/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 22:20:40,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 22:20:40,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 22:20:40,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 22:20:40,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 22:20:40,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 22:20:40,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 22:20:40,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 22:20:40,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 22:20:40,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 22:20:40,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 22:20:40,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 22:20:40,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 22:20:40,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 22:20:40,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 22:20:40,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 22:20:40,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 22:20:40,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 22:20:40,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 22:20:40,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 22:20:40,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 22:20:40,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 22:20:40,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 22:20:40,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 22:20:40,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 22:20:40,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 22:20:40,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 22:20:40,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 22:20:40,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 22:20:40,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 22:20:40,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 22:20:40,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 22:20:40,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 22:20:40,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 22:20:40,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 22:20:40,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 22:20:40,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 22:20:40,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 22:20:40,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 22:20:40,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 22:20:40,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 22:20:40,301 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 22:20:40,327 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 22:20:40,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 22:20:40,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 22:20:40,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 22:20:40,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 22:20:40,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 22:20:40,330 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 22:20:40,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 22:20:40,330 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 22:20:40,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 22:20:40,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 22:20:40,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 22:20:40,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 22:20:40,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 22:20:40,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 22:20:40,332 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 22:20:40,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 22:20:40,332 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 22:20:40,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 22:20:40,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 22:20:40,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 22:20:40,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 22:20:40,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 22:20:40,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 22:20:40,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 22:20:40,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 22:20:40,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 22:20:40,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 22:20:40,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 22:20:40,333 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 22:20:40,333 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 22:20:40,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 22:20:40,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 22:20:40,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 22:20:40,670 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 22:20:40,671 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 22:20:40,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2022-12-12 22:20:41,700 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 22:20:41,907 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 22:20:41,907 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2022-12-12 22:20:41,913 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b881b3614/ae128f472a85466096235bf9e2fbcbdc/FLAGb37d004f7 [2022-12-12 22:20:41,927 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b881b3614/ae128f472a85466096235bf9e2fbcbdc [2022-12-12 22:20:41,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 22:20:41,930 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 22:20:41,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 22:20:41,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 22:20:41,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 22:20:41,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 10:20:41" (1/1) ... [2022-12-12 22:20:41,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1068ecdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:20:41, skipping insertion in model container [2022-12-12 22:20:41,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 10:20:41" (1/1) ... [2022-12-12 22:20:41,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 22:20:41,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 22:20:42,105 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c[3945,3958] [2022-12-12 22:20:42,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 22:20:42,128 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 22:20:42,157 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c[3945,3958] [2022-12-12 22:20:42,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 22:20:42,170 INFO L208 MainTranslator]: Completed translation [2022-12-12 22:20:42,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:20:42 WrapperNode [2022-12-12 22:20:42,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 22:20:42,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 22:20:42,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 22:20:42,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 22:20:42,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:20:42" (1/1) ... [2022-12-12 22:20:42,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:20:42" (1/1) ... [2022-12-12 22:20:42,232 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 413 [2022-12-12 22:20:42,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 22:20:42,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 22:20:42,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 22:20:42,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 22:20:42,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:20:42" (1/1) ... [2022-12-12 22:20:42,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:20:42" (1/1) ... [2022-12-12 22:20:42,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:20:42" (1/1) ... [2022-12-12 22:20:42,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:20:42" (1/1) ... [2022-12-12 22:20:42,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:20:42" (1/1) ... [2022-12-12 22:20:42,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:20:42" (1/1) ... [2022-12-12 22:20:42,265 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:20:42" (1/1) ... [2022-12-12 22:20:42,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:20:42" (1/1) ... [2022-12-12 22:20:42,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 22:20:42,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 22:20:42,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 22:20:42,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 22:20:42,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:20:42" (1/1) ... [2022-12-12 22:20:42,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 22:20:42,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:20:42,330 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) [2022-12-12 22:20:42,368 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 [2022-12-12 22:20:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 22:20:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 22:20:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 22:20:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 22:20:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 22:20:42,390 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 22:20:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 22:20:42,390 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 22:20:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 22:20:42,390 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 22:20:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 22:20:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 22:20:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 22:20:42,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 22:20:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 22:20:42,392 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 22:20:42,509 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 22:20:42,511 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 22:20:42,930 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 22:20:42,939 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 22:20:42,939 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-12 22:20:42,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 10:20:42 BoogieIcfgContainer [2022-12-12 22:20:42,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 22:20:42,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 22:20:42,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 22:20:42,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 22:20:42,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 10:20:41" (1/3) ... [2022-12-12 22:20:42,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1102e17a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 10:20:42, skipping insertion in model container [2022-12-12 22:20:42,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:20:42" (2/3) ... [2022-12-12 22:20:42,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1102e17a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 10:20:42, skipping insertion in model container [2022-12-12 22:20:42,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 10:20:42" (3/3) ... [2022-12-12 22:20:42,946 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2022-12-12 22:20:42,959 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 22:20:42,959 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 22:20:42,959 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 22:20:43,080 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 22:20:43,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 452 places, 483 transitions, 990 flow [2022-12-12 22:20:43,378 INFO L130 PetriNetUnfolder]: 41/480 cut-off events. [2022-12-12 22:20:43,378 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 22:20:43,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 480 events. 41/480 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 632 event pairs, 0 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 406. Up to 2 conditions per place. [2022-12-12 22:20:43,388 INFO L82 GeneralOperation]: Start removeDead. Operand has 452 places, 483 transitions, 990 flow [2022-12-12 22:20:43,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 439 places, 470 transitions, 958 flow [2022-12-12 22:20:43,403 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 22:20:43,432 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 439 places, 470 transitions, 958 flow [2022-12-12 22:20:43,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 439 places, 470 transitions, 958 flow [2022-12-12 22:20:43,518 INFO L130 PetriNetUnfolder]: 41/470 cut-off events. [2022-12-12 22:20:43,519 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 22:20:43,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 470 events. 41/470 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 630 event pairs, 0 based on Foata normal form. 0/429 useless extension candidates. Maximal degree in co-relation 406. Up to 2 conditions per place. [2022-12-12 22:20:43,533 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 439 places, 470 transitions, 958 flow [2022-12-12 22:20:43,533 INFO L226 LiptonReduction]: Number of co-enabled transitions 17280 [2022-12-12 22:20:58,410 INFO L241 LiptonReduction]: Total number of compositions: 429 [2022-12-12 22:20:58,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 22:20:58,427 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6110dc8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 22:20:58,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 22:20:58,432 INFO L130 PetriNetUnfolder]: 10/41 cut-off events. [2022-12-12 22:20:58,432 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 22:20:58,433 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:20:58,433 INFO L214 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] [2022-12-12 22:20:58,434 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)] === [2022-12-12 22:20:58,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:20:58,437 INFO L85 PathProgramCache]: Analyzing trace with hash -237819189, now seen corresponding path program 1 times [2022-12-12 22:20:58,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:20:58,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450950473] [2022-12-12 22:20:58,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:20:58,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:20:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:20:58,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:20:58,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:20:58,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450950473] [2022-12-12 22:20:58,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450950473] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:20:58,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:20:58,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 22:20:58,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598271903] [2022-12-12 22:20:58,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:20:58,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 22:20:58,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:20:58,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 22:20:58,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 22:20:58,740 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 42 [2022-12-12 22:20:58,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:20:58,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:20:58,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 42 [2022-12-12 22:20:58,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:20:58,957 INFO L130 PetriNetUnfolder]: 727/1071 cut-off events. [2022-12-12 22:20:58,957 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-12-12 22:20:58,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2273 conditions, 1071 events. 727/1071 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4030 event pairs, 405 based on Foata normal form. 0/881 useless extension candidates. Maximal degree in co-relation 2079. Up to 795 conditions per place. [2022-12-12 22:20:58,962 INFO L137 encePairwiseOnDemand]: 38/42 looper letters, 52 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2022-12-12 22:20:58,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 246 flow [2022-12-12 22:20:58,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 22:20:58,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 22:20:58,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2022-12-12 22:20:58,972 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2022-12-12 22:20:58,975 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2022-12-12 22:20:58,975 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 56 transitions, 246 flow [2022-12-12 22:20:58,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 56 transitions, 246 flow [2022-12-12 22:20:58,980 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 56 transitions, 246 flow [2022-12-12 22:20:58,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:20:58,980 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:20:58,981 INFO L214 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] [2022-12-12 22:20:58,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 22:20:58,981 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)] === [2022-12-12 22:20:58,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:20:58,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2107721905, now seen corresponding path program 1 times [2022-12-12 22:20:58,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:20:58,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227024202] [2022-12-12 22:20:58,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:20:58,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:20:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:20:59,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:20:59,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:20:59,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227024202] [2022-12-12 22:20:59,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227024202] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:20:59,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:20:59,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 22:20:59,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809376232] [2022-12-12 22:20:59,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:20:59,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 22:20:59,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:20:59,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 22:20:59,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 22:20:59,117 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 42 [2022-12-12 22:20:59,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 56 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:20:59,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:20:59,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 42 [2022-12-12 22:20:59,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:20:59,333 INFO L130 PetriNetUnfolder]: 835/1231 cut-off events. [2022-12-12 22:20:59,334 INFO L131 PetriNetUnfolder]: For 101/117 co-relation queries the response was YES. [2022-12-12 22:20:59,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3840 conditions, 1231 events. 835/1231 cut-off events. For 101/117 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4695 event pairs, 333 based on Foata normal form. 0/1029 useless extension candidates. Maximal degree in co-relation 3527. Up to 913 conditions per place. [2022-12-12 22:20:59,340 INFO L137 encePairwiseOnDemand]: 38/42 looper letters, 70 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2022-12-12 22:20:59,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 77 transitions, 491 flow [2022-12-12 22:20:59,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 22:20:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 22:20:59,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2022-12-12 22:20:59,341 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2022-12-12 22:20:59,342 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2022-12-12 22:20:59,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 77 transitions, 491 flow [2022-12-12 22:20:59,345 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 77 transitions, 491 flow [2022-12-12 22:20:59,345 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 77 transitions, 491 flow [2022-12-12 22:20:59,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:20:59,346 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:20:59,346 INFO L214 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] [2022-12-12 22:20:59,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 22:20:59,346 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)] === [2022-12-12 22:20:59,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:20:59,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1575741224, now seen corresponding path program 1 times [2022-12-12 22:20:59,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:20:59,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032609981] [2022-12-12 22:20:59,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:20:59,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:20:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:20:59,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:20:59,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:20:59,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032609981] [2022-12-12 22:20:59,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032609981] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:20:59,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:20:59,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 22:20:59,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123348172] [2022-12-12 22:20:59,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:20:59,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 22:20:59,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:20:59,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 22:20:59,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 22:20:59,469 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 42 [2022-12-12 22:20:59,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 77 transitions, 491 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:20:59,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:20:59,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 42 [2022-12-12 22:20:59,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:20:59,610 INFO L130 PetriNetUnfolder]: 835/1231 cut-off events. [2022-12-12 22:20:59,611 INFO L131 PetriNetUnfolder]: For 113/129 co-relation queries the response was YES. [2022-12-12 22:20:59,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5072 conditions, 1231 events. 835/1231 cut-off events. For 113/129 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4715 event pairs, 333 based on Foata normal form. 0/1030 useless extension candidates. Maximal degree in co-relation 4658. Up to 1229 conditions per place. [2022-12-12 22:20:59,617 INFO L137 encePairwiseOnDemand]: 39/42 looper letters, 75 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2022-12-12 22:20:59,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 78 transitions, 651 flow [2022-12-12 22:20:59,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 22:20:59,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 22:20:59,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2022-12-12 22:20:59,618 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2022-12-12 22:20:59,619 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2022-12-12 22:20:59,619 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 78 transitions, 651 flow [2022-12-12 22:20:59,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 78 transitions, 651 flow [2022-12-12 22:20:59,624 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 78 transitions, 651 flow [2022-12-12 22:20:59,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:20:59,624 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:20:59,624 INFO L214 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] [2022-12-12 22:20:59,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 22:20:59,625 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)] === [2022-12-12 22:20:59,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:20:59,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1990496655, now seen corresponding path program 1 times [2022-12-12 22:20:59,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:20:59,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033369266] [2022-12-12 22:20:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:20:59,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:20:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:20:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 22:20:59,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:20:59,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033369266] [2022-12-12 22:20:59,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033369266] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:20:59,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:20:59,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 22:20:59,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742937511] [2022-12-12 22:20:59,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:20:59,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 22:20:59,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:20:59,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 22:20:59,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 22:20:59,723 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:20:59,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 78 transitions, 651 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:20:59,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:20:59,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:20:59,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:20:59,917 INFO L130 PetriNetUnfolder]: 943/1390 cut-off events. [2022-12-12 22:20:59,917 INFO L131 PetriNetUnfolder]: For 206/206 co-relation queries the response was YES. [2022-12-12 22:20:59,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6967 conditions, 1390 events. 943/1390 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5256 event pairs, 417 based on Foata normal form. 0/1180 useless extension candidates. Maximal degree in co-relation 6410. Up to 1388 conditions per place. [2022-12-12 22:20:59,927 INFO L137 encePairwiseOnDemand]: 37/42 looper letters, 75 selfloop transitions, 4 changer transitions 0/79 dead transitions. [2022-12-12 22:20:59,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 79 transitions, 817 flow [2022-12-12 22:20:59,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 22:20:59,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 22:20:59,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2022-12-12 22:20:59,928 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.26785714285714285 [2022-12-12 22:20:59,930 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2022-12-12 22:20:59,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 79 transitions, 817 flow [2022-12-12 22:20:59,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 79 transitions, 817 flow [2022-12-12 22:20:59,941 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 79 transitions, 817 flow [2022-12-12 22:20:59,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:20:59,942 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:20:59,942 INFO L214 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] [2022-12-12 22:20:59,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 22:20:59,942 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)] === [2022-12-12 22:20:59,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:20:59,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1742369267, now seen corresponding path program 1 times [2022-12-12 22:20:59,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:20:59,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841227722] [2022-12-12 22:20:59,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:20:59,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:20:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:21:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 22:21:00,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:21:00,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841227722] [2022-12-12 22:21:00,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841227722] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:21:00,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:21:00,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 22:21:00,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104776494] [2022-12-12 22:21:00,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:21:00,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 22:21:00,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:21:00,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 22:21:00,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 22:21:00,099 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 42 [2022-12-12 22:21:00,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 79 transitions, 817 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:00,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:21:00,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 42 [2022-12-12 22:21:00,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:21:00,317 INFO L130 PetriNetUnfolder]: 943/1391 cut-off events. [2022-12-12 22:21:00,317 INFO L131 PetriNetUnfolder]: For 221/221 co-relation queries the response was YES. [2022-12-12 22:21:00,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8312 conditions, 1391 events. 943/1391 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5324 event pairs, 417 based on Foata normal form. 0/1181 useless extension candidates. Maximal degree in co-relation 7644. Up to 1389 conditions per place. [2022-12-12 22:21:00,329 INFO L137 encePairwiseOnDemand]: 38/42 looper letters, 76 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2022-12-12 22:21:00,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 985 flow [2022-12-12 22:21:00,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 22:21:00,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 22:21:00,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2022-12-12 22:21:00,335 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.27976190476190477 [2022-12-12 22:21:00,337 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2022-12-12 22:21:00,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 80 transitions, 985 flow [2022-12-12 22:21:00,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 80 transitions, 985 flow [2022-12-12 22:21:00,346 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 80 transitions, 985 flow [2022-12-12 22:21:00,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:00,346 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:21:00,347 INFO L214 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] [2022-12-12 22:21:00,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 22:21:00,347 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)] === [2022-12-12 22:21:00,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:21:00,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1421819011, now seen corresponding path program 1 times [2022-12-12 22:21:00,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:21:00,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402759448] [2022-12-12 22:21:00,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:21:00,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:21:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:21:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:21:00,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:21:00,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402759448] [2022-12-12 22:21:00,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402759448] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:21:00,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:21:00,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 22:21:00,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506820316] [2022-12-12 22:21:00,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:21:00,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 22:21:00,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:21:00,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 22:21:00,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 22:21:00,458 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 42 [2022-12-12 22:21:00,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 80 transitions, 985 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:00,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:21:00,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 42 [2022-12-12 22:21:00,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:21:00,659 INFO L130 PetriNetUnfolder]: 943/1392 cut-off events. [2022-12-12 22:21:00,659 INFO L131 PetriNetUnfolder]: For 216/216 co-relation queries the response was YES. [2022-12-12 22:21:00,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9659 conditions, 1392 events. 943/1392 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5333 event pairs, 417 based on Foata normal form. 0/1182 useless extension candidates. Maximal degree in co-relation 8878. Up to 1390 conditions per place. [2022-12-12 22:21:00,665 INFO L137 encePairwiseOnDemand]: 38/42 looper letters, 77 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2022-12-12 22:21:00,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 81 transitions, 1157 flow [2022-12-12 22:21:00,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 22:21:00,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 22:21:00,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2022-12-12 22:21:00,667 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.27976190476190477 [2022-12-12 22:21:00,668 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2022-12-12 22:21:00,668 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 81 transitions, 1157 flow [2022-12-12 22:21:00,673 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 81 transitions, 1157 flow [2022-12-12 22:21:00,673 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 81 transitions, 1157 flow [2022-12-12 22:21:00,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:00,673 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:21:00,673 INFO L214 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] [2022-12-12 22:21:00,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 22:21:00,674 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)] === [2022-12-12 22:21:00,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:21:00,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1688204407, now seen corresponding path program 1 times [2022-12-12 22:21:00,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:21:00,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163666991] [2022-12-12 22:21:00,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:21:00,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:21:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:21:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 22:21:00,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:21:00,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163666991] [2022-12-12 22:21:00,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163666991] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:21:00,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:21:00,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 22:21:00,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071428246] [2022-12-12 22:21:00,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:21:00,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 22:21:00,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:21:00,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 22:21:00,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 22:21:00,788 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:21:00,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 81 transitions, 1157 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:00,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:21:00,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:21:00,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:21:00,964 INFO L130 PetriNetUnfolder]: 943/1393 cut-off events. [2022-12-12 22:21:00,964 INFO L131 PetriNetUnfolder]: For 226/226 co-relation queries the response was YES. [2022-12-12 22:21:00,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11060 conditions, 1393 events. 943/1393 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5342 event pairs, 417 based on Foata normal form. 0/1183 useless extension candidates. Maximal degree in co-relation 10160. Up to 1392 conditions per place. [2022-12-12 22:21:00,972 INFO L137 encePairwiseOnDemand]: 38/42 looper letters, 79 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2022-12-12 22:21:00,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 82 transitions, 1335 flow [2022-12-12 22:21:00,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 22:21:00,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 22:21:00,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2022-12-12 22:21:00,972 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2619047619047619 [2022-12-12 22:21:00,973 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2022-12-12 22:21:00,973 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 82 transitions, 1335 flow [2022-12-12 22:21:00,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 82 transitions, 1335 flow [2022-12-12 22:21:00,979 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 82 transitions, 1335 flow [2022-12-12 22:21:00,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:00,979 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:21:00,979 INFO L214 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] [2022-12-12 22:21:00,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 22:21:00,980 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)] === [2022-12-12 22:21:00,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:21:00,980 INFO L85 PathProgramCache]: Analyzing trace with hash -900887956, now seen corresponding path program 1 times [2022-12-12 22:21:00,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:21:00,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344231257] [2022-12-12 22:21:00,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:21:00,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:21:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:21:01,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-12 22:21:01,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:21:01,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344231257] [2022-12-12 22:21:01,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344231257] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:21:01,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:21:01,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 22:21:01,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102948988] [2022-12-12 22:21:01,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:21:01,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 22:21:01,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:21:01,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 22:21:01,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 22:21:01,204 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 42 [2022-12-12 22:21:01,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 82 transitions, 1335 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:01,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:21:01,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 42 [2022-12-12 22:21:01,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:21:01,377 INFO L130 PetriNetUnfolder]: 943/1394 cut-off events. [2022-12-12 22:21:01,377 INFO L131 PetriNetUnfolder]: For 386/386 co-relation queries the response was YES. [2022-12-12 22:21:01,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12411 conditions, 1394 events. 943/1394 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5319 event pairs, 417 based on Foata normal form. 0/1184 useless extension candidates. Maximal degree in co-relation 11394. Up to 1393 conditions per place. [2022-12-12 22:21:01,387 INFO L137 encePairwiseOnDemand]: 38/42 looper letters, 79 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2022-12-12 22:21:01,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 1515 flow [2022-12-12 22:21:01,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 22:21:01,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 22:21:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2022-12-12 22:21:01,389 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.27976190476190477 [2022-12-12 22:21:01,390 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2022-12-12 22:21:01,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 83 transitions, 1515 flow [2022-12-12 22:21:01,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 83 transitions, 1515 flow [2022-12-12 22:21:01,397 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 83 transitions, 1515 flow [2022-12-12 22:21:01,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:01,397 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:21:01,398 INFO L214 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] [2022-12-12 22:21:01,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 22:21:01,398 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)] === [2022-12-12 22:21:01,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:21:01,398 INFO L85 PathProgramCache]: Analyzing trace with hash 2146376005, now seen corresponding path program 1 times [2022-12-12 22:21:01,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:21:01,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745718815] [2022-12-12 22:21:01,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:21:01,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:21:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:21:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:21:02,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:21:02,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745718815] [2022-12-12 22:21:02,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745718815] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:21:02,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:21:02,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-12 22:21:02,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064373989] [2022-12-12 22:21:02,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:21:02,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 22:21:02,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:21:02,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 22:21:02,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-12-12 22:21:02,452 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:21:02,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 83 transitions, 1515 flow. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:02,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:21:02,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:21:02,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:21:03,178 INFO L130 PetriNetUnfolder]: 1273/1944 cut-off events. [2022-12-12 22:21:03,178 INFO L131 PetriNetUnfolder]: For 393/393 co-relation queries the response was YES. [2022-12-12 22:21:03,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19261 conditions, 1944 events. 1273/1944 cut-off events. For 393/393 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8305 event pairs, 503 based on Foata normal form. 1/1691 useless extension candidates. Maximal degree in co-relation 16916. Up to 1943 conditions per place. [2022-12-12 22:21:03,189 INFO L137 encePairwiseOnDemand]: 31/42 looper letters, 152 selfloop transitions, 15 changer transitions 8/175 dead transitions. [2022-12-12 22:21:03,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 175 transitions, 3551 flow [2022-12-12 22:21:03,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 22:21:03,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 22:21:03,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2022-12-12 22:21:03,194 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2761904761904762 [2022-12-12 22:21:03,194 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2022-12-12 22:21:03,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 175 transitions, 3551 flow [2022-12-12 22:21:03,204 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 167 transitions, 3379 flow [2022-12-12 22:21:03,204 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 167 transitions, 3379 flow [2022-12-12 22:21:03,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:03,204 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:21:03,204 INFO L214 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] [2022-12-12 22:21:03,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 22:21:03,205 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)] === [2022-12-12 22:21:03,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:21:03,205 INFO L85 PathProgramCache]: Analyzing trace with hash 482252467, now seen corresponding path program 2 times [2022-12-12 22:21:03,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:21:03,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734953496] [2022-12-12 22:21:03,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:21:03,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:21:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:21:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:21:03,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:21:03,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734953496] [2022-12-12 22:21:03,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734953496] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:21:03,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:21:03,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 22:21:03,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698386925] [2022-12-12 22:21:03,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:21:03,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 22:21:03,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:21:03,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 22:21:03,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:21:03,728 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:21:03,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 167 transitions, 3379 flow. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:03,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:21:03,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:21:03,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:21:04,507 INFO L130 PetriNetUnfolder]: 2019/3179 cut-off events. [2022-12-12 22:21:04,507 INFO L131 PetriNetUnfolder]: For 1087/1087 co-relation queries the response was YES. [2022-12-12 22:21:04,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34805 conditions, 3179 events. 2019/3179 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 16184 event pairs, 357 based on Foata normal form. 1/2786 useless extension candidates. Maximal degree in co-relation 30154. Up to 3178 conditions per place. [2022-12-12 22:21:04,527 INFO L137 encePairwiseOnDemand]: 31/42 looper letters, 301 selfloop transitions, 63 changer transitions 11/375 dead transitions. [2022-12-12 22:21:04,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 375 transitions, 8418 flow [2022-12-12 22:21:04,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 22:21:04,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 22:21:04,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2022-12-12 22:21:04,528 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.33095238095238094 [2022-12-12 22:21:04,529 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2022-12-12 22:21:04,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 375 transitions, 8418 flow [2022-12-12 22:21:04,548 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 364 transitions, 8167 flow [2022-12-12 22:21:04,548 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 364 transitions, 8167 flow [2022-12-12 22:21:04,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:04,548 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:21:04,548 INFO L214 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] [2022-12-12 22:21:04,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 22:21:04,549 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)] === [2022-12-12 22:21:04,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:21:04,549 INFO L85 PathProgramCache]: Analyzing trace with hash 500823945, now seen corresponding path program 1 times [2022-12-12 22:21:04,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:21:04,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140638925] [2022-12-12 22:21:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:21:04,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:21:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:21:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:21:05,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:21:05,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140638925] [2022-12-12 22:21:05,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140638925] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:21:05,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:21:05,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 22:21:05,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654198358] [2022-12-12 22:21:05,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:21:05,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 22:21:05,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:21:05,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 22:21:05,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-12 22:21:05,039 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:21:05,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 364 transitions, 8167 flow. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:05,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:21:05,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:21:05,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:21:06,961 INFO L130 PetriNetUnfolder]: 4390/6988 cut-off events. [2022-12-12 22:21:06,961 INFO L131 PetriNetUnfolder]: For 6270/6270 co-relation queries the response was YES. [2022-12-12 22:21:06,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84208 conditions, 6988 events. 4390/6988 cut-off events. For 6270/6270 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 42301 event pairs, 239 based on Foata normal form. 1/6033 useless extension candidates. Maximal degree in co-relation 71856. Up to 6987 conditions per place. [2022-12-12 22:21:07,014 INFO L137 encePairwiseOnDemand]: 30/42 looper letters, 897 selfloop transitions, 158 changer transitions 11/1066 dead transitions. [2022-12-12 22:21:07,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 1066 transitions, 26169 flow [2022-12-12 22:21:07,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 22:21:07,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 22:21:07,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 219 transitions. [2022-12-12 22:21:07,016 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.37244897959183676 [2022-12-12 22:21:07,017 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2022-12-12 22:21:07,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 1066 transitions, 26169 flow [2022-12-12 22:21:07,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 1055 transitions, 25896 flow [2022-12-12 22:21:07,075 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 1055 transitions, 25896 flow [2022-12-12 22:21:07,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:07,075 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:21:07,075 INFO L214 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] [2022-12-12 22:21:07,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 22:21:07,076 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)] === [2022-12-12 22:21:07,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:21:07,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1341097991, now seen corresponding path program 3 times [2022-12-12 22:21:07,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:21:07,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822707126] [2022-12-12 22:21:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:21:07,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:21:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:21:07,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:21:07,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:21:07,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822707126] [2022-12-12 22:21:07,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822707126] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:21:07,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:21:07,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 22:21:07,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154553240] [2022-12-12 22:21:07,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:21:07,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 22:21:07,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:21:07,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 22:21:07,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-12 22:21:07,667 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:21:07,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 1055 transitions, 25896 flow. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:07,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:21:07,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:21:07,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:21:10,026 INFO L130 PetriNetUnfolder]: 4807/8043 cut-off events. [2022-12-12 22:21:10,026 INFO L131 PetriNetUnfolder]: For 3110/3110 co-relation queries the response was YES. [2022-12-12 22:21:10,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104981 conditions, 8043 events. 4807/8043 cut-off events. For 3110/3110 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 53198 event pairs, 121 based on Foata normal form. 7/6992 useless extension candidates. Maximal degree in co-relation 84882. Up to 8042 conditions per place. [2022-12-12 22:21:10,084 INFO L137 encePairwiseOnDemand]: 36/42 looper letters, 1783 selfloop transitions, 197 changer transitions 157/2137 dead transitions. [2022-12-12 22:21:10,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 2137 transitions, 56591 flow [2022-12-12 22:21:10,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 22:21:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 22:21:10,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2022-12-12 22:21:10,085 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.336734693877551 [2022-12-12 22:21:10,086 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 51 predicate places. [2022-12-12 22:21:10,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 2137 transitions, 56591 flow [2022-12-12 22:21:10,149 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 1980 transitions, 52377 flow [2022-12-12 22:21:10,150 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 1980 transitions, 52377 flow [2022-12-12 22:21:10,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:10,150 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:21:10,150 INFO L214 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] [2022-12-12 22:21:10,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-12 22:21:10,150 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)] === [2022-12-12 22:21:10,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:21:10,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1628416411, now seen corresponding path program 1 times [2022-12-12 22:21:10,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:21:10,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224193479] [2022-12-12 22:21:10,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:21:10,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:21:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:21:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:21:10,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:21:10,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224193479] [2022-12-12 22:21:10,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224193479] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:21:10,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:21:10,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 22:21:10,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756788107] [2022-12-12 22:21:10,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:21:10,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 22:21:10,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:21:10,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 22:21:10,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 22:21:10,372 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:21:10,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 1980 transitions, 52377 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:10,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:21:10,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:21:10,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:21:14,813 INFO L130 PetriNetUnfolder]: 5840/10026 cut-off events. [2022-12-12 22:21:14,814 INFO L131 PetriNetUnfolder]: For 5225/5225 co-relation queries the response was YES. [2022-12-12 22:21:14,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141110 conditions, 10026 events. 5840/10026 cut-off events. For 5225/5225 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 71246 event pairs, 86 based on Foata normal form. 0/8946 useless extension candidates. Maximal degree in co-relation 115936. Up to 10025 conditions per place. [2022-12-12 22:21:14,994 INFO L137 encePairwiseOnDemand]: 35/42 looper letters, 2583 selfloop transitions, 422 changer transitions 12/3017 dead transitions. [2022-12-12 22:21:14,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 3017 transitions, 85955 flow [2022-12-12 22:21:14,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 22:21:14,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 22:21:14,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2022-12-12 22:21:14,996 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2022-12-12 22:21:14,997 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 53 predicate places. [2022-12-12 22:21:14,997 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 3017 transitions, 85955 flow [2022-12-12 22:21:15,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 3005 transitions, 85610 flow [2022-12-12 22:21:15,112 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 3005 transitions, 85610 flow [2022-12-12 22:21:15,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:15,113 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:21:15,113 INFO L214 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] [2022-12-12 22:21:15,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-12 22:21:15,113 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)] === [2022-12-12 22:21:15,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:21:15,113 INFO L85 PathProgramCache]: Analyzing trace with hash -684675579, now seen corresponding path program 4 times [2022-12-12 22:21:15,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:21:15,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260395522] [2022-12-12 22:21:15,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:21:15,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:21:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:21:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:21:15,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:21:15,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260395522] [2022-12-12 22:21:15,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260395522] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:21:15,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:21:15,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 22:21:15,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560726218] [2022-12-12 22:21:15,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:21:15,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 22:21:15,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:21:15,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 22:21:15,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:21:15,613 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:21:15,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 3005 transitions, 85610 flow. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:15,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:21:15,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:21:15,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:21:22,983 INFO L130 PetriNetUnfolder]: 6765/11968 cut-off events. [2022-12-12 22:21:22,983 INFO L131 PetriNetUnfolder]: For 4391/4391 co-relation queries the response was YES. [2022-12-12 22:21:22,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180460 conditions, 11968 events. 6765/11968 cut-off events. For 4391/4391 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 91467 event pairs, 70 based on Foata normal form. 4/10788 useless extension candidates. Maximal degree in co-relation 144641. Up to 11967 conditions per place. [2022-12-12 22:21:23,073 INFO L137 encePairwiseOnDemand]: 33/42 looper letters, 3678 selfloop transitions, 182 changer transitions 65/3925 dead transitions. [2022-12-12 22:21:23,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 3925 transitions, 119763 flow [2022-12-12 22:21:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 22:21:23,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 22:21:23,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2022-12-12 22:21:23,074 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3273809523809524 [2022-12-12 22:21:23,074 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 60 predicate places. [2022-12-12 22:21:23,075 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 3925 transitions, 119763 flow [2022-12-12 22:21:23,188 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 3860 transitions, 117741 flow [2022-12-12 22:21:23,188 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 3860 transitions, 117741 flow [2022-12-12 22:21:23,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:23,189 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:21:23,189 INFO L214 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] [2022-12-12 22:21:23,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-12 22:21:23,189 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)] === [2022-12-12 22:21:23,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:21:23,189 INFO L85 PathProgramCache]: Analyzing trace with hash 363952975, now seen corresponding path program 5 times [2022-12-12 22:21:23,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:21:23,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080939764] [2022-12-12 22:21:23,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:21:23,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:21:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:21:23,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:21:23,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:21:23,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080939764] [2022-12-12 22:21:23,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080939764] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:21:23,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:21:23,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 22:21:23,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907747012] [2022-12-12 22:21:23,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:21:23,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 22:21:23,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:21:23,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 22:21:23,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:21:23,711 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:21:23,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 3860 transitions, 117741 flow. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:23,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:21:23,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:21:23,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:21:33,970 INFO L130 PetriNetUnfolder]: 6782/12167 cut-off events. [2022-12-12 22:21:33,971 INFO L131 PetriNetUnfolder]: For 4454/4454 co-relation queries the response was YES. [2022-12-12 22:21:33,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195671 conditions, 12167 events. 6782/12167 cut-off events. For 4454/4454 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 95025 event pairs, 89 based on Foata normal form. 4/10992 useless extension candidates. Maximal degree in co-relation 156301. Up to 12166 conditions per place. [2022-12-12 22:21:34,052 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 3600 selfloop transitions, 442 changer transitions 54/4096 dead transitions. [2022-12-12 22:21:34,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 4096 transitions, 133235 flow [2022-12-12 22:21:34,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 22:21:34,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 22:21:34,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2022-12-12 22:21:34,053 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.30357142857142855 [2022-12-12 22:21:34,054 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 65 predicate places. [2022-12-12 22:21:34,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 4096 transitions, 133235 flow [2022-12-12 22:21:34,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 4042 transitions, 131435 flow [2022-12-12 22:21:34,160 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 4042 transitions, 131435 flow [2022-12-12 22:21:34,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:34,161 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:21:34,161 INFO L214 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] [2022-12-12 22:21:34,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-12 22:21:34,161 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)] === [2022-12-12 22:21:34,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:21:34,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1165627293, now seen corresponding path program 6 times [2022-12-12 22:21:34,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:21:34,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629820389] [2022-12-12 22:21:34,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:21:34,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:21:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:21:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:21:34,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:21:34,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629820389] [2022-12-12 22:21:34,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629820389] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:21:34,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:21:34,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 22:21:34,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898225328] [2022-12-12 22:21:34,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:21:34,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 22:21:34,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:21:34,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 22:21:34,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:21:34,508 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:21:34,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 4042 transitions, 131435 flow. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:34,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:21:34,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:21:34,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:21:47,040 INFO L130 PetriNetUnfolder]: 6754/12085 cut-off events. [2022-12-12 22:21:47,040 INFO L131 PetriNetUnfolder]: For 4424/4424 co-relation queries the response was YES. [2022-12-12 22:21:47,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206417 conditions, 12085 events. 6754/12085 cut-off events. For 4424/4424 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 93930 event pairs, 94 based on Foata normal form. 4/10910 useless extension candidates. Maximal degree in co-relation 165164. Up to 12084 conditions per place. [2022-12-12 22:21:47,146 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 3556 selfloop transitions, 436 changer transitions 46/4038 dead transitions. [2022-12-12 22:21:47,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 4038 transitions, 139383 flow [2022-12-12 22:21:47,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 22:21:47,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 22:21:47,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2022-12-12 22:21:47,148 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2976190476190476 [2022-12-12 22:21:47,148 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2022-12-12 22:21:47,148 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 4038 transitions, 139383 flow [2022-12-12 22:21:47,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 3992 transitions, 137771 flow [2022-12-12 22:21:47,284 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 3992 transitions, 137771 flow [2022-12-12 22:21:47,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:47,285 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:21:47,285 INFO L214 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] [2022-12-12 22:21:47,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-12 22:21:47,285 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)] === [2022-12-12 22:21:47,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:21:47,285 INFO L85 PathProgramCache]: Analyzing trace with hash 149505195, now seen corresponding path program 7 times [2022-12-12 22:21:47,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:21:47,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450862829] [2022-12-12 22:21:47,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:21:47,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:21:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:21:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:21:47,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:21:47,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450862829] [2022-12-12 22:21:47,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450862829] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:21:47,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:21:47,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 22:21:47,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731375056] [2022-12-12 22:21:47,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:21:47,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 22:21:47,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:21:47,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 22:21:47,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:21:47,674 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:21:47,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 3992 transitions, 137771 flow. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:21:47,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:21:47,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:21:47,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:22:00,227 INFO L130 PetriNetUnfolder]: 6738/12023 cut-off events. [2022-12-12 22:22:00,227 INFO L131 PetriNetUnfolder]: For 4395/4395 co-relation queries the response was YES. [2022-12-12 22:22:00,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217367 conditions, 12023 events. 6738/12023 cut-off events. For 4395/4395 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 92953 event pairs, 70 based on Foata normal form. 4/10848 useless extension candidates. Maximal degree in co-relation 174003. Up to 12022 conditions per place. [2022-12-12 22:22:00,322 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 3524 selfloop transitions, 410 changer transitions 54/3988 dead transitions. [2022-12-12 22:22:00,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 3988 transitions, 145611 flow [2022-12-12 22:22:00,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 22:22:00,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 22:22:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2022-12-12 22:22:00,323 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2916666666666667 [2022-12-12 22:22:00,324 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 76 predicate places. [2022-12-12 22:22:00,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 3988 transitions, 145611 flow [2022-12-12 22:22:00,450 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 3934 transitions, 143619 flow [2022-12-12 22:22:00,450 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 3934 transitions, 143619 flow [2022-12-12 22:22:00,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:22:00,450 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:22:00,451 INFO L214 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] [2022-12-12 22:22:00,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-12 22:22:00,451 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)] === [2022-12-12 22:22:00,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:22:00,451 INFO L85 PathProgramCache]: Analyzing trace with hash -219343035, now seen corresponding path program 8 times [2022-12-12 22:22:00,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:22:00,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795984798] [2022-12-12 22:22:00,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:22:00,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:22:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:22:00,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:22:00,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:22:00,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795984798] [2022-12-12 22:22:00,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795984798] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:22:00,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:22:00,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 22:22:00,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034927909] [2022-12-12 22:22:00,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:22:00,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 22:22:00,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:22:00,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 22:22:00,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:22:00,882 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:22:00,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 3934 transitions, 143619 flow. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:22:00,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:22:00,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:22:00,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:22:13,607 INFO L130 PetriNetUnfolder]: 6928/12497 cut-off events. [2022-12-12 22:22:13,607 INFO L131 PetriNetUnfolder]: For 6400/6400 co-relation queries the response was YES. [2022-12-12 22:22:13,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238493 conditions, 12497 events. 6928/12497 cut-off events. For 6400/6400 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 98562 event pairs, 142 based on Foata normal form. 4/11328 useless extension candidates. Maximal degree in co-relation 189191. Up to 12496 conditions per place. [2022-12-12 22:22:13,722 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 3765 selfloop transitions, 471 changer transitions 54/4290 dead transitions. [2022-12-12 22:22:13,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 4290 transitions, 165303 flow [2022-12-12 22:22:13,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 22:22:13,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 22:22:13,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2022-12-12 22:22:13,723 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2767857142857143 [2022-12-12 22:22:13,723 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 80 predicate places. [2022-12-12 22:22:13,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 4290 transitions, 165303 flow [2022-12-12 22:22:13,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 4236 transitions, 163179 flow [2022-12-12 22:22:13,874 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 4236 transitions, 163179 flow [2022-12-12 22:22:13,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:22:13,875 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:22:13,875 INFO L214 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] [2022-12-12 22:22:13,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-12 22:22:13,875 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)] === [2022-12-12 22:22:13,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:22:13,875 INFO L85 PathProgramCache]: Analyzing trace with hash 694684029, now seen corresponding path program 2 times [2022-12-12 22:22:13,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:22:13,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121612552] [2022-12-12 22:22:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:22:13,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:22:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:22:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:22:14,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:22:14,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121612552] [2022-12-12 22:22:14,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121612552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:22:14,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:22:14,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 22:22:14,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660988883] [2022-12-12 22:22:14,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:22:14,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 22:22:14,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:22:14,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 22:22:14,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-12-12 22:22:14,475 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:22:14,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 4236 transitions, 163179 flow. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:22:14,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:22:14,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:22:14,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:22:35,126 INFO L130 PetriNetUnfolder]: 8965/16327 cut-off events. [2022-12-12 22:22:35,126 INFO L131 PetriNetUnfolder]: For 7005/7005 co-relation queries the response was YES. [2022-12-12 22:22:35,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328249 conditions, 16327 events. 8965/16327 cut-off events. For 7005/7005 co-relation queries the response was YES. Maximal size of possible extension queue 953. Compared 135946 event pairs, 76 based on Foata normal form. 2/14794 useless extension candidates. Maximal degree in co-relation 259272. Up to 16326 conditions per place. [2022-12-12 22:22:35,264 INFO L137 encePairwiseOnDemand]: 32/42 looper letters, 5832 selfloop transitions, 271 changer transitions 27/6130 dead transitions. [2022-12-12 22:22:35,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 6130 transitions, 248668 flow [2022-12-12 22:22:35,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 22:22:35,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 22:22:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2022-12-12 22:22:35,266 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2976190476190476 [2022-12-12 22:22:35,266 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2022-12-12 22:22:35,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 6130 transitions, 248668 flow [2022-12-12 22:22:35,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 6103 transitions, 247552 flow [2022-12-12 22:22:35,469 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 6103 transitions, 247552 flow [2022-12-12 22:22:35,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:22:35,469 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:22:35,469 INFO L214 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] [2022-12-12 22:22:35,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-12 22:22:35,469 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)] === [2022-12-12 22:22:35,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:22:35,469 INFO L85 PathProgramCache]: Analyzing trace with hash 149223819, now seen corresponding path program 9 times [2022-12-12 22:22:35,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:22:35,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063215770] [2022-12-12 22:22:35,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:22:35,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:22:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:22:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:22:35,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:22:35,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063215770] [2022-12-12 22:22:35,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063215770] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:22:35,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:22:35,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 22:22:35,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526963037] [2022-12-12 22:22:35,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:22:35,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 22:22:35,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:22:35,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 22:22:35,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:22:35,948 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:22:35,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 6103 transitions, 247552 flow. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:22:35,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:22:35,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:22:35,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:23:05,725 INFO L130 PetriNetUnfolder]: 9081/16774 cut-off events. [2022-12-12 22:23:05,725 INFO L131 PetriNetUnfolder]: For 7162/7162 co-relation queries the response was YES. [2022-12-12 22:23:05,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354042 conditions, 16774 events. 9081/16774 cut-off events. For 7162/7162 co-relation queries the response was YES. Maximal size of possible extension queue 981. Compared 142656 event pairs, 90 based on Foata normal form. 8/15215 useless extension candidates. Maximal degree in co-relation 275352. Up to 16773 conditions per place. [2022-12-12 22:23:05,867 INFO L137 encePairwiseOnDemand]: 33/42 looper letters, 5919 selfloop transitions, 366 changer transitions 124/6409 dead transitions. [2022-12-12 22:23:05,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 6409 transitions, 272913 flow [2022-12-12 22:23:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 22:23:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 22:23:05,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2022-12-12 22:23:05,868 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.35119047619047616 [2022-12-12 22:23:05,868 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 94 predicate places. [2022-12-12 22:23:05,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 6409 transitions, 272913 flow [2022-12-12 22:23:06,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 6285 transitions, 267579 flow [2022-12-12 22:23:06,074 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 6285 transitions, 267579 flow [2022-12-12 22:23:06,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:23:06,075 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:23:06,075 INFO L214 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] [2022-12-12 22:23:06,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-12 22:23:06,075 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)] === [2022-12-12 22:23:06,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:23:06,075 INFO L85 PathProgramCache]: Analyzing trace with hash -896515489, now seen corresponding path program 3 times [2022-12-12 22:23:06,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:23:06,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882687531] [2022-12-12 22:23:06,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:23:06,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:23:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:23:06,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:23:06,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:23:06,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882687531] [2022-12-12 22:23:06,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882687531] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:23:06,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:23:06,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-12 22:23:06,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717903479] [2022-12-12 22:23:06,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:23:06,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-12 22:23:06,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:23:06,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-12 22:23:06,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-12-12 22:23:06,833 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:23:06,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 6285 transitions, 267579 flow. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:23:06,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:23:06,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:23:06,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:23:40,134 INFO L130 PetriNetUnfolder]: 9099/16896 cut-off events. [2022-12-12 22:23:40,134 INFO L131 PetriNetUnfolder]: For 5288/5288 co-relation queries the response was YES. [2022-12-12 22:23:40,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373544 conditions, 16896 events. 9099/16896 cut-off events. For 5288/5288 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 144962 event pairs, 22 based on Foata normal form. 1/15357 useless extension candidates. Maximal degree in co-relation 298067. Up to 16895 conditions per place. [2022-12-12 22:23:40,295 INFO L137 encePairwiseOnDemand]: 32/42 looper letters, 6359 selfloop transitions, 219 changer transitions 14/6592 dead transitions. [2022-12-12 22:23:40,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 6592 transitions, 293903 flow [2022-12-12 22:23:40,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 22:23:40,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 22:23:40,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2022-12-12 22:23:40,296 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.27380952380952384 [2022-12-12 22:23:40,296 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 101 predicate places. [2022-12-12 22:23:40,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 6592 transitions, 293903 flow [2022-12-12 22:23:40,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 6578 transitions, 293269 flow [2022-12-12 22:23:40,547 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 6578 transitions, 293269 flow [2022-12-12 22:23:40,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:23:40,547 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:23:40,547 INFO L214 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] [2022-12-12 22:23:40,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-12 22:23:40,548 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:23:40,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:23:40,548 INFO L85 PathProgramCache]: Analyzing trace with hash -586523173, now seen corresponding path program 10 times [2022-12-12 22:23:40,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:23:40,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362612595] [2022-12-12 22:23:40,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:23:40,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:23:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:23:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:23:40,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:23:40,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362612595] [2022-12-12 22:23:40,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362612595] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:23:40,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:23:40,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 22:23:40,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617179361] [2022-12-12 22:23:40,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:23:40,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 22:23:40,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:23:40,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 22:23:40,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:23:40,955 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:23:40,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 6578 transitions, 293269 flow. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:23:40,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:23:40,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:23:40,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:24:28,729 INFO L130 PetriNetUnfolder]: 9186/17575 cut-off events. [2022-12-12 22:24:28,730 INFO L131 PetriNetUnfolder]: For 5566/5566 co-relation queries the response was YES. [2022-12-12 22:24:28,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406279 conditions, 17575 events. 9186/17575 cut-off events. For 5566/5566 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 156577 event pairs, 22 based on Foata normal form. 6/16041 useless extension candidates. Maximal degree in co-relation 321697. Up to 17574 conditions per place. [2022-12-12 22:24:28,897 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 6439 selfloop transitions, 623 changer transitions 82/7144 dead transitions. [2022-12-12 22:24:28,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 7144 transitions, 333073 flow [2022-12-12 22:24:28,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 22:24:28,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 22:24:28,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2022-12-12 22:24:28,898 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2976190476190476 [2022-12-12 22:24:28,898 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 107 predicate places. [2022-12-12 22:24:28,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 7144 transitions, 333073 flow [2022-12-12 22:24:29,139 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 7062 transitions, 329193 flow [2022-12-12 22:24:29,139 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 7062 transitions, 329193 flow [2022-12-12 22:24:29,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:24:29,140 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:24:29,140 INFO L214 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] [2022-12-12 22:24:29,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-12 22:24:29,140 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:24:29,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:24:29,140 INFO L85 PathProgramCache]: Analyzing trace with hash 582331283, now seen corresponding path program 11 times [2022-12-12 22:24:29,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:24:29,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174366094] [2022-12-12 22:24:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:24:29,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:24:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:24:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:24:29,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:24:29,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174366094] [2022-12-12 22:24:29,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174366094] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:24:29,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:24:29,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 22:24:29,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725603466] [2022-12-12 22:24:29,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:24:29,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 22:24:29,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:24:29,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 22:24:29,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:24:29,614 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:24:29,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 7062 transitions, 329193 flow. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:24:29,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:24:29,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:24:29,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:25:14,311 INFO L130 PetriNetUnfolder]: 9144/17449 cut-off events. [2022-12-12 22:25:14,311 INFO L131 PetriNetUnfolder]: For 7381/7381 co-relation queries the response was YES. [2022-12-12 22:25:14,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420789 conditions, 17449 events. 9144/17449 cut-off events. For 7381/7381 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 154494 event pairs, 30 based on Foata normal form. 6/15915 useless extension candidates. Maximal degree in co-relation 323794. Up to 17448 conditions per place. [2022-12-12 22:25:14,600 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 6369 selfloop transitions, 617 changer transitions 70/7056 dead transitions. [2022-12-12 22:25:14,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 7056 transitions, 343029 flow [2022-12-12 22:25:14,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 22:25:14,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 22:25:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2022-12-12 22:25:14,601 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.25297619047619047 [2022-12-12 22:25:14,602 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 113 predicate places. [2022-12-12 22:25:14,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 7056 transitions, 343029 flow [2022-12-12 22:25:14,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 6986 transitions, 339597 flow [2022-12-12 22:25:14,836 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 6986 transitions, 339597 flow [2022-12-12 22:25:14,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:25:14,836 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:25:14,837 INFO L214 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] [2022-12-12 22:25:14,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-12 22:25:14,837 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:25:14,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:25:14,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1049168291, now seen corresponding path program 4 times [2022-12-12 22:25:14,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:25:14,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385592353] [2022-12-12 22:25:14,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:25:14,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:25:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:25:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:25:15,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:25:15,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385592353] [2022-12-12 22:25:15,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385592353] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:25:15,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:25:15,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 22:25:15,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912320692] [2022-12-12 22:25:15,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:25:15,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 22:25:15,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:25:15,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 22:25:15,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-12 22:25:15,203 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:25:15,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 6986 transitions, 339597 flow. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:25:15,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:25:15,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:25:15,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:26:05,571 INFO L130 PetriNetUnfolder]: 9221/17649 cut-off events. [2022-12-12 22:26:05,572 INFO L131 PetriNetUnfolder]: For 7740/7740 co-relation queries the response was YES. [2022-12-12 22:26:05,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443264 conditions, 17649 events. 9221/17649 cut-off events. For 7740/7740 co-relation queries the response was YES. Maximal size of possible extension queue 1058. Compared 157098 event pairs, 30 based on Foata normal form. 1/16090 useless extension candidates. Maximal degree in co-relation 339024. Up to 17648 conditions per place. [2022-12-12 22:26:05,847 INFO L137 encePairwiseOnDemand]: 32/42 looper letters, 6686 selfloop transitions, 419 changer transitions 13/7118 dead transitions. [2022-12-12 22:26:05,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 7118 transitions, 360283 flow [2022-12-12 22:26:05,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 22:26:05,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 22:26:05,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2022-12-12 22:26:05,848 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3492063492063492 [2022-12-12 22:26:05,848 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 119 predicate places. [2022-12-12 22:26:05,848 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 7118 transitions, 360283 flow [2022-12-12 22:26:06,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 7105 transitions, 359621 flow [2022-12-12 22:26:06,107 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 7105 transitions, 359621 flow [2022-12-12 22:26:06,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:26:06,107 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:26:06,107 INFO L214 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] [2022-12-12 22:26:06,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-12 22:26:06,107 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:26:06,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:26:06,108 INFO L85 PathProgramCache]: Analyzing trace with hash 303123597, now seen corresponding path program 5 times [2022-12-12 22:26:06,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:26:06,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873023144] [2022-12-12 22:26:06,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:26:06,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:26:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:26:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:26:06,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:26:06,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873023144] [2022-12-12 22:26:06,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873023144] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:26:06,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:26:06,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 22:26:06,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575007065] [2022-12-12 22:26:06,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:26:06,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 22:26:06,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:26:06,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 22:26:06,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-12 22:26:06,474 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:26:06,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 7105 transitions, 359621 flow. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:26:06,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:26:06,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:26:06,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:26:59,167 INFO L130 PetriNetUnfolder]: 9201/17609 cut-off events. [2022-12-12 22:26:59,167 INFO L131 PetriNetUnfolder]: For 6126/6126 co-relation queries the response was YES. [2022-12-12 22:26:59,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459868 conditions, 17609 events. 9201/17609 cut-off events. For 6126/6126 co-relation queries the response was YES. Maximal size of possible extension queue 1057. Compared 156938 event pairs, 22 based on Foata normal form. 1/16050 useless extension candidates. Maximal degree in co-relation 365379. Up to 17608 conditions per place. [2022-12-12 22:26:59,338 INFO L137 encePairwiseOnDemand]: 32/42 looper letters, 6665 selfloop transitions, 422 changer transitions 17/7104 dead transitions. [2022-12-12 22:26:59,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 7104 transitions, 373779 flow [2022-12-12 22:26:59,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 22:26:59,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 22:26:59,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2022-12-12 22:26:59,339 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.34656084656084657 [2022-12-12 22:26:59,340 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 126 predicate places. [2022-12-12 22:26:59,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 7104 transitions, 373779 flow [2022-12-12 22:26:59,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 7087 transitions, 372871 flow [2022-12-12 22:26:59,602 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 7087 transitions, 372871 flow [2022-12-12 22:26:59,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:26:59,602 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:26:59,602 INFO L214 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] [2022-12-12 22:26:59,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-12 22:26:59,602 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:26:59,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:26:59,603 INFO L85 PathProgramCache]: Analyzing trace with hash 215151145, now seen corresponding path program 12 times [2022-12-12 22:26:59,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:26:59,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668036097] [2022-12-12 22:26:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:26:59,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:26:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:26:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:26:59,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:26:59,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668036097] [2022-12-12 22:26:59,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668036097] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:26:59,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:26:59,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 22:26:59,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580744028] [2022-12-12 22:26:59,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:26:59,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 22:26:59,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:26:59,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 22:26:59,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:26:59,945 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:26:59,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 7087 transitions, 372871 flow. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:26:59,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:26:59,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:26:59,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:27:53,698 INFO L130 PetriNetUnfolder]: 9180/17573 cut-off events. [2022-12-12 22:27:53,699 INFO L131 PetriNetUnfolder]: For 7711/7711 co-relation queries the response was YES. [2022-12-12 22:27:53,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476490 conditions, 17573 events. 9180/17573 cut-off events. For 7711/7711 co-relation queries the response was YES. Maximal size of possible extension queue 1057. Compared 156330 event pairs, 30 based on Foata normal form. 6/16019 useless extension candidates. Maximal degree in co-relation 365343. Up to 17572 conditions per place. [2022-12-12 22:27:53,999 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 6392 selfloop transitions, 619 changer transitions 70/7081 dead transitions. [2022-12-12 22:27:53,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 7081 transitions, 386721 flow [2022-12-12 22:27:54,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 22:27:54,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 22:27:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2022-12-12 22:27:54,000 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.27380952380952384 [2022-12-12 22:27:54,001 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 131 predicate places. [2022-12-12 22:27:54,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 7081 transitions, 386721 flow [2022-12-12 22:27:54,264 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 7011 transitions, 382869 flow [2022-12-12 22:27:54,265 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 7011 transitions, 382869 flow [2022-12-12 22:27:54,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:27:54,265 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:27:54,265 INFO L214 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] [2022-12-12 22:27:54,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-12 22:27:54,265 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:27:54,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:27:54,265 INFO L85 PathProgramCache]: Analyzing trace with hash 908918265, now seen corresponding path program 6 times [2022-12-12 22:27:54,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:27:54,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14049373] [2022-12-12 22:27:54,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:27:54,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:27:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:27:54,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:27:54,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:27:54,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14049373] [2022-12-12 22:27:54,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14049373] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:27:54,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:27:54,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 22:27:54,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662367970] [2022-12-12 22:27:54,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:27:54,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 22:27:54,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:27:54,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 22:27:54,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-12 22:27:54,600 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:27:54,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 7011 transitions, 382869 flow. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:27:54,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:27:54,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:27:54,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:28:55,119 INFO L130 PetriNetUnfolder]: 9167/17517 cut-off events. [2022-12-12 22:28:55,120 INFO L131 PetriNetUnfolder]: For 6238/6238 co-relation queries the response was YES. [2022-12-12 22:28:55,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492473 conditions, 17517 events. 9167/17517 cut-off events. For 6238/6238 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 155742 event pairs, 26 based on Foata normal form. 1/15958 useless extension candidates. Maximal degree in co-relation 391567. Up to 17516 conditions per place. [2022-12-12 22:28:55,291 INFO L137 encePairwiseOnDemand]: 32/42 looper letters, 6598 selfloop transitions, 408 changer transitions 21/7027 dead transitions. [2022-12-12 22:28:55,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 7027 transitions, 397802 flow [2022-12-12 22:28:55,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 22:28:55,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 22:28:55,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2022-12-12 22:28:55,293 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.30687830687830686 [2022-12-12 22:28:55,293 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 137 predicate places. [2022-12-12 22:28:55,293 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 7027 transitions, 397802 flow [2022-12-12 22:28:55,589 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 7006 transitions, 396605 flow [2022-12-12 22:28:55,589 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 7006 transitions, 396605 flow [2022-12-12 22:28:55,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:28:55,589 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:28:55,589 INFO L214 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] [2022-12-12 22:28:55,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-12 22:28:55,589 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:28:55,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:28:55,590 INFO L85 PathProgramCache]: Analyzing trace with hash 244869785, now seen corresponding path program 13 times [2022-12-12 22:28:55,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:28:55,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840999383] [2022-12-12 22:28:55,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:28:55,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:28:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:28:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:28:55,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:28:55,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840999383] [2022-12-12 22:28:55,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840999383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:28:55,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:28:55,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 22:28:55,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382943186] [2022-12-12 22:28:55,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:28:55,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 22:28:55,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:28:55,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 22:28:55,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:28:55,918 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:28:55,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 7006 transitions, 396605 flow. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:28:55,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:28:55,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:28:55,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:29:47,006 INFO L130 PetriNetUnfolder]: 9148/17469 cut-off events. [2022-12-12 22:29:47,006 INFO L131 PetriNetUnfolder]: For 7612/7612 co-relation queries the response was YES. [2022-12-12 22:29:47,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508589 conditions, 17469 events. 9148/17469 cut-off events. For 7612/7612 co-relation queries the response was YES. Maximal size of possible extension queue 1049. Compared 154952 event pairs, 26 based on Foata normal form. 6/15915 useless extension candidates. Maximal degree in co-relation 390475. Up to 17468 conditions per place. [2022-12-12 22:29:47,182 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 6311 selfloop transitions, 607 changer transitions 82/7000 dead transitions. [2022-12-12 22:29:47,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 7000 transitions, 410269 flow [2022-12-12 22:29:47,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 22:29:47,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 22:29:47,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2022-12-12 22:29:47,183 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2767857142857143 [2022-12-12 22:29:47,183 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 141 predicate places. [2022-12-12 22:29:47,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 7000 transitions, 410269 flow [2022-12-12 22:29:47,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 6918 transitions, 405405 flow [2022-12-12 22:29:47,459 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 6918 transitions, 405405 flow [2022-12-12 22:29:47,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:29:47,459 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:29:47,459 INFO L214 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] [2022-12-12 22:29:47,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-12 22:29:47,459 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:29:47,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:29:47,460 INFO L85 PathProgramCache]: Analyzing trace with hash -486709061, now seen corresponding path program 7 times [2022-12-12 22:29:47,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:29:47,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085310345] [2022-12-12 22:29:47,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:29:47,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:29:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:29:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:29:47,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:29:47,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085310345] [2022-12-12 22:29:47,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085310345] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:29:47,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:29:47,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 22:29:47,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391687967] [2022-12-12 22:29:47,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:29:47,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 22:29:47,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:29:47,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 22:29:47,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-12 22:29:47,818 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:29:47,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 6918 transitions, 405405 flow. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:29:47,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:29:47,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:29:47,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:30:45,282 INFO L130 PetriNetUnfolder]: 9094/17340 cut-off events. [2022-12-12 22:30:45,282 INFO L131 PetriNetUnfolder]: For 7554/7554 co-relation queries the response was YES. [2022-12-12 22:30:45,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522147 conditions, 17340 events. 9094/17340 cut-off events. For 7554/7554 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 153366 event pairs, 30 based on Foata normal form. 1/15781 useless extension candidates. Maximal degree in co-relation 402640. Up to 17339 conditions per place. [2022-12-12 22:30:45,479 INFO L137 encePairwiseOnDemand]: 32/42 looper letters, 6465 selfloop transitions, 427 changer transitions 25/6917 dead transitions. [2022-12-12 22:30:45,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 6917 transitions, 419181 flow [2022-12-12 22:30:45,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 22:30:45,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 22:30:45,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2022-12-12 22:30:45,481 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.32275132275132273 [2022-12-12 22:30:45,481 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 148 predicate places. [2022-12-12 22:30:45,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 6917 transitions, 419181 flow [2022-12-12 22:30:45,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 6892 transitions, 417669 flow [2022-12-12 22:30:45,793 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 6892 transitions, 417669 flow [2022-12-12 22:30:45,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:30:45,793 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:30:45,793 INFO L214 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] [2022-12-12 22:30:45,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-12 22:30:45,794 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:30:45,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:30:45,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1695888849, now seen corresponding path program 14 times [2022-12-12 22:30:45,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:30:45,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607377610] [2022-12-12 22:30:45,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:30:45,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:30:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:30:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:30:46,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:30:46,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607377610] [2022-12-12 22:30:46,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607377610] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:30:46,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:30:46,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 22:30:46,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319667173] [2022-12-12 22:30:46,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:30:46,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 22:30:46,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:30:46,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 22:30:46,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:30:46,149 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:30:46,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 6892 transitions, 417669 flow. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:30:46,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:30:46,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:30:46,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:31:53,059 INFO L130 PetriNetUnfolder]: 9210/17777 cut-off events. [2022-12-12 22:31:53,060 INFO L131 PetriNetUnfolder]: For 5955/5955 co-relation queries the response was YES. [2022-12-12 22:31:53,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553192 conditions, 17777 events. 9210/17777 cut-off events. For 5955/5955 co-relation queries the response was YES. Maximal size of possible extension queue 1074. Compared 160259 event pairs, 26 based on Foata normal form. 6/16227 useless extension candidates. Maximal degree in co-relation 439184. Up to 17776 conditions per place. [2022-12-12 22:31:53,403 INFO L137 encePairwiseOnDemand]: 33/42 looper letters, 6689 selfloop transitions, 495 changer transitions 82/7266 dead transitions. [2022-12-12 22:31:53,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 7266 transitions, 454983 flow [2022-12-12 22:31:53,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 22:31:53,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 22:31:53,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2022-12-12 22:31:53,404 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.31547619047619047 [2022-12-12 22:31:53,404 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 152 predicate places. [2022-12-12 22:31:53,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 7266 transitions, 454983 flow [2022-12-12 22:31:53,730 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 7184 transitions, 449791 flow [2022-12-12 22:31:53,730 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 7184 transitions, 449791 flow [2022-12-12 22:31:53,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:31:53,730 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:31:53,730 INFO L214 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] [2022-12-12 22:31:53,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-12 22:31:53,730 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:31:53,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:31:53,731 INFO L85 PathProgramCache]: Analyzing trace with hash -800970953, now seen corresponding path program 15 times [2022-12-12 22:31:53,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:31:53,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089136459] [2022-12-12 22:31:53,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:31:53,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:31:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:31:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:31:54,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:31:54,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089136459] [2022-12-12 22:31:54,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089136459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:31:54,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:31:54,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 22:31:54,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470994718] [2022-12-12 22:31:54,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:31:54,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 22:31:54,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:31:54,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 22:31:54,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-12 22:31:54,052 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:31:54,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 7184 transitions, 449791 flow. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:31:54,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:31:54,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:31:54,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:33:00,908 INFO L130 PetriNetUnfolder]: 9168/17651 cut-off events. [2022-12-12 22:33:00,908 INFO L131 PetriNetUnfolder]: For 7464/7464 co-relation queries the response was YES. [2022-12-12 22:33:00,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566896 conditions, 17651 events. 9168/17651 cut-off events. For 7464/7464 co-relation queries the response was YES. Maximal size of possible extension queue 1076. Compared 158240 event pairs, 26 based on Foata normal form. 6/16101 useless extension candidates. Maximal degree in co-relation 436952. Up to 17650 conditions per place. [2022-12-12 22:33:01,132 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 6495 selfloop transitions, 601 changer transitions 82/7178 dead transitions. [2022-12-12 22:33:01,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 7178 transitions, 463775 flow [2022-12-12 22:33:01,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 22:33:01,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 22:33:01,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2022-12-12 22:33:01,140 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2648809523809524 [2022-12-12 22:33:01,140 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 158 predicate places. [2022-12-12 22:33:01,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 7178 transitions, 463775 flow [2022-12-12 22:33:01,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 7096 transitions, 458455 flow [2022-12-12 22:33:01,587 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 7096 transitions, 458455 flow [2022-12-12 22:33:01,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:33:01,587 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:33:01,588 INFO L214 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] [2022-12-12 22:33:01,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-12 22:33:01,588 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:33:01,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:33:01,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1952219461, now seen corresponding path program 8 times [2022-12-12 22:33:01,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:33:01,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315700540] [2022-12-12 22:33:01,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:33:01,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:33:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:33:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:33:01,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:33:01,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315700540] [2022-12-12 22:33:01,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315700540] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:33:01,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:33:01,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 22:33:01,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778742187] [2022-12-12 22:33:01,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:33:01,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 22:33:01,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:33:01,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 22:33:01,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 22:33:01,939 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:33:01,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 7096 transitions, 458455 flow. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:33:01,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:33:01,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:33:01,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:34:20,443 INFO L130 PetriNetUnfolder]: 9431/18359 cut-off events. [2022-12-12 22:34:20,444 INFO L131 PetriNetUnfolder]: For 7738/7738 co-relation queries the response was YES. [2022-12-12 22:34:20,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608039 conditions, 18359 events. 9431/18359 cut-off events. For 7738/7738 co-relation queries the response was YES. Maximal size of possible extension queue 1136. Compared 167613 event pairs, 26 based on Foata normal form. 1/16756 useless extension candidates. Maximal degree in co-relation 465940. Up to 18358 conditions per place. [2022-12-12 22:34:20,658 INFO L137 encePairwiseOnDemand]: 32/42 looper letters, 7046 selfloop transitions, 501 changer transitions 13/7560 dead transitions. [2022-12-12 22:34:20,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 7560 transitions, 503646 flow [2022-12-12 22:34:20,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 22:34:20,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 22:34:20,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2022-12-12 22:34:20,659 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3412698412698413 [2022-12-12 22:34:20,660 INFO L295 CegarLoopForPetriNet]: 42 programPoint places, 163 predicate places. [2022-12-12 22:34:20,660 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 7560 transitions, 503646 flow [2022-12-12 22:34:21,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 7547 transitions, 502776 flow [2022-12-12 22:34:21,006 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 7547 transitions, 502776 flow [2022-12-12 22:34:21,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:34:21,006 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:34:21,006 INFO L214 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] [2022-12-12 22:34:21,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-12 22:34:21,006 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:34:21,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:34:21,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1596703141, now seen corresponding path program 9 times [2022-12-12 22:34:21,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:34:21,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291651453] [2022-12-12 22:34:21,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:34:21,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:34:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:34:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 22:34:21,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:34:21,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291651453] [2022-12-12 22:34:21,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291651453] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:34:21,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:34:21,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 22:34:21,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524961732] [2022-12-12 22:34:21,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:34:21,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 22:34:21,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:34:21,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 22:34:21,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-12 22:34:21,384 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-12 22:34:21,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 7547 transitions, 502776 flow. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:34:21,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:34:21,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-12 22:34:21,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-12 22:34:45,685 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 22:34:45,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 22:34:45,702 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 22:34:45,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-12 22:34:45,703 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 0/42 universal loopers) in iteration 33,while PetriNetUnfolder was constructing finite prefix that currently has 232979 conditions, 6835 events (4324/6834 cut-off events. For 3933/3933 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 49213 event pairs, 22 based on Foata normal form. 0/6919 useless extension candidates. Maximal degree in co-relation 230606. Up to 6833 conditions per place.). [2022-12-12 22:34:45,704 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 22:34:45,704 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 22:34:45,704 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 22:34:45,704 INFO L445 BasicCegarLoop]: Path program histogram: [15, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:34:45,706 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 22:34:45,706 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 22:34:45,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 10:34:45 BasicIcfg [2022-12-12 22:34:45,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 22:34:45,708 INFO L158 Benchmark]: Toolchain (without parser) took 843777.79ms. Allocated memory was 185.6MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 161.6MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2022-12-12 22:34:45,708 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 185.6MB. Free memory was 161.8MB in the beginning and 161.6MB in the end (delta: 152.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 22:34:45,709 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.51ms. Allocated memory is still 185.6MB. Free memory was 161.0MB in the beginning and 148.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 22:34:45,709 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.00ms. Allocated memory is still 185.6MB. Free memory was 148.4MB in the beginning and 145.3MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-12 22:34:45,709 INFO L158 Benchmark]: Boogie Preprocessor took 44.56ms. Allocated memory is still 185.6MB. Free memory was 145.3MB in the beginning and 142.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 22:34:45,709 INFO L158 Benchmark]: RCFGBuilder took 662.92ms. Allocated memory is still 185.6MB. Free memory was 142.7MB in the beginning and 109.7MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-12-12 22:34:45,709 INFO L158 Benchmark]: TraceAbstraction took 842765.22ms. Allocated memory was 185.6MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 108.6MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2022-12-12 22:34:45,710 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 185.6MB. Free memory was 161.8MB in the beginning and 161.6MB in the end (delta: 152.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 240.51ms. Allocated memory is still 185.6MB. Free memory was 161.0MB in the beginning and 148.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.00ms. Allocated memory is still 185.6MB. Free memory was 148.4MB in the beginning and 145.3MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.56ms. Allocated memory is still 185.6MB. Free memory was 145.3MB in the beginning and 142.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 662.92ms. Allocated memory is still 185.6MB. Free memory was 142.7MB in the beginning and 109.7MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * TraceAbstraction took 842765.22ms. Allocated memory was 185.6MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 108.6MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.9s, 439 PlacesBefore, 42 PlacesAfterwards, 470 TransitionsBefore, 42 TransitionsAfterwards, 17280 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 266 TrivialYvCompositions, 131 ConcurrentYvCompositions, 31 ChoiceCompositions, 429 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11567, independent: 11492, independent conditional: 11492, independent unconditional: 0, dependent: 75, dependent conditional: 75, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 11567, independent: 11492, independent conditional: 0, independent unconditional: 11492, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 11567, independent: 11492, independent conditional: 0, independent unconditional: 11492, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 11567, independent: 11492, independent conditional: 0, independent unconditional: 11492, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 10220, independent: 10175, independent conditional: 0, independent unconditional: 10175, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 10220, independent: 10175, independent conditional: 0, independent unconditional: 10175, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 45, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 63, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11567, independent: 1317, independent conditional: 0, independent unconditional: 1317, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 10220, unknown conditional: 0, unknown unconditional: 10220] , Statistics on independence cache: Total cache size (in pairs): 20762, Positive cache size: 20717, Positive conditional cache size: 0, Positive unconditional cache size: 20717, Negative cache size: 45, Negative conditional cache size: 0, Negative unconditional cache size: 45, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 0/42 universal loopers) in iteration 33,while PetriNetUnfolder was constructing finite prefix that currently has 232979 conditions, 6835 events (4324/6834 cut-off events. For 3933/3933 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 49213 event pairs, 22 based on Foata normal form. 0/6919 useless extension candidates. Maximal degree in co-relation 230606. Up to 6833 conditions per place.). - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 0/42 universal loopers) in iteration 33,while PetriNetUnfolder was constructing finite prefix that currently has 232979 conditions, 6835 events (4324/6834 cut-off events. For 3933/3933 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 49213 event pairs, 22 based on Foata normal form. 0/6919 useless extension candidates. Maximal degree in co-relation 230606. Up to 6833 conditions per place.). - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 0/42 universal loopers) in iteration 33,while PetriNetUnfolder was constructing finite prefix that currently has 232979 conditions, 6835 events (4324/6834 cut-off events. For 3933/3933 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 49213 event pairs, 22 based on Foata normal form. 0/6919 useless extension candidates. Maximal degree in co-relation 230606. Up to 6833 conditions per place.). - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 0/42 universal loopers) in iteration 33,while PetriNetUnfolder was constructing finite prefix that currently has 232979 conditions, 6835 events (4324/6834 cut-off events. For 3933/3933 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 49213 event pairs, 22 based on Foata normal form. 0/6919 useless extension candidates. Maximal degree in co-relation 230606. Up to 6833 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 581 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 4.9s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 842.6s, OverallIterations: 33, TraceHistogramMax: 1, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 809.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 15.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2171 SdHoareTripleChecker+Valid, 8.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2171 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 6.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14495 IncrementalHoareTripleChecker+Invalid, 14532 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 23 mSDtfsCounter, 14495 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 354 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=502776occurred in iteration=32, InterpolantAutomatonStates: 236, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.9s AutomataMinimizationTime, 32 MinimizatonAttempts, 53578 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 1152 NumberOfCodeBlocks, 1152 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 1119 ConstructedInterpolants, 0 QuantifiedInterpolants, 9629 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 33 InterpolantComputations, 33 PerfectInterpolantSequences, 165/165 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown