,812 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:07,812 INFO L186 Difference]: Start difference. First operand has 367 places, 378 transitions, 1571 flow. Second operand 8 states and 2176 transitions. [2022-07-12 10:26:07,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 424 transitions, 2230 flow [2022-07-12 10:26:08,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 424 transitions, 2208 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-07-12 10:26:08,057 INFO L242 Difference]: Finished difference. Result has 373 places, 378 transitions, 1571 flow [2022-07-12 10:26:08,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1571, PETRI_PLACES=373, PETRI_TRANSITIONS=378} [2022-07-12 10:26:08,058 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 79 predicate places. [2022-07-12 10:26:08,058 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 378 transitions, 1571 flow [2022-07-12 10:26:08,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:08,058 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:08,059 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:08,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:26:08,059 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:08,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:08,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1799972975, now seen corresponding path program 1 times [2022-07-12 10:26:08,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:08,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054810953] [2022-07-12 10:26:08,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:08,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:08,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:08,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:08,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054810953] [2022-07-12 10:26:08,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054810953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:08,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:08,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:26:08,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19616944] [2022-07-12 10:26:08,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:08,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:26:08,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:08,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:26:08,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:26:08,152 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 332 [2022-07-12 10:26:08,153 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 378 transitions, 1571 flow. Second operand has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:08,153 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:08,153 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 332 [2022-07-12 10:26:08,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:10,185 INFO L129 PetriNetUnfolder]: 2421/14869 cut-off events. [2022-07-12 10:26:10,185 INFO L130 PetriNetUnfolder]: For 18064/20869 co-relation queries the response was YES. [2022-07-12 10:26:10,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31345 conditions, 14869 events. 2421/14869 cut-off events. For 18064/20869 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 210130 event pairs, 860 based on Foata normal form. 320/14213 useless extension candidates. Maximal degree in co-relation 31297. Up to 3086 conditions per place. [2022-07-12 10:26:10,403 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 57 selfloop transitions, 5 changer transitions 12/393 dead transitions. [2022-07-12 10:26:10,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 393 transitions, 1762 flow [2022-07-12 10:26:10,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:26:10,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:26:10,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1945 transitions. [2022-07-12 10:26:10,406 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8369191049913941 [2022-07-12 10:26:10,406 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1945 transitions. [2022-07-12 10:26:10,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1945 transitions. [2022-07-12 10:26:10,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:10,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1945 transitions. [2022-07-12 10:26:10,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 277.85714285714283) internal successors, (1945), 7 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:10,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:10,412 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:10,412 INFO L186 Difference]: Start difference. First operand has 373 places, 378 transitions, 1571 flow. Second operand 7 states and 1945 transitions. [2022-07-12 10:26:10,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 393 transitions, 1762 flow [2022-07-12 10:26:10,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 393 transitions, 1751 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-07-12 10:26:10,498 INFO L242 Difference]: Finished difference. Result has 378 places, 374 transitions, 1519 flow [2022-07-12 10:26:10,498 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1519, PETRI_PLACES=378, PETRI_TRANSITIONS=374} [2022-07-12 10:26:10,498 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 84 predicate places. [2022-07-12 10:26:10,500 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 374 transitions, 1519 flow [2022-07-12 10:26:10,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:10,501 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:10,501 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:10,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 10:26:10,501 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:10,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:10,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1137660929, now seen corresponding path program 5 times [2022-07-12 10:26:10,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:10,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591384275] [2022-07-12 10:26:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:10,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:10,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:10,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591384275] [2022-07-12 10:26:10,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591384275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:10,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:10,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:26:10,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692262193] [2022-07-12 10:26:10,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:10,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:26:10,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:10,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:26:10,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:26:10,538 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-12 10:26:10,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 374 transitions, 1519 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:10,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:10,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-12 10:26:10,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:13,275 INFO L129 PetriNetUnfolder]: 2686/19729 cut-off events. [2022-07-12 10:26:13,275 INFO L130 PetriNetUnfolder]: For 24754/26327 co-relation queries the response was YES. [2022-07-12 10:26:13,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39721 conditions, 19729 events. 2686/19729 cut-off events. For 24754/26327 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 293003 event pairs, 963 based on Foata normal form. 218/18488 useless extension candidates. Maximal degree in co-relation 39670. Up to 1799 conditions per place. [2022-07-12 10:26:13,448 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 64 selfloop transitions, 21 changer transitions 17/421 dead transitions. [2022-07-12 10:26:13,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 421 transitions, 2082 flow [2022-07-12 10:26:13,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:26:13,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:26:13,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1535 transitions. [2022-07-12 10:26:13,450 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9246987951807228 [2022-07-12 10:26:13,450 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1535 transitions. [2022-07-12 10:26:13,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1535 transitions. [2022-07-12 10:26:13,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:13,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1535 transitions. [2022-07-12 10:26:13,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 307.0) internal successors, (1535), 5 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:13,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:13,455 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:13,456 INFO L186 Difference]: Start difference. First operand has 378 places, 374 transitions, 1519 flow. Second operand 5 states and 1535 transitions. [2022-07-12 10:26:13,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 421 transitions, 2082 flow [2022-07-12 10:26:13,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 421 transitions, 2071 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-07-12 10:26:13,667 INFO L242 Difference]: Finished difference. Result has 380 places, 379 transitions, 1691 flow [2022-07-12 10:26:13,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1691, PETRI_PLACES=380, PETRI_TRANSITIONS=379} [2022-07-12 10:26:13,668 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 86 predicate places. [2022-07-12 10:26:13,668 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 379 transitions, 1691 flow [2022-07-12 10:26:13,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:13,668 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:13,669 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:13,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 10:26:13,669 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:13,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:13,669 INFO L85 PathProgramCache]: Analyzing trace with hash 604689565, now seen corresponding path program 6 times [2022-07-12 10:26:13,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:13,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213619722] [2022-07-12 10:26:13,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:13,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:13,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:13,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213619722] [2022-07-12 10:26:13,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213619722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:13,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:13,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:26:13,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051194537] [2022-07-12 10:26:13,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:13,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:26:13,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:13,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:26:13,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:26:13,710 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-12 10:26:13,711 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 379 transitions, 1691 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:13,711 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:13,711 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-12 10:26:13,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:16,275 INFO L129 PetriNetUnfolder]: 2499/17853 cut-off events. [2022-07-12 10:26:16,275 INFO L130 PetriNetUnfolder]: For 33042/35138 co-relation queries the response was YES. [2022-07-12 10:26:16,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37976 conditions, 17853 events. 2499/17853 cut-off events. For 33042/35138 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 256521 event pairs, 648 based on Foata normal form. 267/16800 useless extension candidates. Maximal degree in co-relation 37925. Up to 1934 conditions per place. [2022-07-12 10:26:16,438 INFO L132 encePairwiseOnDemand]: 323/332 looper letters, 50 selfloop transitions, 22 changer transitions 34/421 dead transitions. [2022-07-12 10:26:16,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 421 transitions, 2253 flow [2022-07-12 10:26:16,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:26:16,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:26:16,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1534 transitions. [2022-07-12 10:26:16,440 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9240963855421687 [2022-07-12 10:26:16,440 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1534 transitions. [2022-07-12 10:26:16,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1534 transitions. [2022-07-12 10:26:16,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:16,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1534 transitions. [2022-07-12 10:26:16,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.8) internal successors, (1534), 5 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:16,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:16,443 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:16,443 INFO L186 Difference]: Start difference. First operand has 380 places, 379 transitions, 1691 flow. Second operand 5 states and 1534 transitions. [2022-07-12 10:26:16,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 421 transitions, 2253 flow [2022-07-12 10:26:16,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 421 transitions, 2188 flow, removed 22 selfloop flow, removed 1 redundant places. [2022-07-12 10:26:16,605 INFO L242 Difference]: Finished difference. Result has 386 places, 371 transitions, 1678 flow [2022-07-12 10:26:16,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1678, PETRI_PLACES=386, PETRI_TRANSITIONS=371} [2022-07-12 10:26:16,606 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 92 predicate places. [2022-07-12 10:26:16,606 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 371 transitions, 1678 flow [2022-07-12 10:26:16,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:16,607 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:16,607 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:16,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 10:26:16,607 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:16,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:16,607 INFO L85 PathProgramCache]: Analyzing trace with hash -521518423, now seen corresponding path program 1 times [2022-07-12 10:26:16,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:16,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926211351] [2022-07-12 10:26:16,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:16,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:16,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:26:16,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:16,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926211351] [2022-07-12 10:26:16,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926211351] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:16,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:16,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:26:16,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340315889] [2022-07-12 10:26:16,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:16,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:26:16,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:16,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:26:16,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:26:16,646 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-12 10:26:16,647 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 371 transitions, 1678 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:16,647 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:16,647 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-12 10:26:16,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:18,966 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([929] thread2EXIT-->L124-2: Formula: (and (= 0 v_thread2Thread1of1ForFork2_thidvar2_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem38#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread2Thread1of1ForFork2_thidvar0_4) (= 0 v_thread2Thread1of1ForFork2_thidvar1_4)) InVars {thread2Thread1of1ForFork2_thidvar2=v_thread2Thread1of1ForFork2_thidvar2_4, thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_4, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} OutVars{thread2Thread1of1ForFork2_thidvar2=v_thread2Thread1of1ForFork2_thidvar2_4, thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_4, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} AuxVars[] AssignedVars[][371], [Black: 496#(= |thread3Thread1of1ForFork0_#t~ite21| 1), 79#L124-2true, 473#true, Black: 516#(= (+ (- 1) ~res3~0) 0), Black: 365#(and (<= ~n1~0 0) (<= ~n1~0 ~n2~0)), Black: 381#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 361#(<= ~res1~0 0), Black: 391#(and (<= ~n1~0 0) (<= ~n1~0 ~n2~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 389#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (<= ~n1~0 ~n2~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 385#(and (or (<= ~n1~0 ~n2~0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (or (<= ~n1~0 ~n2~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 373#(and (<= ~n1~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n1~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~res1~0 0)), Black: 383#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (or (<= ~n1~0 ~n2~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 367#(and (<= ~n1~0 0) (<= ~n1~0 ~n2~0) (<= ~res1~0 0)), Black: 379#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (<= ~res1~0 0)), Black: 537#(and (<= (+ ~res2~0 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite14| 1) 0)), Black: 533#(<= (+ ~res2~0 1) 0), Black: 414#(<= (+ ~count3~0 1) ~count1~0), Black: 532#(<= (+ |thread2Thread1of1ForFork2_#t~ite14| 1) 0), Black: 416#(and (<= ~count3~0 ~count2~0) (<= (+ ~count3~0 1) ~count1~0)), Black: 551#(<= ~count3~0 ~count2~0), Black: 426#(and (<= ~count1~0 ~count3~0) (<= (+ ~count2~0 1) ~count3~0)), Black: 552#(<= ~count1~0 ~count2~0), Black: 549#true, Black: 433#(<= (+ ~count1~0 1) ~count2~0), Black: 560#true, Black: 436#(and (<= (+ ~count1~0 1) ~count2~0) (<= (+ ~count1~0 1) ~count3~0)), Black: 562#(<= ~count1~0 ~count3~0), Black: 563#(<= ~count1~0 ~count2~0), Black: 316#(= thread2Thread1of1ForFork2_~stop~1 0), 89#L89true, 441#true, Black: 449#(and (<= (+ ~count1~0 1) ~count2~0) (<= (+ ~count3~0 1) ~count2~0)), Black: 445#(<= (+ ~count3~0 1) ~count2~0), Black: 444#(<= (+ ~count1~0 1) ~count2~0), Black: 447#(and (not (= ~count2~0 ~count1~0)) (<= (+ ~count3~0 1) ~count2~0)), Black: 326#(= thread1Thread1of1ForFork1_~stop~0 0), 494#true, 574#(<= ~count2~0 ~count1~0), Black: 458#(<= (+ ~res1~0 1) 0), Black: 462#(and (<= (+ ~res1~0 1) 0) (<= (+ |thread1Thread1of1ForFork1_#t~ite7| 1) 0)), Black: 457#(<= (+ |thread1Thread1of1ForFork1_#t~ite7| 1) 0), Black: 337#(and (<= (+ ~res2~0 ~n1~0) (+ ~res3~0 ~n2~0)) (<= ~n1~0 (+ ~res3~0 ~n3~0))), 423#(<= ~count1~0 ~count3~0), Black: 331#(<= ~n1~0 (+ ~res3~0 ~n3~0)), Black: 475#(<= (+ ~count2~0 1) ~count1~0), Black: 478#(and (<= (+ ~count2~0 1) ~count1~0) (<= (+ ~count3~0 1) ~count1~0)), Black: 476#(<= (+ ~count3~0 1) ~count1~0), 565#(and (<= ~count1~0 ~count3~0) (<= ~count1~0 ~count2~0)), 554#(and (<= ~count3~0 ~count2~0) (<= ~count1~0 ~count2~0)), Black: 487#(<= (+ ~count2~0 1) ~count1~0), 311#true, 413#(<= ~count3~0 ~count2~0), Black: 497#(or (< 0 ~res3~0) (<= ~res2~0 0) (<= ~res1~0 0)), Black: 501#(and (or (< 0 ~res3~0) (<= ~res2~0 0) (<= ~res1~0 0)) (= |thread3Thread1of1ForFork0_#t~ite21| 1))]) [2022-07-12 10:26:18,966 INFO L384 tUnfolder$Statistics]: this new event has 202 ancestors and is cut-off event [2022-07-12 10:26:18,966 INFO L387 tUnfolder$Statistics]: existing Event has 200 ancestors and is cut-off event [2022-07-12 10:26:18,966 INFO L387 tUnfolder$Statistics]: existing Event has 200 ancestors and is cut-off event [2022-07-12 10:26:18,966 INFO L387 tUnfolder$Statistics]: existing Event has 201 ancestors and is cut-off event [2022-07-12 10:26:18,974 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([929] thread2EXIT-->L124-2: Formula: (and (= 0 v_thread2Thread1of1ForFork2_thidvar2_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem38#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread2Thread1of1ForFork2_thidvar0_4) (= 0 v_thread2Thread1of1ForFork2_thidvar1_4)) InVars {thread2Thread1of1ForFork2_thidvar2=v_thread2Thread1of1ForFork2_thidvar2_4, thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_4, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} OutVars{thread2Thread1of1ForFork2_thidvar2=v_thread2Thread1of1ForFork2_thidvar2_4, thread2Thread1of1ForFork2_thidvar1=v_thread2Thread1of1ForFork2_thidvar1_4, thread2Thread1of1ForFork2_thidvar0=v_thread2Thread1of1ForFork2_thidvar0_4, ULTIMATE.start_main_#t~mem38#1=|v_ULTIMATE.start_main_#t~mem38#1_5|} AuxVars[] AssignedVars[][371], [Black: 496#(= |thread3Thread1of1ForFork0_#t~ite21| 1), 79#L124-2true, 473#true, Black: 516#(= (+ (- 1) ~res3~0) 0), Black: 365#(and (<= ~n1~0 0) (<= ~n1~0 ~n2~0)), Black: 381#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 361#(<= ~res1~0 0), Black: 391#(and (<= ~n1~0 0) (<= ~n1~0 ~n2~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 389#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (<= ~n1~0 ~n2~0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 385#(and (or (<= ~n1~0 ~n2~0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (or (<= ~n1~0 ~n2~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 373#(and (<= ~n1~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n1~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 0) (<= ~res1~0 0)), Black: 383#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (or (<= ~n1~0 ~n2~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~n1~0) ~n2~0) (<= ~res1~0 0)), Black: 367#(and (<= ~n1~0 0) (<= ~n1~0 ~n2~0) (<= ~res1~0 0)), Black: 379#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~n1~0) ~n2~0) (<= ~n1~0 0) (<= ~res1~0 0)), Black: 537#(and (<= (+ ~res2~0 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite14| 1) 0)), Black: 533#(<= (+ ~res2~0 1) 0), Black: 414#(<= (+ ~count3~0 1) ~count1~0), Black: 532#(<= (+ |thread2Thread1of1ForFork2_#t~ite14| 1) 0), Black: 416#(and (<= ~count3~0 ~count2~0) (<= (+ ~count3~0 1) ~count1~0)), Black: 551#(<= ~count3~0 ~count2~0), Black: 426#(and (<= ~count1~0 ~count3~0) (<= (+ ~count2~0 1) ~count3~0)), Black: 552#(<= ~count1~0 ~count2~0), Black: 549#true, Black: 433#(<= (+ ~count1~0 1) ~count2~0), Black: 436#(and (<= (+ ~count1~0 1) ~count2~0) (<= (+ ~count1~0 1) ~count3~0)), Black: 560#true, Black: 562#(<= ~count1~0 ~count3~0), Black: 563#(<= ~count1~0 ~count2~0), Black: 316#(= thread2Thread1of1ForFork2_~stop~1 0), 441#true, Black: 449#(and (<= (+ ~count1~0 1) ~count2~0) (<= (+ ~count3~0 1) ~count2~0)), Black: 445#(<= (+ ~count3~0 1) ~count2~0), Black: 444#(<= (+ ~count1~0 1) ~count2~0), Black: 447#(and (not (= ~count2~0 ~count1~0)) (<= (+ ~count3~0 1) ~count2~0)), Black: 326#(= thread1Thread1of1ForFork1_~stop~0 0), 494#true, 87#L100-3true, 574#(<= ~count2~0 ~count1~0), Black: 458#(<= (+ ~res1~0 1) 0), Black: 462#(and (<= (+ ~res1~0 1) 0) (<= (+ |thread1Thread1of1ForFork1_#t~ite7| 1) 0)), Black: 457#(<= (+ |thread1Thread1of1ForFork1_#t~ite7| 1) 0), Black: 337#(and (<= (+ ~res2~0 ~n1~0) (+ ~res3~0 ~n2~0)) (<= ~n1~0 (+ ~res3~0 ~n3~0))), 423#(<= ~count1~0 ~count3~0), Black: 331#(<= ~n1~0 (+ ~res3~0 ~n3~0)), Black: 475#(<= (+ ~count2~0 1) ~count1~0), Black: 478#(and (<= (+ ~count2~0 1) ~count1~0) (<= (+ ~count3~0 1) ~count1~0)), 565#(and (<= ~count1~0 ~count3~0) (<= ~count1~0 ~count2~0)), Black: 476#(<= (+ ~count3~0 1) ~count1~0), Black: 487#(<= (+ ~count2~0 1) ~count1~0), 554#(and (<= ~count3~0 ~count2~0) (<= ~count1~0 ~count2~0)), 311#true, 413#(<= ~count3~0 ~count2~0), Black: 497#(or (< 0 ~res3~0) (<= ~res2~0 0) (<= ~res1~0 0)), Black: 501#(and (or (< 0 ~res3~0) (<= ~res2~0 0) (<= ~res1~0 0)) (= |thread3Thread1of1ForFork0_#t~ite21| 1))]) [2022-07-12 10:26:18,974 INFO L384 tUnfolder$Statistics]: this new event has 201 ancestors and is cut-off event [2022-07-12 10:26:18,975 INFO L387 tUnfolder$Statistics]: existing Event has 203 ancestors and is cut-off event [2022-07-12 10:26:18,975 INFO L387 tUnfolder$Statistics]: existing Event has 202 ancestors and is cut-off event [2022-07-12 10:26:18,975 INFO L387 tUnfolder$Statistics]: existing Event has 201 ancestors and is cut-off event [2022-07-12 10:26:19,047 INFO L129 PetriNetUnfolder]: 2222/16157 cut-off events. [2022-07-12 10:26:19,047 INFO L130 PetriNetUnfolder]: For 29115/30712 co-relation queries the response was YES. [2022-07-12 10:26:19,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33489 conditions, 16157 events. 2222/16157 cut-off events. For 29115/30712 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 224018 event pairs, 644 based on Foata normal form. 188/15121 useless extension candidates. Maximal degree in co-relation 33435. Up to 1732 conditions per place. [2022-07-12 10:26:19,170 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 59 selfloop transitions, 14 changer transitions 8/396 dead transitions. [2022-07-12 10:26:19,170 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 396 transitions, 1983 flow [2022-07-12 10:26:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:26:19,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:26:19,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1527 transitions. [2022-07-12 10:26:19,171 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9198795180722892 [2022-07-12 10:26:19,171 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1527 transitions. [2022-07-12 10:26:19,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1527 transitions. [2022-07-12 10:26:19,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:19,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1527 transitions. [2022-07-12 10:26:19,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.4) internal successors, (1527), 5 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) [2022-07-12 10:26:19,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:19,174 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:19,174 INFO L186 Difference]: Start difference. First operand has 386 places, 371 transitions, 1678 flow. Second operand 5 states and 1527 transitions. [2022-07-12 10:26:19,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 396 transitions, 1983 flow [2022-07-12 10:26:19,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 396 transitions, 1816 flow, removed 71 selfloop flow, removed 8 redundant places. [2022-07-12 10:26:19,297 INFO L242 Difference]: Finished difference. Result has 381 places, 374 transitions, 1607 flow [2022-07-12 10:26:19,297 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1607, PETRI_PLACES=381, PETRI_TRANSITIONS=374} [2022-07-12 10:26:19,298 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 87 predicate places. [2022-07-12 10:26:19,298 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 374 transitions, 1607 flow [2022-07-12 10:26:19,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:19,298 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:19,298 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:19,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 10:26:19,298 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:19,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:19,299 INFO L85 PathProgramCache]: Analyzing trace with hash -119223153, now seen corresponding path program 2 times [2022-07-12 10:26:19,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:19,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077411156] [2022-07-12 10:26:19,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:19,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:26:19,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:19,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077411156] [2022-07-12 10:26:19,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077411156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:19,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:19,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:26:19,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225327744] [2022-07-12 10:26:19,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:19,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:26:19,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:19,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:26:19,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:26:19,335 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-07-12 10:26:19,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 374 transitions, 1607 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:19,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:19,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-07-12 10:26:19,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:21,203 INFO L129 PetriNetUnfolder]: 1906/13298 cut-off events. [2022-07-12 10:26:21,203 INFO L130 PetriNetUnfolder]: For 19732/20775 co-relation queries the response was YES. [2022-07-12 10:26:21,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27668 conditions, 13298 events. 1906/13298 cut-off events. For 19732/20775 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 181396 event pairs, 620 based on Foata normal form. 153/12440 useless extension candidates. Maximal degree in co-relation 27620. Up to 1488 conditions per place. [2022-07-12 10:26:21,318 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 58 selfloop transitions, 27 changer transitions 20/412 dead transitions. [2022-07-12 10:26:21,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 412 transitions, 2114 flow [2022-07-12 10:26:21,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:26:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-12 10:26:21,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1530 transitions. [2022-07-12 10:26:21,320 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9216867469879518 [2022-07-12 10:26:21,320 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1530 transitions. [2022-07-12 10:26:21,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1530 transitions. [2022-07-12 10:26:21,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:21,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1530 transitions. [2022-07-12 10:26:21,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.0) internal successors, (1530), 5 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:21,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:21,323 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:21,323 INFO L186 Difference]: Start difference. First operand has 381 places, 374 transitions, 1607 flow. Second operand 5 states and 1530 transitions. [2022-07-12 10:26:21,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 412 transitions, 2114 flow [2022-07-12 10:26:21,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 412 transitions, 2090 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-07-12 10:26:21,421 INFO L242 Difference]: Finished difference. Result has 387 places, 375 transitions, 1743 flow [2022-07-12 10:26:21,422 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1743, PETRI_PLACES=387, PETRI_TRANSITIONS=375} [2022-07-12 10:26:21,422 INFO L279 CegarLoopForPetriNet]: 294 programPoint places, 93 predicate places. [2022-07-12 10:26:21,422 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 375 transitions, 1743 flow [2022-07-12 10:26:21,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:21,423 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:21,423 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:21,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 10:26:21,423 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:26:21,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:21,424 INFO L85 PathProgramCache]: Analyzing trace with hash 610845763, now seen corresponding path program 1 times [2022-07-12 10:26:21,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:21,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607166543] [2022-07-12 10:26:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:21,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:26:21,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:21,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607166543] [2022-07-12 10:26:21,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607166543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:21,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:21,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:21,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121408215] [2022-07-12 10:26:21,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:21,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:21,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:21,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:21,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:21,570 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 332 [2022-07-12 10:26:21,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 375 transitions, 1743 flow. Second operand has 14 states, 14 states have (on average 235.78571428571428) internal successors, (3301), 14 states have internal predecessors, (3301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:21,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:21,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 332 [2022-07-12 10:26:21,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand