/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 19:25:40,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 19:25:40,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 19:25:40,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 19:25:40,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 19:25:40,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 19:25:40,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 19:25:40,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 19:25:40,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 19:25:40,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 19:25:40,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 19:25:40,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 19:25:40,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 19:25:40,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 19:25:40,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 19:25:40,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 19:25:40,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 19:25:40,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 19:25:40,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 19:25:40,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 19:25:40,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 19:25:40,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 19:25:40,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 19:25:40,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 19:25:40,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 19:25:40,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 19:25:40,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 19:25:40,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 19:25:40,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 19:25:40,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 19:25:40,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 19:25:40,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 19:25:40,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 19:25:40,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 19:25:40,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 19:25:40,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 19:25:40,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 19:25:40,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 19:25:40,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 19:25:40,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 19:25:40,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 19:25:40,340 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-NoLbe.epf [2022-12-11 19:25:40,360 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 19:25:40,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 19:25:40,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 19:25:40,361 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 19:25:40,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 19:25:40,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 19:25:40,363 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 19:25:40,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 19:25:40,363 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 19:25:40,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 19:25:40,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 19:25:40,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 19:25:40,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 19:25:40,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 19:25:40,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 19:25:40,364 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 19:25:40,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 19:25:40,365 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 19:25:40,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 19:25:40,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 19:25:40,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 19:25:40,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 19:25:40,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 19:25:40,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:25:40,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 19:25:40,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 19:25:40,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 19:25:40,366 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 19:25:40,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 19:25:40,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 19:25:40,366 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 19:25:40,366 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 19:25:40,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 19:25:40,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 19:25:40,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 19:25:40,718 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 19:25:40,719 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 19:25:40,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2022-12-11 19:25:41,721 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 19:25:41,941 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 19:25:41,942 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2022-12-11 19:25:41,948 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59e804277/9eec90e9218f4b14aaf552621aea2226/FLAGdb1436dcc [2022-12-11 19:25:41,959 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59e804277/9eec90e9218f4b14aaf552621aea2226 [2022-12-11 19:25:41,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 19:25:41,965 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 19:25:41,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 19:25:41,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 19:25:41,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 19:25:41,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:25:41" (1/1) ... [2022-12-11 19:25:41,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@628f536f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:25:41, skipping insertion in model container [2022-12-11 19:25:41,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:25:41" (1/1) ... [2022-12-11 19:25:41,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 19:25:42,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 19:25:42,151 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-nzb-file-subst.wvr.c[6501,6514] [2022-12-11 19:25:42,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:25:42,166 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 19:25:42,212 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-nzb-file-subst.wvr.c[6501,6514] [2022-12-11 19:25:42,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:25:42,242 INFO L208 MainTranslator]: Completed translation [2022-12-11 19:25:42,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:25:42 WrapperNode [2022-12-11 19:25:42,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 19:25:42,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 19:25:42,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 19:25:42,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 19:25:42,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:25:42" (1/1) ... [2022-12-11 19:25:42,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:25:42" (1/1) ... [2022-12-11 19:25:42,314 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 574 [2022-12-11 19:25:42,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 19:25:42,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 19:25:42,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 19:25:42,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 19:25:42,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:25:42" (1/1) ... [2022-12-11 19:25:42,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:25:42" (1/1) ... [2022-12-11 19:25:42,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:25:42" (1/1) ... [2022-12-11 19:25:42,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:25:42" (1/1) ... [2022-12-11 19:25:42,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:25:42" (1/1) ... [2022-12-11 19:25:42,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:25:42" (1/1) ... [2022-12-11 19:25:42,373 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:25:42" (1/1) ... [2022-12-11 19:25:42,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:25:42" (1/1) ... [2022-12-11 19:25:42,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 19:25:42,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 19:25:42,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 19:25:42,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 19:25:42,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:25:42" (1/1) ... [2022-12-11 19:25:42,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:25:42,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:25:42,432 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) [2022-12-11 19:25:42,458 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 [2022-12-11 19:25:42,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 19:25:42,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 19:25:42,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 19:25:42,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 19:25:42,476 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 19:25:42,476 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 19:25:42,476 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 19:25:42,476 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 19:25:42,477 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-11 19:25:42,477 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-11 19:25:42,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 19:25:42,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-11 19:25:42,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 19:25:42,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 19:25:42,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 19:25:42,479 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 19:25:42,649 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 19:25:42,651 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 19:25:43,397 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 19:25:43,421 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 19:25:43,422 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-11 19:25:43,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:25:43 BoogieIcfgContainer [2022-12-11 19:25:43,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 19:25:43,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 19:25:43,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 19:25:43,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 19:25:43,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 07:25:41" (1/3) ... [2022-12-11 19:25:43,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@976ebb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:25:43, skipping insertion in model container [2022-12-11 19:25:43,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:25:42" (2/3) ... [2022-12-11 19:25:43,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@976ebb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:25:43, skipping insertion in model container [2022-12-11 19:25:43,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:25:43" (3/3) ... [2022-12-11 19:25:43,438 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2022-12-11 19:25:43,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 19:25:43,452 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 19:25:43,452 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 19:25:43,589 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-11 19:25:43,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 627 places, 690 transitions, 1404 flow [2022-12-11 19:25:43,916 INFO L130 PetriNetUnfolder]: 73/687 cut-off events. [2022-12-11 19:25:43,916 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 19:25:43,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 687 events. 73/687 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2360 event pairs, 0 based on Foata normal form. 0/613 useless extension candidates. Maximal degree in co-relation 507. Up to 2 conditions per place. [2022-12-11 19:25:43,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 627 places, 690 transitions, 1404 flow [2022-12-11 19:25:43,954 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 614 places, 677 transitions, 1372 flow [2022-12-11 19:25:43,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 19:25:43,974 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;@7319b9c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 19:25:43,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-11 19:25:44,136 INFO L130 PetriNetUnfolder]: 73/676 cut-off events. [2022-12-11 19:25:44,136 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 19:25:44,137 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:25:44,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:25:44,139 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)] === [2022-12-11 19:25:44,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:25:44,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1807096790, now seen corresponding path program 1 times [2022-12-11 19:25:44,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:25:44,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993719166] [2022-12-11 19:25:44,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:25:44,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:25:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:25:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:25:44,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:25:44,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993719166] [2022-12-11 19:25:44,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993719166] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:25:44,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:25:44,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:25:44,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100556929] [2022-12-11 19:25:44,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:25:44,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:25:44,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:25:44,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:25:44,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:25:44,768 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 690 [2022-12-11 19:25:44,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 677 transitions, 1372 flow. Second operand has 3 states, 3 states have (on average 636.0) internal successors, (1908), 3 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:44,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:25:44,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 690 [2022-12-11 19:25:44,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:25:45,389 INFO L130 PetriNetUnfolder]: 166/1945 cut-off events. [2022-12-11 19:25:45,389 INFO L131 PetriNetUnfolder]: For 111/111 co-relation queries the response was YES. [2022-12-11 19:25:45,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2177 conditions, 1945 events. 166/1945 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 15126 event pairs, 47 based on Foata normal form. 534/2258 useless extension candidates. Maximal degree in co-relation 1724. Up to 110 conditions per place. [2022-12-11 19:25:45,443 INFO L137 encePairwiseOnDemand]: 649/690 looper letters, 33 selfloop transitions, 2 changer transitions 7/655 dead transitions. [2022-12-11 19:25:45,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 655 transitions, 1413 flow [2022-12-11 19:25:45,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:25:45,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:25:45,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1998 transitions. [2022-12-11 19:25:45,463 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9652173913043478 [2022-12-11 19:25:45,465 INFO L175 Difference]: Start difference. First operand has 614 places, 677 transitions, 1372 flow. Second operand 3 states and 1998 transitions. [2022-12-11 19:25:45,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 655 transitions, 1413 flow [2022-12-11 19:25:45,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 655 transitions, 1391 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-11 19:25:45,488 INFO L231 Difference]: Finished difference. Result has 612 places, 635 transitions, 1292 flow [2022-12-11 19:25:45,491 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1292, PETRI_PLACES=612, PETRI_TRANSITIONS=635} [2022-12-11 19:25:45,496 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, -2 predicate places. [2022-12-11 19:25:45,496 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 635 transitions, 1292 flow [2022-12-11 19:25:45,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 636.0) internal successors, (1908), 3 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:45,497 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:25:45,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:25:45,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 19:25:45,498 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)] === [2022-12-11 19:25:45,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:25:45,500 INFO L85 PathProgramCache]: Analyzing trace with hash 176808056, now seen corresponding path program 2 times [2022-12-11 19:25:45,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:25:45,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175715835] [2022-12-11 19:25:45,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:25:45,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:25:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:25:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:25:45,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:25:45,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175715835] [2022-12-11 19:25:45,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175715835] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:25:45,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:25:45,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:25:45,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137727935] [2022-12-11 19:25:45,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:25:45,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:25:45,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:25:45,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:25:45,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:25:45,693 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 690 [2022-12-11 19:25:45,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 635 transitions, 1292 flow. Second operand has 3 states, 3 states have (on average 636.0) internal successors, (1908), 3 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:45,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:25:45,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 690 [2022-12-11 19:25:45,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:25:46,207 INFO L130 PetriNetUnfolder]: 164/1951 cut-off events. [2022-12-11 19:25:46,208 INFO L131 PetriNetUnfolder]: For 104/107 co-relation queries the response was YES. [2022-12-11 19:25:46,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2204 conditions, 1951 events. 164/1951 cut-off events. For 104/107 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 15293 event pairs, 54 based on Foata normal form. 4/1782 useless extension candidates. Maximal degree in co-relation 1878. Up to 132 conditions per place. [2022-12-11 19:25:46,254 INFO L137 encePairwiseOnDemand]: 684/690 looper letters, 33 selfloop transitions, 4 changer transitions 0/650 dead transitions. [2022-12-11 19:25:46,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 650 transitions, 1405 flow [2022-12-11 19:25:46,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:25:46,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:25:46,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1933 transitions. [2022-12-11 19:25:46,259 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9338164251207729 [2022-12-11 19:25:46,259 INFO L175 Difference]: Start difference. First operand has 612 places, 635 transitions, 1292 flow. Second operand 3 states and 1933 transitions. [2022-12-11 19:25:46,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 650 transitions, 1405 flow [2022-12-11 19:25:46,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 650 transitions, 1403 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:25:46,271 INFO L231 Difference]: Finished difference. Result has 608 places, 637 transitions, 1322 flow [2022-12-11 19:25:46,272 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1322, PETRI_PLACES=608, PETRI_TRANSITIONS=637} [2022-12-11 19:25:46,273 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, -6 predicate places. [2022-12-11 19:25:46,273 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 637 transitions, 1322 flow [2022-12-11 19:25:46,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 636.0) internal successors, (1908), 3 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:46,275 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:25:46,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:25:46,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 19:25:46,275 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)] === [2022-12-11 19:25:46,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:25:46,276 INFO L85 PathProgramCache]: Analyzing trace with hash -999241623, now seen corresponding path program 1 times [2022-12-11 19:25:46,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:25:46,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296784527] [2022-12-11 19:25:46,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:25:46,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:25:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:25:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:25:46,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:25:46,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296784527] [2022-12-11 19:25:46,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296784527] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:25:46,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:25:46,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:25:46,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493009908] [2022-12-11 19:25:46,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:25:46,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:25:46,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:25:46,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:25:46,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:25:46,417 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 690 [2022-12-11 19:25:46,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 637 transitions, 1322 flow. Second operand has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:46,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:25:46,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 690 [2022-12-11 19:25:46,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:25:47,139 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([2153] thread3EXIT-->L161-2: Formula: (and (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem96#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread3Thread1of1ForFork0_thidvar0_4) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {ULTIMATE.start_main_#t~mem96#1=|v_ULTIMATE.start_main_#t~mem96#1_5|, thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem96#1=|v_ULTIMATE.start_main_#t~mem96#1_5|, thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[][623], [452#L161-2true, 637#(= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0), 642#(not (= (* 256 (div ~is_null_1~0 256)) ~is_null_1~0)), Black: 632#(not (= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0)), Black: 635#true]) [2022-12-11 19:25:47,140 INFO L382 tUnfolder$Statistics]: this new event has 220 ancestors and is not cut-off event [2022-12-11 19:25:47,140 INFO L385 tUnfolder$Statistics]: existing Event has 227 ancestors and is not cut-off event [2022-12-11 19:25:47,140 INFO L385 tUnfolder$Statistics]: existing Event has 227 ancestors and is not cut-off event [2022-12-11 19:25:47,140 INFO L385 tUnfolder$Statistics]: existing Event has 222 ancestors and is not cut-off event [2022-12-11 19:25:47,140 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([2153] thread3EXIT-->L161-2: Formula: (and (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem96#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread3Thread1of1ForFork0_thidvar0_4) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {ULTIMATE.start_main_#t~mem96#1=|v_ULTIMATE.start_main_#t~mem96#1_5|, thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem96#1=|v_ULTIMATE.start_main_#t~mem96#1_5|, thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[][614], [632#(not (= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0)), 452#L161-2true, 640#true, Black: 630#true, 635#true, Black: 637#(= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0)]) [2022-12-11 19:25:47,141 INFO L382 tUnfolder$Statistics]: this new event has 220 ancestors and is not cut-off event [2022-12-11 19:25:47,141 INFO L385 tUnfolder$Statistics]: existing Event has 227 ancestors and is not cut-off event [2022-12-11 19:25:47,141 INFO L385 tUnfolder$Statistics]: existing Event has 225 ancestors and is not cut-off event [2022-12-11 19:25:47,141 INFO L385 tUnfolder$Statistics]: existing Event has 220 ancestors and is not cut-off event [2022-12-11 19:25:47,145 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([2153] thread3EXIT-->L161-2: Formula: (and (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem96#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread3Thread1of1ForFork0_thidvar0_4) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {ULTIMATE.start_main_#t~mem96#1=|v_ULTIMATE.start_main_#t~mem96#1_5|, thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem96#1=|v_ULTIMATE.start_main_#t~mem96#1_5|, thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[][623], [632#(not (= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0)), 452#L161-2true, 642#(not (= (* 256 (div ~is_null_1~0 256)) ~is_null_1~0)), Black: 630#true, 635#true, Black: 637#(= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0)]) [2022-12-11 19:25:47,145 INFO L382 tUnfolder$Statistics]: this new event has 222 ancestors and is not cut-off event [2022-12-11 19:25:47,145 INFO L385 tUnfolder$Statistics]: existing Event has 229 ancestors and is not cut-off event [2022-12-11 19:25:47,145 INFO L385 tUnfolder$Statistics]: existing Event has 222 ancestors and is not cut-off event [2022-12-11 19:25:47,145 INFO L385 tUnfolder$Statistics]: existing Event has 227 ancestors and is not cut-off event [2022-12-11 19:25:47,165 INFO L130 PetriNetUnfolder]: 326/3451 cut-off events. [2022-12-11 19:25:47,166 INFO L131 PetriNetUnfolder]: For 210/270 co-relation queries the response was YES. [2022-12-11 19:25:47,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3965 conditions, 3451 events. 326/3451 cut-off events. For 210/270 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 33369 event pairs, 107 based on Foata normal form. 4/3098 useless extension candidates. Maximal degree in co-relation 3454. Up to 224 conditions per place. [2022-12-11 19:25:47,219 INFO L137 encePairwiseOnDemand]: 686/690 looper letters, 35 selfloop transitions, 3 changer transitions 0/653 dead transitions. [2022-12-11 19:25:47,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 653 transitions, 1445 flow [2022-12-11 19:25:47,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:25:47,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:25:47,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1933 transitions. [2022-12-11 19:25:47,223 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9338164251207729 [2022-12-11 19:25:47,224 INFO L175 Difference]: Start difference. First operand has 608 places, 637 transitions, 1322 flow. Second operand 3 states and 1933 transitions. [2022-12-11 19:25:47,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 653 transitions, 1445 flow [2022-12-11 19:25:47,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 653 transitions, 1429 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-11 19:25:47,237 INFO L231 Difference]: Finished difference. Result has 610 places, 640 transitions, 1346 flow [2022-12-11 19:25:47,238 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1346, PETRI_PLACES=610, PETRI_TRANSITIONS=640} [2022-12-11 19:25:47,239 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, -4 predicate places. [2022-12-11 19:25:47,239 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 640 transitions, 1346 flow [2022-12-11 19:25:47,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:47,240 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:25:47,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:25:47,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 19:25:47,241 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)] === [2022-12-11 19:25:47,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:25:47,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1290803923, now seen corresponding path program 2 times [2022-12-11 19:25:47,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:25:47,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384645902] [2022-12-11 19:25:47,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:25:47,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:25:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:25:47,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:25:47,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:25:47,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384645902] [2022-12-11 19:25:47,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384645902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:25:47,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:25:47,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:25:47,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804199904] [2022-12-11 19:25:47,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:25:47,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:25:47,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:25:47,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:25:47,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:25:47,352 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 690 [2022-12-11 19:25:47,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 640 transitions, 1346 flow. Second operand has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:47,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:25:47,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 690 [2022-12-11 19:25:47,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:25:48,077 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([2153] thread3EXIT-->L161-2: Formula: (and (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem96#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread3Thread1of1ForFork0_thidvar0_4) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {ULTIMATE.start_main_#t~mem96#1=|v_ULTIMATE.start_main_#t~mem96#1_5|, thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem96#1=|v_ULTIMATE.start_main_#t~mem96#1_5|, thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[][617], [632#(not (= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0)), 452#L161-2true, Black: 642#(not (= (* 256 (div ~is_null_1~0 256)) ~is_null_1~0)), 640#true, 647#(= (* 256 (div ~is_null_1~0 256)) ~is_null_1~0), Black: 630#true, Black: 637#(= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0)]) [2022-12-11 19:25:48,077 INFO L382 tUnfolder$Statistics]: this new event has 220 ancestors and is not cut-off event [2022-12-11 19:25:48,077 INFO L385 tUnfolder$Statistics]: existing Event has 220 ancestors and is not cut-off event [2022-12-11 19:25:48,077 INFO L385 tUnfolder$Statistics]: existing Event has 227 ancestors and is not cut-off event [2022-12-11 19:25:48,077 INFO L385 tUnfolder$Statistics]: existing Event has 225 ancestors and is not cut-off event [2022-12-11 19:25:48,080 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([2153] thread3EXIT-->L161-2: Formula: (and (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem96#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread3Thread1of1ForFork0_thidvar0_4) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {ULTIMATE.start_main_#t~mem96#1=|v_ULTIMATE.start_main_#t~mem96#1_5|, thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem96#1=|v_ULTIMATE.start_main_#t~mem96#1_5|, thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[][633], [452#L161-2true, Black: 640#true, 645#true, 642#(not (= (* 256 (div ~is_null_1~0 256)) ~is_null_1~0)), Black: 632#(not (= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0)), Black: 635#true]) [2022-12-11 19:25:48,080 INFO L382 tUnfolder$Statistics]: this new event has 222 ancestors and is not cut-off event [2022-12-11 19:25:48,080 INFO L385 tUnfolder$Statistics]: existing Event has 229 ancestors and is not cut-off event [2022-12-11 19:25:48,080 INFO L385 tUnfolder$Statistics]: existing Event has 227 ancestors and is not cut-off event [2022-12-11 19:25:48,080 INFO L385 tUnfolder$Statistics]: existing Event has 222 ancestors and is not cut-off event [2022-12-11 19:25:48,097 INFO L130 PetriNetUnfolder]: 282/3066 cut-off events. [2022-12-11 19:25:48,097 INFO L131 PetriNetUnfolder]: For 355/428 co-relation queries the response was YES. [2022-12-11 19:25:48,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3616 conditions, 3066 events. 282/3066 cut-off events. For 355/428 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 28802 event pairs, 99 based on Foata normal form. 9/2799 useless extension candidates. Maximal degree in co-relation 3004. Up to 219 conditions per place. [2022-12-11 19:25:48,147 INFO L137 encePairwiseOnDemand]: 684/690 looper letters, 36 selfloop transitions, 5 changer transitions 0/656 dead transitions. [2022-12-11 19:25:48,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 656 transitions, 1478 flow [2022-12-11 19:25:48,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:25:48,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:25:48,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1933 transitions. [2022-12-11 19:25:48,152 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9338164251207729 [2022-12-11 19:25:48,152 INFO L175 Difference]: Start difference. First operand has 610 places, 640 transitions, 1346 flow. Second operand 3 states and 1933 transitions. [2022-12-11 19:25:48,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 656 transitions, 1478 flow [2022-12-11 19:25:48,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 656 transitions, 1475 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:25:48,165 INFO L231 Difference]: Finished difference. Result has 613 places, 643 transitions, 1394 flow [2022-12-11 19:25:48,166 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1394, PETRI_PLACES=613, PETRI_TRANSITIONS=643} [2022-12-11 19:25:48,167 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, -1 predicate places. [2022-12-11 19:25:48,167 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 643 transitions, 1394 flow [2022-12-11 19:25:48,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:48,169 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:25:48,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:25:48,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 19:25:48,172 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)] === [2022-12-11 19:25:48,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:25:48,176 INFO L85 PathProgramCache]: Analyzing trace with hash 535207241, now seen corresponding path program 1 times [2022-12-11 19:25:48,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:25:48,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917014615] [2022-12-11 19:25:48,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:25:48,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:25:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:25:48,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:25:48,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:25:48,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917014615] [2022-12-11 19:25:48,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917014615] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:25:48,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:25:48,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:25:48,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976633441] [2022-12-11 19:25:48,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:25:48,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:25:48,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:25:48,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:25:48,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:25:48,263 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 690 [2022-12-11 19:25:48,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 643 transitions, 1394 flow. Second operand has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:48,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:25:48,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 690 [2022-12-11 19:25:48,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:25:49,300 INFO L130 PetriNetUnfolder]: 556/5313 cut-off events. [2022-12-11 19:25:49,301 INFO L131 PetriNetUnfolder]: For 609/712 co-relation queries the response was YES. [2022-12-11 19:25:49,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6213 conditions, 5313 events. 556/5313 cut-off events. For 609/712 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 56296 event pairs, 217 based on Foata normal form. 11/4785 useless extension candidates. Maximal degree in co-relation 4383. Up to 410 conditions per place. [2022-12-11 19:25:49,361 INFO L137 encePairwiseOnDemand]: 686/690 looper letters, 34 selfloop transitions, 4 changer transitions 0/657 dead transitions. [2022-12-11 19:25:49,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 657 transitions, 1512 flow [2022-12-11 19:25:49,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:25:49,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:25:49,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1932 transitions. [2022-12-11 19:25:49,366 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-12-11 19:25:49,367 INFO L175 Difference]: Start difference. First operand has 613 places, 643 transitions, 1394 flow. Second operand 3 states and 1932 transitions. [2022-12-11 19:25:49,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 657 transitions, 1512 flow [2022-12-11 19:25:49,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 657 transitions, 1494 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-11 19:25:49,379 INFO L231 Difference]: Finished difference. Result has 615 places, 645 transitions, 1418 flow [2022-12-11 19:25:49,379 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1418, PETRI_PLACES=615, PETRI_TRANSITIONS=645} [2022-12-11 19:25:49,382 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 1 predicate places. [2022-12-11 19:25:49,382 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 645 transitions, 1418 flow [2022-12-11 19:25:49,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:49,384 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:25:49,384 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:25:49,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 19:25:49,384 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)] === [2022-12-11 19:25:49,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:25:49,385 INFO L85 PathProgramCache]: Analyzing trace with hash -24253473, now seen corresponding path program 2 times [2022-12-11 19:25:49,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:25:49,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324451374] [2022-12-11 19:25:49,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:25:49,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:25:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:25:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:25:49,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:25:49,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324451374] [2022-12-11 19:25:49,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324451374] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:25:49,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:25:49,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:25:49,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735172262] [2022-12-11 19:25:49,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:25:49,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:25:49,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:25:49,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:25:49,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:25:49,511 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 690 [2022-12-11 19:25:49,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 645 transitions, 1418 flow. Second operand has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:49,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:25:49,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 690 [2022-12-11 19:25:49,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:25:50,773 INFO L130 PetriNetUnfolder]: 603/6118 cut-off events. [2022-12-11 19:25:50,773 INFO L131 PetriNetUnfolder]: For 975/1082 co-relation queries the response was YES. [2022-12-11 19:25:50,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7083 conditions, 6118 events. 603/6118 cut-off events. For 975/1082 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 66574 event pairs, 219 based on Foata normal form. 13/5486 useless extension candidates. Maximal degree in co-relation 5480. Up to 422 conditions per place. [2022-12-11 19:25:50,840 INFO L137 encePairwiseOnDemand]: 684/690 looper letters, 34 selfloop transitions, 6 changer transitions 0/657 dead transitions. [2022-12-11 19:25:50,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 657 transitions, 1532 flow [2022-12-11 19:25:50,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:25:50,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:25:50,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1932 transitions. [2022-12-11 19:25:50,845 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-12-11 19:25:50,845 INFO L175 Difference]: Start difference. First operand has 615 places, 645 transitions, 1418 flow. Second operand 3 states and 1932 transitions. [2022-12-11 19:25:50,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 657 transitions, 1532 flow [2022-12-11 19:25:50,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 657 transitions, 1528 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:25:50,859 INFO L231 Difference]: Finished difference. Result has 618 places, 645 transitions, 1456 flow [2022-12-11 19:25:50,859 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1456, PETRI_PLACES=618, PETRI_TRANSITIONS=645} [2022-12-11 19:25:50,863 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 4 predicate places. [2022-12-11 19:25:50,864 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 645 transitions, 1456 flow [2022-12-11 19:25:50,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:50,867 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:25:50,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:25:50,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 19:25:50,868 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)] === [2022-12-11 19:25:50,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:25:50,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1602424807, now seen corresponding path program 1 times [2022-12-11 19:25:50,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:25:50,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827920835] [2022-12-11 19:25:50,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:25:50,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:25:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:25:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:25:51,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:25:51,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827920835] [2022-12-11 19:25:51,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827920835] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:25:51,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:25:51,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 19:25:51,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975478170] [2022-12-11 19:25:51,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:25:51,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 19:25:51,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:25:51,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 19:25:51,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-11 19:25:51,053 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 613 out of 690 [2022-12-11 19:25:51,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 645 transitions, 1456 flow. Second operand has 5 states, 5 states have (on average 618.4) internal successors, (3092), 5 states have internal predecessors, (3092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:51,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:25:51,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 613 of 690 [2022-12-11 19:25:51,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:25:51,289 INFO L130 PetriNetUnfolder]: 36/864 cut-off events. [2022-12-11 19:25:51,289 INFO L131 PetriNetUnfolder]: For 142/181 co-relation queries the response was YES. [2022-12-11 19:25:51,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 864 events. 36/864 cut-off events. For 142/181 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4318 event pairs, 0 based on Foata normal form. 0/800 useless extension candidates. Maximal degree in co-relation 805. Up to 55 conditions per place. [2022-12-11 19:25:51,308 INFO L137 encePairwiseOnDemand]: 675/690 looper letters, 39 selfloop transitions, 12 changer transitions 0/657 dead transitions. [2022-12-11 19:25:51,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 657 transitions, 1582 flow [2022-12-11 19:25:51,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 19:25:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 19:25:51,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3119 transitions. [2022-12-11 19:25:51,314 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9040579710144927 [2022-12-11 19:25:51,314 INFO L175 Difference]: Start difference. First operand has 618 places, 645 transitions, 1456 flow. Second operand 5 states and 3119 transitions. [2022-12-11 19:25:51,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 657 transitions, 1582 flow [2022-12-11 19:25:51,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 620 places, 657 transitions, 1566 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-11 19:25:51,325 INFO L231 Difference]: Finished difference. Result has 621 places, 648 transitions, 1488 flow [2022-12-11 19:25:51,326 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1440, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1488, PETRI_PLACES=621, PETRI_TRANSITIONS=648} [2022-12-11 19:25:51,326 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 7 predicate places. [2022-12-11 19:25:51,326 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 648 transitions, 1488 flow [2022-12-11 19:25:51,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 618.4) internal successors, (3092), 5 states have internal predecessors, (3092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:51,329 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:25:51,329 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:25:51,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 19:25:51,329 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)] === [2022-12-11 19:25:51,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:25:51,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1080969312, now seen corresponding path program 1 times [2022-12-11 19:25:51,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:25:51,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009510307] [2022-12-11 19:25:51,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:25:51,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:25:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:25:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:25:51,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:25:51,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009510307] [2022-12-11 19:25:51,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009510307] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:25:51,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776449259] [2022-12-11 19:25:51,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:25:51,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:25:51,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:25:51,555 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:25:51,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 19:25:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:25:51,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-11 19:25:51,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:25:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:25:51,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:25:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:25:52,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776449259] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:25:52,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:25:52,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-12-11 19:25:52,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520785321] [2022-12-11 19:25:52,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:25:52,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-11 19:25:52,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:25:52,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-11 19:25:52,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-12-11 19:25:52,010 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 610 out of 690 [2022-12-11 19:25:52,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 648 transitions, 1488 flow. Second operand has 15 states, 15 states have (on average 614.0666666666667) internal successors, (9211), 15 states have internal predecessors, (9211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:52,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:25:52,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 610 of 690 [2022-12-11 19:25:52,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:25:52,418 INFO L130 PetriNetUnfolder]: 36/888 cut-off events. [2022-12-11 19:25:52,419 INFO L131 PetriNetUnfolder]: For 129/166 co-relation queries the response was YES. [2022-12-11 19:25:52,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1098 conditions, 888 events. 36/888 cut-off events. For 129/166 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4289 event pairs, 0 based on Foata normal form. 6/833 useless extension candidates. Maximal degree in co-relation 829. Up to 46 conditions per place. [2022-12-11 19:25:52,438 INFO L137 encePairwiseOnDemand]: 666/690 looper letters, 42 selfloop transitions, 33 changer transitions 0/678 dead transitions. [2022-12-11 19:25:52,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 678 transitions, 1704 flow [2022-12-11 19:25:52,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 19:25:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 19:25:52,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 6791 transitions. [2022-12-11 19:25:52,451 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.894729907773386 [2022-12-11 19:25:52,451 INFO L175 Difference]: Start difference. First operand has 621 places, 648 transitions, 1488 flow. Second operand 11 states and 6791 transitions. [2022-12-11 19:25:52,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 678 transitions, 1704 flow [2022-12-11 19:25:52,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 678 transitions, 1686 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-11 19:25:52,463 INFO L231 Difference]: Finished difference. Result has 631 places, 666 transitions, 1637 flow [2022-12-11 19:25:52,464 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1637, PETRI_PLACES=631, PETRI_TRANSITIONS=666} [2022-12-11 19:25:52,465 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 17 predicate places. [2022-12-11 19:25:52,466 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 666 transitions, 1637 flow [2022-12-11 19:25:52,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 614.0666666666667) internal successors, (9211), 15 states have internal predecessors, (9211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:52,471 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:25:52,472 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:25:52,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-11 19:25:52,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:25:52,681 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)] === [2022-12-11 19:25:52,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:25:52,681 INFO L85 PathProgramCache]: Analyzing trace with hash 288125630, now seen corresponding path program 2 times [2022-12-11 19:25:52,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:25:52,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000336363] [2022-12-11 19:25:52,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:25:52,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:25:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:25:53,028 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-11 19:25:53,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:25:53,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000336363] [2022-12-11 19:25:53,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000336363] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:25:53,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544395246] [2022-12-11 19:25:53,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 19:25:53,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:25:53,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:25:53,031 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:25:53,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 19:25:53,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-11 19:25:53,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:25:53,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-11 19:25:53,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:25:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-12-11 19:25:53,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 19:25:53,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544395246] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:25:53,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 19:25:53,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-12-11 19:25:53,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190363880] [2022-12-11 19:25:53,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:25:53,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 19:25:53,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:25:53,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 19:25:53,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-12-11 19:25:53,379 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 589 out of 690 [2022-12-11 19:25:53,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 666 transitions, 1637 flow. Second operand has 8 states, 8 states have (on average 594.5) internal successors, (4756), 8 states have internal predecessors, (4756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:53,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:25:53,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 589 of 690 [2022-12-11 19:25:53,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:25:54,846 INFO L130 PetriNetUnfolder]: 1439/5528 cut-off events. [2022-12-11 19:25:54,846 INFO L131 PetriNetUnfolder]: For 830/903 co-relation queries the response was YES. [2022-12-11 19:25:54,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8128 conditions, 5528 events. 1439/5528 cut-off events. For 830/903 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 57733 event pairs, 1048 based on Foata normal form. 2/5010 useless extension candidates. Maximal degree in co-relation 7802. Up to 1881 conditions per place. [2022-12-11 19:25:54,951 INFO L137 encePairwiseOnDemand]: 681/690 looper letters, 92 selfloop transitions, 12 changer transitions 13/727 dead transitions. [2022-12-11 19:25:54,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 727 transitions, 2011 flow [2022-12-11 19:25:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 19:25:54,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 19:25:54,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 7775 transitions. [2022-12-11 19:25:54,967 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.866778149386845 [2022-12-11 19:25:54,967 INFO L175 Difference]: Start difference. First operand has 631 places, 666 transitions, 1637 flow. Second operand 13 states and 7775 transitions. [2022-12-11 19:25:54,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 727 transitions, 2011 flow [2022-12-11 19:25:54,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 640 places, 727 transitions, 1986 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-11 19:25:54,980 INFO L231 Difference]: Finished difference. Result has 650 places, 677 transitions, 1701 flow [2022-12-11 19:25:54,981 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1701, PETRI_PLACES=650, PETRI_TRANSITIONS=677} [2022-12-11 19:25:54,982 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 36 predicate places. [2022-12-11 19:25:54,982 INFO L495 AbstractCegarLoop]: Abstraction has has 650 places, 677 transitions, 1701 flow [2022-12-11 19:25:54,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 594.5) internal successors, (4756), 8 states have internal predecessors, (4756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:54,985 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:25:54,985 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:25:54,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-11 19:25:55,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-11 19:25:55,191 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)] === [2022-12-11 19:25:55,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:25:55,192 INFO L85 PathProgramCache]: Analyzing trace with hash 291935972, now seen corresponding path program 1 times [2022-12-11 19:25:55,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:25:55,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542389179] [2022-12-11 19:25:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:25:55,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:25:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:25:55,536 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-11 19:25:55,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:25:55,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542389179] [2022-12-11 19:25:55,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542389179] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:25:55,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073298298] [2022-12-11 19:25:55,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:25:55,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:25:55,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:25:55,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:25:55,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 19:25:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:25:55,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-11 19:25:55,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:25:55,867 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-11 19:25:55,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:25:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-11 19:25:55,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073298298] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:25:55,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:25:55,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-12-11 19:25:55,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051686591] [2022-12-11 19:25:55,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:25:55,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-11 19:25:55,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:25:55,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-11 19:25:55,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-12-11 19:25:55,976 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 610 out of 690 [2022-12-11 19:25:55,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 650 places, 677 transitions, 1701 flow. Second operand has 22 states, 22 states have (on average 613.6818181818181) internal successors, (13501), 22 states have internal predecessors, (13501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:55,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:25:55,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 610 of 690 [2022-12-11 19:25:55,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:25:56,459 INFO L130 PetriNetUnfolder]: 39/952 cut-off events. [2022-12-11 19:25:56,459 INFO L131 PetriNetUnfolder]: For 197/235 co-relation queries the response was YES. [2022-12-11 19:25:56,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 952 events. 39/952 cut-off events. For 197/235 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4589 event pairs, 0 based on Foata normal form. 6/896 useless extension candidates. Maximal degree in co-relation 1325. Up to 48 conditions per place. [2022-12-11 19:25:56,479 INFO L137 encePairwiseOnDemand]: 666/690 looper letters, 54 selfloop transitions, 51 changer transitions 0/719 dead transitions. [2022-12-11 19:25:56,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 719 transitions, 2079 flow [2022-12-11 19:25:56,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-11 19:25:56,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-11 19:25:56,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 10481 transitions. [2022-12-11 19:25:56,495 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8935208866155158 [2022-12-11 19:25:56,495 INFO L175 Difference]: Start difference. First operand has 650 places, 677 transitions, 1701 flow. Second operand 17 states and 10481 transitions. [2022-12-11 19:25:56,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 719 transitions, 2079 flow [2022-12-11 19:25:56,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 719 transitions, 2075 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-11 19:25:56,508 INFO L231 Difference]: Finished difference. Result has 665 places, 698 transitions, 1960 flow [2022-12-11 19:25:56,509 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=646, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1960, PETRI_PLACES=665, PETRI_TRANSITIONS=698} [2022-12-11 19:25:56,510 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 51 predicate places. [2022-12-11 19:25:56,510 INFO L495 AbstractCegarLoop]: Abstraction has has 665 places, 698 transitions, 1960 flow [2022-12-11 19:25:56,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 613.6818181818181) internal successors, (13501), 22 states have internal predecessors, (13501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:56,513 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:25:56,513 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:25:56,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-11 19:25:56,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:25:56,719 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)] === [2022-12-11 19:25:56,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:25:56,720 INFO L85 PathProgramCache]: Analyzing trace with hash 958148538, now seen corresponding path program 3 times [2022-12-11 19:25:56,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:25:56,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314674376] [2022-12-11 19:25:56,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:25:56,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:25:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:25:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:25:56,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:25:56,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314674376] [2022-12-11 19:25:56,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314674376] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:25:56,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:25:56,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:25:56,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917843023] [2022-12-11 19:25:56,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:25:56,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:25:56,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:25:56,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:25:56,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:25:56,921 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 690 [2022-12-11 19:25:56,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 665 places, 698 transitions, 1960 flow. Second operand has 3 states, 3 states have (on average 635.6666666666666) internal successors, (1907), 3 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:56,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:25:56,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 690 [2022-12-11 19:25:56,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:25:58,206 INFO L130 PetriNetUnfolder]: 330/5279 cut-off events. [2022-12-11 19:25:58,206 INFO L131 PetriNetUnfolder]: For 965/1080 co-relation queries the response was YES. [2022-12-11 19:25:58,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6785 conditions, 5279 events. 330/5279 cut-off events. For 965/1080 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 52922 event pairs, 22 based on Foata normal form. 0/4808 useless extension candidates. Maximal degree in co-relation 6506. Up to 98 conditions per place. [2022-12-11 19:25:58,307 INFO L137 encePairwiseOnDemand]: 685/690 looper letters, 25 selfloop transitions, 4 changer transitions 0/707 dead transitions. [2022-12-11 19:25:58,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 707 transitions, 2041 flow [2022-12-11 19:25:58,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:25:58,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:25:58,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1926 transitions. [2022-12-11 19:25:58,310 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9304347826086956 [2022-12-11 19:25:58,310 INFO L175 Difference]: Start difference. First operand has 665 places, 698 transitions, 1960 flow. Second operand 3 states and 1926 transitions. [2022-12-11 19:25:58,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 667 places, 707 transitions, 2041 flow [2022-12-11 19:25:58,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 659 places, 707 transitions, 1974 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-12-11 19:25:58,332 INFO L231 Difference]: Finished difference. Result has 660 places, 699 transitions, 1911 flow [2022-12-11 19:25:58,332 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1911, PETRI_PLACES=660, PETRI_TRANSITIONS=699} [2022-12-11 19:25:58,333 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 46 predicate places. [2022-12-11 19:25:58,333 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 699 transitions, 1911 flow [2022-12-11 19:25:58,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 635.6666666666666) internal successors, (1907), 3 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:58,334 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:25:58,334 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:25:58,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-11 19:25:58,334 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)] === [2022-12-11 19:25:58,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:25:58,335 INFO L85 PathProgramCache]: Analyzing trace with hash 354440154, now seen corresponding path program 2 times [2022-12-11 19:25:58,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:25:58,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543927858] [2022-12-11 19:25:58,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:25:58,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:25:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:25:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:25:58,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:25:58,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543927858] [2022-12-11 19:25:58,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543927858] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:25:58,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:25:58,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:25:58,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348895551] [2022-12-11 19:25:58,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:25:58,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:25:58,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:25:58,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:25:58,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:25:58,560 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 690 [2022-12-11 19:25:58,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 699 transitions, 1911 flow. Second operand has 3 states, 3 states have (on average 635.6666666666666) internal successors, (1907), 3 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:58,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:25:58,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 690 [2022-12-11 19:25:58,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:25:59,272 INFO L130 PetriNetUnfolder]: 357/3245 cut-off events. [2022-12-11 19:25:59,272 INFO L131 PetriNetUnfolder]: For 466/506 co-relation queries the response was YES. [2022-12-11 19:25:59,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4127 conditions, 3245 events. 357/3245 cut-off events. For 466/506 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 27882 event pairs, 154 based on Foata normal form. 0/2830 useless extension candidates. Maximal degree in co-relation 3876. Up to 383 conditions per place. [2022-12-11 19:25:59,308 INFO L137 encePairwiseOnDemand]: 685/690 looper letters, 23 selfloop transitions, 4 changer transitions 0/706 dead transitions. [2022-12-11 19:25:59,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 662 places, 706 transitions, 1982 flow [2022-12-11 19:25:59,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:25:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:25:59,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1924 transitions. [2022-12-11 19:25:59,311 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9294685990338164 [2022-12-11 19:25:59,311 INFO L175 Difference]: Start difference. First operand has 660 places, 699 transitions, 1911 flow. Second operand 3 states and 1924 transitions. [2022-12-11 19:25:59,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 662 places, 706 transitions, 1982 flow [2022-12-11 19:25:59,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 661 places, 706 transitions, 1978 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:25:59,323 INFO L231 Difference]: Finished difference. Result has 662 places, 700 transitions, 1925 flow [2022-12-11 19:25:59,324 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=659, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1925, PETRI_PLACES=662, PETRI_TRANSITIONS=700} [2022-12-11 19:25:59,324 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 48 predicate places. [2022-12-11 19:25:59,324 INFO L495 AbstractCegarLoop]: Abstraction has has 662 places, 700 transitions, 1925 flow [2022-12-11 19:25:59,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 635.6666666666666) internal successors, (1907), 3 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:59,325 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:25:59,325 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:25:59,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-11 19:25:59,325 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)] === [2022-12-11 19:25:59,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:25:59,326 INFO L85 PathProgramCache]: Analyzing trace with hash 2051307859, now seen corresponding path program 1 times [2022-12-11 19:25:59,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:25:59,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673109459] [2022-12-11 19:25:59,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:25:59,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:25:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:25:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:25:59,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:25:59,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673109459] [2022-12-11 19:25:59,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673109459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:25:59,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:25:59,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:25:59,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654140976] [2022-12-11 19:25:59,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:25:59,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:25:59,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:25:59,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:25:59,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:25:59,532 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 690 [2022-12-11 19:25:59,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 700 transitions, 1925 flow. Second operand has 3 states, 3 states have (on average 635.6666666666666) internal successors, (1907), 3 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:25:59,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:25:59,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 690 [2022-12-11 19:25:59,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:00,747 INFO L130 PetriNetUnfolder]: 278/4534 cut-off events. [2022-12-11 19:26:00,747 INFO L131 PetriNetUnfolder]: For 757/885 co-relation queries the response was YES. [2022-12-11 19:26:00,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5768 conditions, 4534 events. 278/4534 cut-off events. For 757/885 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 43666 event pairs, 55 based on Foata normal form. 2/4089 useless extension candidates. Maximal degree in co-relation 5418. Up to 180 conditions per place. [2022-12-11 19:26:00,915 INFO L137 encePairwiseOnDemand]: 685/690 looper letters, 24 selfloop transitions, 4 changer transitions 0/708 dead transitions. [2022-12-11 19:26:00,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 708 transitions, 2001 flow [2022-12-11 19:26:00,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:26:00,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:26:00,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1925 transitions. [2022-12-11 19:26:00,918 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9299516908212561 [2022-12-11 19:26:00,918 INFO L175 Difference]: Start difference. First operand has 662 places, 700 transitions, 1925 flow. Second operand 3 states and 1925 transitions. [2022-12-11 19:26:00,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 708 transitions, 2001 flow [2022-12-11 19:26:00,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 708 transitions, 1997 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:26:00,936 INFO L231 Difference]: Finished difference. Result has 664 places, 701 transitions, 1939 flow [2022-12-11 19:26:00,937 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=696, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1939, PETRI_PLACES=664, PETRI_TRANSITIONS=701} [2022-12-11 19:26:00,937 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 50 predicate places. [2022-12-11 19:26:00,937 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 701 transitions, 1939 flow [2022-12-11 19:26:00,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 635.6666666666666) internal successors, (1907), 3 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:00,938 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:00,938 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:00,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-11 19:26:00,938 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)] === [2022-12-11 19:26:00,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:00,939 INFO L85 PathProgramCache]: Analyzing trace with hash 786817636, now seen corresponding path program 1 times [2022-12-11 19:26:00,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:00,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956187341] [2022-12-11 19:26:00,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:00,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:26:01,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:01,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956187341] [2022-12-11 19:26:01,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956187341] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:01,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:01,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:26:01,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367551329] [2022-12-11 19:26:01,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:01,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:26:01,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:01,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:26:01,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:26:01,314 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 586 out of 690 [2022-12-11 19:26:01,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 701 transitions, 1939 flow. Second operand has 6 states, 6 states have (on average 590.6666666666666) internal successors, (3544), 6 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:01,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:01,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 586 of 690 [2022-12-11 19:26:01,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:11,571 INFO L130 PetriNetUnfolder]: 7894/50893 cut-off events. [2022-12-11 19:26:11,571 INFO L131 PetriNetUnfolder]: For 19368/20357 co-relation queries the response was YES. [2022-12-11 19:26:12,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79712 conditions, 50893 events. 7894/50893 cut-off events. For 19368/20357 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 781687 event pairs, 5306 based on Foata normal form. 16/47111 useless extension candidates. Maximal degree in co-relation 79282. Up to 8643 conditions per place. [2022-12-11 19:26:12,282 INFO L137 encePairwiseOnDemand]: 672/690 looper letters, 172 selfloop transitions, 19 changer transitions 2/816 dead transitions. [2022-12-11 19:26:12,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 816 transitions, 2577 flow [2022-12-11 19:26:12,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 19:26:12,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 19:26:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4288 transitions. [2022-12-11 19:26:12,287 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8877846790890269 [2022-12-11 19:26:12,287 INFO L175 Difference]: Start difference. First operand has 664 places, 701 transitions, 1939 flow. Second operand 7 states and 4288 transitions. [2022-12-11 19:26:12,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 816 transitions, 2577 flow [2022-12-11 19:26:12,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 669 places, 816 transitions, 2573 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:26:12,635 INFO L231 Difference]: Finished difference. Result has 673 places, 713 transitions, 2053 flow [2022-12-11 19:26:12,636 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=1935, PETRI_DIFFERENCE_MINUEND_PLACES=663, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=682, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2053, PETRI_PLACES=673, PETRI_TRANSITIONS=713} [2022-12-11 19:26:12,636 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 59 predicate places. [2022-12-11 19:26:12,637 INFO L495 AbstractCegarLoop]: Abstraction has has 673 places, 713 transitions, 2053 flow [2022-12-11 19:26:12,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 590.6666666666666) internal successors, (3544), 6 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:12,638 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:12,638 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:12,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-11 19:26:12,638 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)] === [2022-12-11 19:26:12,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:12,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1449837160, now seen corresponding path program 2 times [2022-12-11 19:26:12,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:12,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428070272] [2022-12-11 19:26:12,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:12,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:26:13,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:13,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428070272] [2022-12-11 19:26:13,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428070272] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:13,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:13,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:26:13,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128071196] [2022-12-11 19:26:13,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:13,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:26:13,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:13,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:26:13,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:26:13,047 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 586 out of 690 [2022-12-11 19:26:13,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 713 transitions, 2053 flow. Second operand has 6 states, 6 states have (on average 590.6666666666666) internal successors, (3544), 6 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:13,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:13,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 586 of 690 [2022-12-11 19:26:13,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:21,046 INFO L130 PetriNetUnfolder]: 7361/38528 cut-off events. [2022-12-11 19:26:21,046 INFO L131 PetriNetUnfolder]: For 25129/26377 co-relation queries the response was YES. [2022-12-11 19:26:21,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65262 conditions, 38528 events. 7361/38528 cut-off events. For 25129/26377 co-relation queries the response was YES. Maximal size of possible extension queue 908. Compared 544498 event pairs, 2947 based on Foata normal form. 132/36728 useless extension candidates. Maximal degree in co-relation 64824. Up to 4556 conditions per place. [2022-12-11 19:26:21,724 INFO L137 encePairwiseOnDemand]: 676/690 looper letters, 207 selfloop transitions, 30 changer transitions 2/862 dead transitions. [2022-12-11 19:26:21,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 862 transitions, 3172 flow [2022-12-11 19:26:21,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 19:26:21,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 19:26:21,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4307 transitions. [2022-12-11 19:26:21,732 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8917184265010352 [2022-12-11 19:26:21,732 INFO L175 Difference]: Start difference. First operand has 673 places, 713 transitions, 2053 flow. Second operand 7 states and 4307 transitions. [2022-12-11 19:26:21,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 679 places, 862 transitions, 3172 flow [2022-12-11 19:26:21,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 678 places, 862 transitions, 3156 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:26:21,876 INFO L231 Difference]: Finished difference. Result has 683 places, 735 transitions, 2373 flow [2022-12-11 19:26:21,877 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=2047, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=690, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2373, PETRI_PLACES=683, PETRI_TRANSITIONS=735} [2022-12-11 19:26:21,877 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 69 predicate places. [2022-12-11 19:26:21,877 INFO L495 AbstractCegarLoop]: Abstraction has has 683 places, 735 transitions, 2373 flow [2022-12-11 19:26:21,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 590.6666666666666) internal successors, (3544), 6 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:21,878 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:21,878 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:21,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-11 19:26:21,879 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)] === [2022-12-11 19:26:21,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:21,879 INFO L85 PathProgramCache]: Analyzing trace with hash -714564144, now seen corresponding path program 3 times [2022-12-11 19:26:21,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:21,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601916673] [2022-12-11 19:26:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:21,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:22,241 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:26:22,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:22,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601916673] [2022-12-11 19:26:22,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601916673] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:22,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:22,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:26:22,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57648132] [2022-12-11 19:26:22,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:22,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:26:22,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:22,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:26:22,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:26:22,246 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 586 out of 690 [2022-12-11 19:26:22,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 683 places, 735 transitions, 2373 flow. Second operand has 6 states, 6 states have (on average 590.6666666666666) internal successors, (3544), 6 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:22,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:22,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 586 of 690 [2022-12-11 19:26:22,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:33,296 INFO L130 PetriNetUnfolder]: 8275/53917 cut-off events. [2022-12-11 19:26:33,296 INFO L131 PetriNetUnfolder]: For 36099/37245 co-relation queries the response was YES. [2022-12-11 19:26:33,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89421 conditions, 53917 events. 8275/53917 cut-off events. For 36099/37245 co-relation queries the response was YES. Maximal size of possible extension queue 1227. Compared 832807 event pairs, 4760 based on Foata normal form. 45/50783 useless extension candidates. Maximal degree in co-relation 88980. Up to 8304 conditions per place. [2022-12-11 19:26:34,230 INFO L137 encePairwiseOnDemand]: 673/690 looper letters, 212 selfloop transitions, 30 changer transitions 2/867 dead transitions. [2022-12-11 19:26:34,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 867 transitions, 3311 flow [2022-12-11 19:26:34,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 19:26:34,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 19:26:34,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4306 transitions. [2022-12-11 19:26:34,236 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.891511387163561 [2022-12-11 19:26:34,236 INFO L175 Difference]: Start difference. First operand has 683 places, 735 transitions, 2373 flow. Second operand 7 states and 4306 transitions. [2022-12-11 19:26:34,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 867 transitions, 3311 flow [2022-12-11 19:26:34,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 689 places, 867 transitions, 3303 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-11 19:26:34,648 INFO L231 Difference]: Finished difference. Result has 694 places, 747 transitions, 2552 flow [2022-12-11 19:26:34,649 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=2369, PETRI_DIFFERENCE_MINUEND_PLACES=683, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2552, PETRI_PLACES=694, PETRI_TRANSITIONS=747} [2022-12-11 19:26:34,649 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 80 predicate places. [2022-12-11 19:26:34,649 INFO L495 AbstractCegarLoop]: Abstraction has has 694 places, 747 transitions, 2552 flow [2022-12-11 19:26:34,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 590.6666666666666) internal successors, (3544), 6 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:34,650 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:34,650 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:34,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-11 19:26:34,651 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)] === [2022-12-11 19:26:34,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:34,651 INFO L85 PathProgramCache]: Analyzing trace with hash 127406412, now seen corresponding path program 4 times [2022-12-11 19:26:34,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:34,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816784955] [2022-12-11 19:26:34,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:34,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:26:34,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:34,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816784955] [2022-12-11 19:26:34,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816784955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:34,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:34,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:26:34,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93940365] [2022-12-11 19:26:34,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:34,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:26:34,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:34,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:26:34,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:26:34,990 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 586 out of 690 [2022-12-11 19:26:35,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 694 places, 747 transitions, 2552 flow. Second operand has 6 states, 6 states have (on average 590.6666666666666) internal successors, (3544), 6 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:35,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:35,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 586 of 690 [2022-12-11 19:26:35,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:46,827 INFO L130 PetriNetUnfolder]: 8215/52766 cut-off events. [2022-12-11 19:26:46,827 INFO L131 PetriNetUnfolder]: For 51479/52956 co-relation queries the response was YES. [2022-12-11 19:26:47,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90217 conditions, 52766 events. 8215/52766 cut-off events. For 51479/52956 co-relation queries the response was YES. Maximal size of possible extension queue 1233. Compared 811112 event pairs, 5559 based on Foata normal form. 30/49673 useless extension candidates. Maximal degree in co-relation 89767. Up to 9898 conditions per place. [2022-12-11 19:26:48,159 INFO L137 encePairwiseOnDemand]: 673/690 looper letters, 180 selfloop transitions, 28 changer transitions 7/838 dead transitions. [2022-12-11 19:26:48,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 838 transitions, 3357 flow [2022-12-11 19:26:48,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 19:26:48,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 19:26:48,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4257 transitions. [2022-12-11 19:26:48,167 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8813664596273292 [2022-12-11 19:26:48,167 INFO L175 Difference]: Start difference. First operand has 694 places, 747 transitions, 2552 flow. Second operand 7 states and 4257 transitions. [2022-12-11 19:26:48,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 838 transitions, 3357 flow [2022-12-11 19:26:48,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 698 places, 838 transitions, 3345 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-11 19:26:48,739 INFO L231 Difference]: Finished difference. Result has 702 places, 760 transitions, 2765 flow [2022-12-11 19:26:48,740 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=692, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=719, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2765, PETRI_PLACES=702, PETRI_TRANSITIONS=760} [2022-12-11 19:26:48,740 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 88 predicate places. [2022-12-11 19:26:48,740 INFO L495 AbstractCegarLoop]: Abstraction has has 702 places, 760 transitions, 2765 flow [2022-12-11 19:26:48,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 590.6666666666666) internal successors, (3544), 6 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:48,741 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:48,742 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:48,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-11 19:26:48,742 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)] === [2022-12-11 19:26:48,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:48,743 INFO L85 PathProgramCache]: Analyzing trace with hash -318099168, now seen corresponding path program 5 times [2022-12-11 19:26:48,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:48,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910625910] [2022-12-11 19:26:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:48,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:26:49,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:49,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910625910] [2022-12-11 19:26:49,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910625910] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:49,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:49,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:26:49,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637275658] [2022-12-11 19:26:49,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:49,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:26:49,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:49,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:26:49,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:26:49,132 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 586 out of 690 [2022-12-11 19:26:49,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 760 transitions, 2765 flow. Second operand has 6 states, 6 states have (on average 590.6666666666666) internal successors, (3544), 6 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:49,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:49,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 586 of 690 [2022-12-11 19:26:49,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:26:58,521 INFO L130 PetriNetUnfolder]: 7976/44059 cut-off events. [2022-12-11 19:26:58,521 INFO L131 PetriNetUnfolder]: For 56120/58449 co-relation queries the response was YES. [2022-12-11 19:26:59,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80297 conditions, 44059 events. 7976/44059 cut-off events. For 56120/58449 co-relation queries the response was YES. Maximal size of possible extension queue 1073. Compared 643060 event pairs, 2997 based on Foata normal form. 86/41803 useless extension candidates. Maximal degree in co-relation 79840. Up to 4956 conditions per place. [2022-12-11 19:26:59,153 INFO L137 encePairwiseOnDemand]: 676/690 looper letters, 192 selfloop transitions, 38 changer transitions 5/858 dead transitions. [2022-12-11 19:26:59,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 858 transitions, 3752 flow [2022-12-11 19:26:59,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 19:26:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 19:26:59,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4276 transitions. [2022-12-11 19:26:59,156 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8853002070393374 [2022-12-11 19:26:59,156 INFO L175 Difference]: Start difference. First operand has 702 places, 760 transitions, 2765 flow. Second operand 7 states and 4276 transitions. [2022-12-11 19:26:59,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 858 transitions, 3752 flow [2022-12-11 19:26:59,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 707 places, 858 transitions, 3724 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-12-11 19:26:59,459 INFO L231 Difference]: Finished difference. Result has 709 places, 761 transitions, 2869 flow [2022-12-11 19:26:59,460 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=2749, PETRI_DIFFERENCE_MINUEND_PLACES=701, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2869, PETRI_PLACES=709, PETRI_TRANSITIONS=761} [2022-12-11 19:26:59,460 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 95 predicate places. [2022-12-11 19:26:59,460 INFO L495 AbstractCegarLoop]: Abstraction has has 709 places, 761 transitions, 2869 flow [2022-12-11 19:26:59,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 590.6666666666666) internal successors, (3544), 6 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:59,461 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:26:59,461 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:26:59,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-11 19:26:59,462 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)] === [2022-12-11 19:26:59,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:26:59,462 INFO L85 PathProgramCache]: Analyzing trace with hash -798895784, now seen corresponding path program 6 times [2022-12-11 19:26:59,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:26:59,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010527053] [2022-12-11 19:26:59,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:26:59,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:26:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:26:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:26:59,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:26:59,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010527053] [2022-12-11 19:26:59,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010527053] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:26:59,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:26:59,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:26:59,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409403559] [2022-12-11 19:26:59,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:26:59,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:26:59,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:26:59,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:26:59,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:26:59,869 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 586 out of 690 [2022-12-11 19:26:59,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 709 places, 761 transitions, 2869 flow. Second operand has 6 states, 6 states have (on average 590.6666666666666) internal successors, (3544), 6 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:26:59,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:26:59,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 586 of 690 [2022-12-11 19:26:59,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:27:12,816 INFO L130 PetriNetUnfolder]: 8973/59088 cut-off events. [2022-12-11 19:27:12,816 INFO L131 PetriNetUnfolder]: For 70328/71769 co-relation queries the response was YES. [2022-12-11 19:27:13,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99797 conditions, 59088 events. 8973/59088 cut-off events. For 70328/71769 co-relation queries the response was YES. Maximal size of possible extension queue 1331. Compared 927633 event pairs, 5165 based on Foata normal form. 115/55412 useless extension candidates. Maximal degree in co-relation 99572. Up to 8374 conditions per place. [2022-12-11 19:27:13,890 INFO L137 encePairwiseOnDemand]: 658/690 looper letters, 220 selfloop transitions, 81 changer transitions 4/928 dead transitions. [2022-12-11 19:27:13,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 715 places, 928 transitions, 4260 flow [2022-12-11 19:27:13,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 19:27:13,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 19:27:13,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4327 transitions. [2022-12-11 19:27:13,893 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8958592132505176 [2022-12-11 19:27:13,893 INFO L175 Difference]: Start difference. First operand has 709 places, 761 transitions, 2869 flow. Second operand 7 states and 4327 transitions. [2022-12-11 19:27:13,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 715 places, 928 transitions, 4260 flow [2022-12-11 19:27:14,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 711 places, 928 transitions, 4172 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-12-11 19:27:14,203 INFO L231 Difference]: Finished difference. Result has 716 places, 813 transitions, 3485 flow [2022-12-11 19:27:14,204 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=2801, PETRI_DIFFERENCE_MINUEND_PLACES=705, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3485, PETRI_PLACES=716, PETRI_TRANSITIONS=813} [2022-12-11 19:27:14,204 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 102 predicate places. [2022-12-11 19:27:14,204 INFO L495 AbstractCegarLoop]: Abstraction has has 716 places, 813 transitions, 3485 flow [2022-12-11 19:27:14,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 590.6666666666666) internal successors, (3544), 6 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:14,205 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:27:14,205 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:27:14,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-11 19:27:14,206 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)] === [2022-12-11 19:27:14,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:27:14,206 INFO L85 PathProgramCache]: Analyzing trace with hash 689052660, now seen corresponding path program 7 times [2022-12-11 19:27:14,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:27:14,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116899253] [2022-12-11 19:27:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:27:14,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:27:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:27:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:27:14,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:27:14,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116899253] [2022-12-11 19:27:14,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116899253] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:27:14,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:27:14,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:27:14,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880270226] [2022-12-11 19:27:14,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:27:14,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:27:14,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:27:14,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:27:14,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:27:14,617 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 586 out of 690 [2022-12-11 19:27:14,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 716 places, 813 transitions, 3485 flow. Second operand has 6 states, 6 states have (on average 590.6666666666666) internal successors, (3544), 6 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:14,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:27:14,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 586 of 690 [2022-12-11 19:27:14,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:27:29,040 INFO L130 PetriNetUnfolder]: 8972/59485 cut-off events. [2022-12-11 19:27:29,040 INFO L131 PetriNetUnfolder]: For 84479/86296 co-relation queries the response was YES. [2022-12-11 19:27:30,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105124 conditions, 59485 events. 8972/59485 cut-off events. For 84479/86296 co-relation queries the response was YES. Maximal size of possible extension queue 1336. Compared 937071 event pairs, 5356 based on Foata normal form. 171/55813 useless extension candidates. Maximal degree in co-relation 104908. Up to 8514 conditions per place. [2022-12-11 19:27:30,280 INFO L137 encePairwiseOnDemand]: 673/690 looper letters, 221 selfloop transitions, 53 changer transitions 1/898 dead transitions. [2022-12-11 19:27:30,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 720 places, 898 transitions, 4506 flow [2022-12-11 19:27:30,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-11 19:27:30,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-11 19:27:30,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3673 transitions. [2022-12-11 19:27:30,282 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8871980676328503 [2022-12-11 19:27:30,282 INFO L175 Difference]: Start difference. First operand has 716 places, 813 transitions, 3485 flow. Second operand 6 states and 3673 transitions. [2022-12-11 19:27:30,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 720 places, 898 transitions, 4506 flow [2022-12-11 19:27:30,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 719 places, 898 transitions, 4476 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-12-11 19:27:30,717 INFO L231 Difference]: Finished difference. Result has 723 places, 823 transitions, 3776 flow [2022-12-11 19:27:30,718 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=3461, PETRI_DIFFERENCE_MINUEND_PLACES=714, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=813, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=762, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3776, PETRI_PLACES=723, PETRI_TRANSITIONS=823} [2022-12-11 19:27:30,718 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 109 predicate places. [2022-12-11 19:27:30,718 INFO L495 AbstractCegarLoop]: Abstraction has has 723 places, 823 transitions, 3776 flow [2022-12-11 19:27:30,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 590.6666666666666) internal successors, (3544), 6 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:30,720 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:27:30,720 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:27:30,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-11 19:27:30,720 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)] === [2022-12-11 19:27:30,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:27:30,721 INFO L85 PathProgramCache]: Analyzing trace with hash -2021714026, now seen corresponding path program 1 times [2022-12-11 19:27:30,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:27:30,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519736880] [2022-12-11 19:27:30,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:27:30,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:27:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:27:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:27:31,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:27:31,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519736880] [2022-12-11 19:27:31,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519736880] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:27:31,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:27:31,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 19:27:31,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856306290] [2022-12-11 19:27:31,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:27:31,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 19:27:31,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:27:31,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 19:27:31,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 19:27:31,148 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 584 out of 690 [2022-12-11 19:27:31,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 723 places, 823 transitions, 3776 flow. Second operand has 7 states, 7 states have (on average 590.4285714285714) internal successors, (4133), 7 states have internal predecessors, (4133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:31,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:27:31,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 584 of 690 [2022-12-11 19:27:31,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:27:44,919 INFO L130 PetriNetUnfolder]: 9686/59948 cut-off events. [2022-12-11 19:27:44,920 INFO L131 PetriNetUnfolder]: For 68425/77122 co-relation queries the response was YES. [2022-12-11 19:27:45,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96222 conditions, 59948 events. 9686/59948 cut-off events. For 68425/77122 co-relation queries the response was YES. Maximal size of possible extension queue 1534. Compared 947118 event pairs, 6114 based on Foata normal form. 272/53559 useless extension candidates. Maximal degree in co-relation 95958. Up to 11121 conditions per place. [2022-12-11 19:27:46,100 INFO L137 encePairwiseOnDemand]: 684/690 looper letters, 110 selfloop transitions, 3 changer transitions 4/876 dead transitions. [2022-12-11 19:27:46,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 876 transitions, 4157 flow [2022-12-11 19:27:46,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 19:27:46,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 19:27:46,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4200 transitions. [2022-12-11 19:27:46,103 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2022-12-11 19:27:46,103 INFO L175 Difference]: Start difference. First operand has 723 places, 823 transitions, 3776 flow. Second operand 7 states and 4200 transitions. [2022-12-11 19:27:46,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 876 transitions, 4157 flow [2022-12-11 19:27:46,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 728 places, 876 transitions, 4110 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-11 19:27:46,427 INFO L231 Difference]: Finished difference. Result has 733 places, 825 transitions, 3754 flow [2022-12-11 19:27:46,427 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=3729, PETRI_DIFFERENCE_MINUEND_PLACES=722, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=820, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3754, PETRI_PLACES=733, PETRI_TRANSITIONS=825} [2022-12-11 19:27:46,428 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 119 predicate places. [2022-12-11 19:27:46,428 INFO L495 AbstractCegarLoop]: Abstraction has has 733 places, 825 transitions, 3754 flow [2022-12-11 19:27:46,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 590.4285714285714) internal successors, (4133), 7 states have internal predecessors, (4133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:46,429 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:27:46,429 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:27:46,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-11 19:27:46,429 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)] === [2022-12-11 19:27:46,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:27:46,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1264782892, now seen corresponding path program 8 times [2022-12-11 19:27:46,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:27:46,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266758418] [2022-12-11 19:27:46,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:27:46,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:27:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:27:46,700 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:27:46,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:27:46,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266758418] [2022-12-11 19:27:46,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266758418] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:27:46,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:27:46,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:27:46,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939952470] [2022-12-11 19:27:46,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:27:46,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:27:46,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:27:46,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:27:46,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:27:46,705 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 586 out of 690 [2022-12-11 19:27:46,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 733 places, 825 transitions, 3754 flow. Second operand has 6 states, 6 states have (on average 590.6666666666666) internal successors, (3544), 6 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:27:46,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:27:46,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 586 of 690 [2022-12-11 19:27:46,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:27:59,294 INFO L130 PetriNetUnfolder]: 8761/51953 cut-off events. [2022-12-11 19:27:59,294 INFO L131 PetriNetUnfolder]: For 95360/98308 co-relation queries the response was YES. [2022-12-11 19:28:00,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99228 conditions, 51953 events. 8761/51953 cut-off events. For 95360/98308 co-relation queries the response was YES. Maximal size of possible extension queue 1169. Compared 785180 event pairs, 3852 based on Foata normal form. 211/49145 useless extension candidates. Maximal degree in co-relation 98993. Up to 6555 conditions per place. [2022-12-11 19:28:01,230 INFO L137 encePairwiseOnDemand]: 652/690 looper letters, 168 selfloop transitions, 130 changer transitions 17/940 dead transitions. [2022-12-11 19:28:01,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 738 places, 940 transitions, 5034 flow [2022-12-11 19:28:01,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 19:28:01,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 19:28:01,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 4882 transitions. [2022-12-11 19:28:01,235 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8844202898550725 [2022-12-11 19:28:01,235 INFO L175 Difference]: Start difference. First operand has 733 places, 825 transitions, 3754 flow. Second operand 8 states and 4882 transitions. [2022-12-11 19:28:01,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 738 places, 940 transitions, 5034 flow [2022-12-11 19:28:01,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 735 places, 940 transitions, 5017 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-12-11 19:28:01,871 INFO L231 Difference]: Finished difference. Result has 741 places, 852 transitions, 4467 flow [2022-12-11 19:28:01,872 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=3680, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=820, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4467, PETRI_PLACES=741, PETRI_TRANSITIONS=852} [2022-12-11 19:28:01,873 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 127 predicate places. [2022-12-11 19:28:01,873 INFO L495 AbstractCegarLoop]: Abstraction has has 741 places, 852 transitions, 4467 flow [2022-12-11 19:28:01,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 590.6666666666666) internal successors, (3544), 6 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:28:01,874 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:28:01,880 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:28:01,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-11 19:28:01,880 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)] === [2022-12-11 19:28:01,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:28:01,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1098210045, now seen corresponding path program 1 times [2022-12-11 19:28:01,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:28:01,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007353142] [2022-12-11 19:28:01,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:28:01,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:28:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:28:02,375 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:28:02,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:28:02,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007353142] [2022-12-11 19:28:02,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007353142] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:28:02,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:28:02,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 19:28:02,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007088759] [2022-12-11 19:28:02,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:28:02,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 19:28:02,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:28:02,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 19:28:02,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-11 19:28:02,379 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 690 [2022-12-11 19:28:02,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 741 places, 852 transitions, 4467 flow. Second operand has 8 states, 8 states have (on average 586.875) internal successors, (4695), 8 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:28:02,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:28:02,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 690 [2022-12-11 19:28:02,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:28:19,267 INFO L130 PetriNetUnfolder]: 11850/68808 cut-off events. [2022-12-11 19:28:19,267 INFO L131 PetriNetUnfolder]: For 104957/121650 co-relation queries the response was YES. [2022-12-11 19:28:20,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113831 conditions, 68808 events. 11850/68808 cut-off events. For 104957/121650 co-relation queries the response was YES. Maximal size of possible extension queue 1821. Compared 1102799 event pairs, 7086 based on Foata normal form. 267/61164 useless extension candidates. Maximal degree in co-relation 113551. Up to 12834 conditions per place. [2022-12-11 19:28:20,793 INFO L137 encePairwiseOnDemand]: 682/690 looper letters, 138 selfloop transitions, 5 changer transitions 6/932 dead transitions. [2022-12-11 19:28:20,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 749 places, 932 transitions, 4976 flow [2022-12-11 19:28:20,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 19:28:20,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 19:28:20,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 5374 transitions. [2022-12-11 19:28:20,797 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.865378421900161 [2022-12-11 19:28:20,797 INFO L175 Difference]: Start difference. First operand has 741 places, 852 transitions, 4467 flow. Second operand 9 states and 5374 transitions. [2022-12-11 19:28:20,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 749 places, 932 transitions, 4976 flow [2022-12-11 19:28:21,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 749 places, 932 transitions, 4882 flow, removed 47 selfloop flow, removed 0 redundant places. [2022-12-11 19:28:21,236 INFO L231 Difference]: Finished difference. Result has 756 places, 854 transitions, 4406 flow [2022-12-11 19:28:21,236 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=4373, PETRI_DIFFERENCE_MINUEND_PLACES=741, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=852, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=847, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4406, PETRI_PLACES=756, PETRI_TRANSITIONS=854} [2022-12-11 19:28:21,236 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 142 predicate places. [2022-12-11 19:28:21,237 INFO L495 AbstractCegarLoop]: Abstraction has has 756 places, 854 transitions, 4406 flow [2022-12-11 19:28:21,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 586.875) internal successors, (4695), 8 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:28:21,237 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:28:21,237 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:28:21,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-11 19:28:21,238 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)] === [2022-12-11 19:28:21,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:28:21,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1628168798, now seen corresponding path program 1 times [2022-12-11 19:28:21,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:28:21,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13415315] [2022-12-11 19:28:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:28:21,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:28:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:28:22,097 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:28:22,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:28:22,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13415315] [2022-12-11 19:28:22,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13415315] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:28:22,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:28:22,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-11 19:28:22,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675823677] [2022-12-11 19:28:22,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:28:22,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-11 19:28:22,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:28:22,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-11 19:28:22,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-11 19:28:22,102 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 575 out of 690 [2022-12-11 19:28:22,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 756 places, 854 transitions, 4406 flow. Second operand has 11 states, 11 states have (on average 579.6363636363636) internal successors, (6376), 11 states have internal predecessors, (6376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:28:22,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:28:22,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 575 of 690 [2022-12-11 19:28:22,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:28:50,943 INFO L130 PetriNetUnfolder]: 32237/102096 cut-off events. [2022-12-11 19:28:50,943 INFO L131 PetriNetUnfolder]: For 116578/130748 co-relation queries the response was YES. [2022-12-11 19:28:53,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196829 conditions, 102096 events. 32237/102096 cut-off events. For 116578/130748 co-relation queries the response was YES. Maximal size of possible extension queue 3482. Compared 1508644 event pairs, 17263 based on Foata normal form. 311/91353 useless extension candidates. Maximal degree in co-relation 196543. Up to 31398 conditions per place. [2022-12-11 19:28:53,422 INFO L137 encePairwiseOnDemand]: 677/690 looper letters, 187 selfloop transitions, 23 changer transitions 15/997 dead transitions. [2022-12-11 19:28:53,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 767 places, 997 transitions, 5292 flow [2022-12-11 19:28:53,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-11 19:28:53,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-11 19:28:53,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 9412 transitions. [2022-12-11 19:28:53,429 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8525362318840579 [2022-12-11 19:28:53,429 INFO L175 Difference]: Start difference. First operand has 756 places, 854 transitions, 4406 flow. Second operand 16 states and 9412 transitions. [2022-12-11 19:28:53,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 767 places, 997 transitions, 5292 flow [2022-12-11 19:28:54,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 762 places, 997 transitions, 5271 flow, removed 10 selfloop flow, removed 5 redundant places. [2022-12-11 19:28:54,249 INFO L231 Difference]: Finished difference. Result has 774 places, 876 transitions, 4588 flow [2022-12-11 19:28:54,250 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=4393, PETRI_DIFFERENCE_MINUEND_PLACES=747, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=854, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=844, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4588, PETRI_PLACES=774, PETRI_TRANSITIONS=876} [2022-12-11 19:28:54,250 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 160 predicate places. [2022-12-11 19:28:54,250 INFO L495 AbstractCegarLoop]: Abstraction has has 774 places, 876 transitions, 4588 flow [2022-12-11 19:28:54,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 579.6363636363636) internal successors, (6376), 11 states have internal predecessors, (6376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:28:54,251 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:28:54,251 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:28:54,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-11 19:28:54,251 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)] === [2022-12-11 19:28:54,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:28:54,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2087996026, now seen corresponding path program 2 times [2022-12-11 19:28:54,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:28:54,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57327599] [2022-12-11 19:28:54,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:28:54,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:28:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:28:54,821 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:28:54,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:28:54,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57327599] [2022-12-11 19:28:54,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57327599] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:28:54,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:28:54,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 19:28:54,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933935547] [2022-12-11 19:28:54,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:28:54,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 19:28:54,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:28:54,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 19:28:54,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-11 19:28:54,825 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 690 [2022-12-11 19:28:54,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 774 places, 876 transitions, 4588 flow. Second operand has 10 states, 10 states have (on average 587.8) internal successors, (5878), 10 states have internal predecessors, (5878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:28:54,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:28:54,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 690 [2022-12-11 19:28:54,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:29:19,643 INFO L130 PetriNetUnfolder]: 20315/81703 cut-off events. [2022-12-11 19:29:19,643 INFO L131 PetriNetUnfolder]: For 157308/174379 co-relation queries the response was YES. [2022-12-11 19:29:21,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186481 conditions, 81703 events. 20315/81703 cut-off events. For 157308/174379 co-relation queries the response was YES. Maximal size of possible extension queue 2466. Compared 1236939 event pairs, 9748 based on Foata normal form. 23/72662 useless extension candidates. Maximal degree in co-relation 186187. Up to 18406 conditions per place. [2022-12-11 19:29:22,026 INFO L137 encePairwiseOnDemand]: 677/690 looper letters, 130 selfloop transitions, 33 changer transitions 18/962 dead transitions. [2022-12-11 19:29:22,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 791 places, 962 transitions, 5419 flow [2022-12-11 19:29:22,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-11 19:29:22,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-11 19:29:22,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 11805 transitions. [2022-12-11 19:29:22,035 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8554347826086957 [2022-12-11 19:29:22,035 INFO L175 Difference]: Start difference. First operand has 774 places, 876 transitions, 4588 flow. Second operand 20 states and 11805 transitions. [2022-12-11 19:29:22,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 791 places, 962 transitions, 5419 flow [2022-12-11 19:29:24,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 789 places, 962 transitions, 5365 flow, removed 27 selfloop flow, removed 2 redundant places. [2022-12-11 19:29:24,883 INFO L231 Difference]: Finished difference. Result has 804 places, 909 transitions, 4911 flow [2022-12-11 19:29:24,884 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=4548, PETRI_DIFFERENCE_MINUEND_PLACES=770, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=876, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=863, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4911, PETRI_PLACES=804, PETRI_TRANSITIONS=909} [2022-12-11 19:29:24,884 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 190 predicate places. [2022-12-11 19:29:24,884 INFO L495 AbstractCegarLoop]: Abstraction has has 804 places, 909 transitions, 4911 flow [2022-12-11 19:29:24,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 587.8) internal successors, (5878), 10 states have internal predecessors, (5878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:29:24,885 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:29:24,885 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:29:24,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-11 19:29:24,885 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)] === [2022-12-11 19:29:24,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:29:24,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1662809452, now seen corresponding path program 3 times [2022-12-11 19:29:24,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:29:24,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108228291] [2022-12-11 19:29:24,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:29:24,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:29:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:29:25,459 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:29:25,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:29:25,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108228291] [2022-12-11 19:29:25,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108228291] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:29:25,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:29:25,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 19:29:25,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447522440] [2022-12-11 19:29:25,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:29:25,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 19:29:25,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:29:25,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 19:29:25,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-11 19:29:25,464 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 690 [2022-12-11 19:29:25,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 804 places, 909 transitions, 4911 flow. Second operand has 10 states, 10 states have (on average 587.8) internal successors, (5878), 10 states have internal predecessors, (5878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:29:25,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:29:25,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 690 [2022-12-11 19:29:25,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:29:50,265 INFO L130 PetriNetUnfolder]: 19786/69844 cut-off events. [2022-12-11 19:29:50,265 INFO L131 PetriNetUnfolder]: For 261169/279084 co-relation queries the response was YES. [2022-12-11 19:29:52,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212018 conditions, 69844 events. 19786/69844 cut-off events. For 261169/279084 co-relation queries the response was YES. Maximal size of possible extension queue 2660. Compared 1030154 event pairs, 6978 based on Foata normal form. 254/63987 useless extension candidates. Maximal degree in co-relation 211710. Up to 13867 conditions per place. [2022-12-11 19:29:52,647 INFO L137 encePairwiseOnDemand]: 677/690 looper letters, 173 selfloop transitions, 57 changer transitions 24/1035 dead transitions. [2022-12-11 19:29:52,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 825 places, 1035 transitions, 6158 flow [2022-12-11 19:29:52,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-11 19:29:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-11 19:29:52,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 14176 transitions. [2022-12-11 19:29:52,656 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8560386473429952 [2022-12-11 19:29:52,656 INFO L175 Difference]: Start difference. First operand has 804 places, 909 transitions, 4911 flow. Second operand 24 states and 14176 transitions. [2022-12-11 19:29:52,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 825 places, 1035 transitions, 6158 flow [2022-12-11 19:29:58,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 823 places, 1035 transitions, 6050 flow, removed 54 selfloop flow, removed 2 redundant places. [2022-12-11 19:29:58,843 INFO L231 Difference]: Finished difference. Result has 842 places, 935 transitions, 5299 flow [2022-12-11 19:29:58,844 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=4819, PETRI_DIFFERENCE_MINUEND_PLACES=800, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=909, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=867, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=5299, PETRI_PLACES=842, PETRI_TRANSITIONS=935} [2022-12-11 19:29:58,844 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 228 predicate places. [2022-12-11 19:29:58,844 INFO L495 AbstractCegarLoop]: Abstraction has has 842 places, 935 transitions, 5299 flow [2022-12-11 19:29:58,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 587.8) internal successors, (5878), 10 states have internal predecessors, (5878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:29:58,845 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:29:58,845 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:29:58,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-11 19:29:58,845 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)] === [2022-12-11 19:29:58,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:29:58,846 INFO L85 PathProgramCache]: Analyzing trace with hash 2093105506, now seen corresponding path program 4 times [2022-12-11 19:29:58,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:29:58,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781621459] [2022-12-11 19:29:58,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:29:58,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:29:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:29:59,406 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:29:59,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:29:59,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781621459] [2022-12-11 19:29:59,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781621459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:29:59,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:29:59,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 19:29:59,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367371623] [2022-12-11 19:29:59,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:29:59,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 19:29:59,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:29:59,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 19:29:59,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-11 19:29:59,411 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 690 [2022-12-11 19:29:59,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 842 places, 935 transitions, 5299 flow. Second operand has 10 states, 10 states have (on average 587.8) internal successors, (5878), 10 states have internal predecessors, (5878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:29:59,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:29:59,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 690 [2022-12-11 19:29:59,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:30:27,765 INFO L130 PetriNetUnfolder]: 20530/72845 cut-off events. [2022-12-11 19:30:27,765 INFO L131 PetriNetUnfolder]: For 433545/452938 co-relation queries the response was YES. [2022-12-11 19:30:30,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258336 conditions, 72845 events. 20530/72845 cut-off events. For 433545/452938 co-relation queries the response was YES. Maximal size of possible extension queue 2680. Compared 1077103 event pairs, 7639 based on Foata normal form. 209/65960 useless extension candidates. Maximal degree in co-relation 258010. Up to 15056 conditions per place. [2022-12-11 19:30:30,511 INFO L137 encePairwiseOnDemand]: 677/690 looper letters, 211 selfloop transitions, 69 changer transitions 22/1083 dead transitions. [2022-12-11 19:30:30,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 863 places, 1083 transitions, 7007 flow [2022-12-11 19:30:30,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-11 19:30:30,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-11 19:30:30,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 14173 transitions. [2022-12-11 19:30:30,518 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8558574879227053 [2022-12-11 19:30:30,518 INFO L175 Difference]: Start difference. First operand has 842 places, 935 transitions, 5299 flow. Second operand 24 states and 14173 transitions. [2022-12-11 19:30:30,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 863 places, 1083 transitions, 7007 flow [2022-12-11 19:30:39,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 860 places, 1083 transitions, 6875 flow, removed 63 selfloop flow, removed 3 redundant places. [2022-12-11 19:30:39,504 INFO L231 Difference]: Finished difference. Result has 880 places, 963 transitions, 5864 flow [2022-12-11 19:30:39,505 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=690, PETRI_DIFFERENCE_MINUEND_FLOW=5199, PETRI_DIFFERENCE_MINUEND_PLACES=837, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=935, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=881, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=5864, PETRI_PLACES=880, PETRI_TRANSITIONS=963} [2022-12-11 19:30:39,505 INFO L295 CegarLoopForPetriNet]: 614 programPoint places, 266 predicate places. [2022-12-11 19:30:39,505 INFO L495 AbstractCegarLoop]: Abstraction has has 880 places, 963 transitions, 5864 flow [2022-12-11 19:30:39,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 587.8) internal successors, (5878), 10 states have internal predecessors, (5878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:30:39,506 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:30:39,506 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:30:39,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-11 19:30:39,507 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)] === [2022-12-11 19:30:39,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:30:39,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1559316718, now seen corresponding path program 5 times [2022-12-11 19:30:39,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:30:39,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494536886] [2022-12-11 19:30:39,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:30:39,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:30:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:30:40,111 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-12-11 19:30:40,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:30:40,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494536886] [2022-12-11 19:30:40,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494536886] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:30:40,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:30:40,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-11 19:30:40,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346541507] [2022-12-11 19:30:40,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:30:40,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 19:30:40,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:30:40,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 19:30:40,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-11 19:30:40,116 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 575 out of 690 [2022-12-11 19:30:40,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 880 places, 963 transitions, 5864 flow. Second operand has 10 states, 10 states have (on average 580.1) internal successors, (5801), 10 states have internal predecessors, (5801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:30:40,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:30:40,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 575 of 690 [2022-12-11 19:30:40,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand