/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 19:21:21,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 19:21:21,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 19:21:21,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 19:21:21,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 19:21:21,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 19:21:21,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 19:21:21,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 19:21:21,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 19:21:21,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 19:21:21,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 19:21:21,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 19:21:21,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 19:21:21,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 19:21:21,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 19:21:21,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 19:21:21,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 19:21:21,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 19:21:21,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 19:21:21,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 19:21:21,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 19:21:21,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 19:21:21,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 19:21:21,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 19:21:21,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 19:21:21,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 19:21:21,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 19:21:21,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 19:21:21,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 19:21:21,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 19:21:21,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 19:21:21,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 19:21:21,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 19:21:21,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 19:21:21,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 19:21:21,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 19:21:21,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 19:21:21,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 19:21:21,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 19:21:21,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 19:21:21,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 19:21:21,368 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 19:21:21,397 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 19:21:21,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 19:21:21,399 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 19:21:21,399 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 19:21:21,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 19:21:21,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 19:21:21,401 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 19:21:21,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 19:21:21,402 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 19:21:21,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 19:21:21,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 19:21:21,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 19:21:21,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 19:21:21,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 19:21:21,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 19:21:21,403 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 19:21:21,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 19:21:21,403 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 19:21:21,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 19:21:21,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 19:21:21,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 19:21:21,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 19:21:21,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 19:21:21,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 19:21:21,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 19:21:21,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 19:21:21,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 19:21:21,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 19:21:21,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 19:21:21,405 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 19:21:21,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 19:21:21,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 19:21:21,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 19:21:21,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 19:21:21,743 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 19:21:21,743 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 19:21:21,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2022-12-12 19:21:22,838 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 19:21:23,060 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 19:21:23,060 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2022-12-12 19:21:23,066 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6897853cf/2b985a1797e84ea6a6b6bc5e539a0c72/FLAGd30f8e74f [2022-12-12 19:21:23,080 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6897853cf/2b985a1797e84ea6a6b6bc5e539a0c72 [2022-12-12 19:21:23,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 19:21:23,082 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 19:21:23,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 19:21:23,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 19:21:23,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 19:21:23,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 07:21:23" (1/1) ... [2022-12-12 19:21:23,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d21016c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:21:23, skipping insertion in model container [2022-12-12 19:21:23,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 07:21:23" (1/1) ... [2022-12-12 19:21:23,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 19:21:23,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 19:21:23,278 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-trans.wvr.c[6450,6463] [2022-12-12 19:21:23,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 19:21:23,299 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 19:21:23,362 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-trans.wvr.c[6450,6463] [2022-12-12 19:21:23,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 19:21:23,385 INFO L208 MainTranslator]: Completed translation [2022-12-12 19:21:23,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:21:23 WrapperNode [2022-12-12 19:21:23,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 19:21:23,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 19:21:23,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 19:21:23,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 19:21:23,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:21:23" (1/1) ... [2022-12-12 19:21:23,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:21:23" (1/1) ... [2022-12-12 19:21:23,440 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 574 [2022-12-12 19:21:23,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 19:21:23,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 19:21:23,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 19:21:23,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 19:21:23,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:21:23" (1/1) ... [2022-12-12 19:21:23,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:21:23" (1/1) ... [2022-12-12 19:21:23,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:21:23" (1/1) ... [2022-12-12 19:21:23,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:21:23" (1/1) ... [2022-12-12 19:21:23,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:21:23" (1/1) ... [2022-12-12 19:21:23,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:21:23" (1/1) ... [2022-12-12 19:21:23,485 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:21:23" (1/1) ... [2022-12-12 19:21:23,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:21:23" (1/1) ... [2022-12-12 19:21:23,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 19:21:23,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 19:21:23,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 19:21:23,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 19:21:23,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:21:23" (1/1) ... [2022-12-12 19:21:23,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 19:21:23,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:21:23,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 19:21:23,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 19:21:23,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 19:21:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 19:21:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 19:21:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 19:21:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 19:21:23,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 19:21:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 19:21:23,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 19:21:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 19:21:23,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 19:21:23,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 19:21:23,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 19:21:23,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 19:21:23,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 19:21:23,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 19:21:23,568 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 19:21:23,693 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 19:21:23,696 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 19:21:24,493 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 19:21:24,508 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 19:21:24,508 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-12 19:21:24,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 07:21:24 BoogieIcfgContainer [2022-12-12 19:21:24,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 19:21:24,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 19:21:24,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 19:21:24,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 19:21:24,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 07:21:23" (1/3) ... [2022-12-12 19:21:24,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535e0a80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 07:21:24, skipping insertion in model container [2022-12-12 19:21:24,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:21:23" (2/3) ... [2022-12-12 19:21:24,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535e0a80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 07:21:24, skipping insertion in model container [2022-12-12 19:21:24,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 07:21:24" (3/3) ... [2022-12-12 19:21:24,520 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2022-12-12 19:21:24,558 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 19:21:24,558 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 19:21:24,558 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 19:21:24,714 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 19:21:24,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 627 places, 690 transitions, 1404 flow [2022-12-12 19:21:25,043 INFO L130 PetriNetUnfolder]: 73/687 cut-off events. [2022-12-12 19:21:25,043 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 19:21:25,068 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. [2022-12-12 19:21:25,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 627 places, 690 transitions, 1404 flow [2022-12-12 19:21:25,132 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 614 places, 677 transitions, 1372 flow [2022-12-12 19:21:25,134 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 19:21:25,157 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 614 places, 677 transitions, 1372 flow [2022-12-12 19:21:25,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 614 places, 677 transitions, 1372 flow [2022-12-12 19:21:25,312 INFO L130 PetriNetUnfolder]: 73/677 cut-off events. [2022-12-12 19:21:25,313 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 19:21:25,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 677 events. 73/677 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2359 event pairs, 0 based on Foata normal form. 0/604 useless extension candidates. Maximal degree in co-relation 507. Up to 2 conditions per place. [2022-12-12 19:21:25,396 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 614 places, 677 transitions, 1372 flow [2022-12-12 19:21:25,397 INFO L226 LiptonReduction]: Number of co-enabled transitions 153384 [2022-12-12 19:21:52,261 INFO L241 LiptonReduction]: Total number of compositions: 632 [2022-12-12 19:21:52,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 19:21:52,281 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;@61640c85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 19:21:52,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 19:21:52,290 INFO L130 PetriNetUnfolder]: 13/48 cut-off events. [2022-12-12 19:21:52,290 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 19:21:52,291 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:21:52,292 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:21:52,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:21:52,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:21:52,296 INFO L85 PathProgramCache]: Analyzing trace with hash -759560692, now seen corresponding path program 1 times [2022-12-12 19:21:52,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:21:52,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784824365] [2022-12-12 19:21:52,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:21:52,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:21:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:21:52,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:21:52,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:21:52,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784824365] [2022-12-12 19:21:52,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784824365] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:21:52,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:21:52,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 19:21:52,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120058834] [2022-12-12 19:21:52,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:21:52,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 19:21:52,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:21:52,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 19:21:52,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 19:21:52,741 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:21:52,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 49 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:21:52,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:21:52,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:21:52,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:21:53,395 INFO L130 PetriNetUnfolder]: 2776/3671 cut-off events. [2022-12-12 19:21:53,395 INFO L131 PetriNetUnfolder]: For 168/168 co-relation queries the response was YES. [2022-12-12 19:21:53,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7603 conditions, 3671 events. 2776/3671 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12995 event pairs, 1657 based on Foata normal form. 0/2552 useless extension candidates. Maximal degree in co-relation 7072. Up to 3669 conditions per place. [2022-12-12 19:21:53,414 INFO L137 encePairwiseOnDemand]: 42/49 looper letters, 46 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2022-12-12 19:21:53,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 226 flow [2022-12-12 19:21:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 19:21:53,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 19:21:53,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2022-12-12 19:21:53,424 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3741496598639456 [2022-12-12 19:21:53,427 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2022-12-12 19:21:53,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 52 transitions, 226 flow [2022-12-12 19:21:53,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 52 transitions, 226 flow [2022-12-12 19:21:53,444 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 226 flow [2022-12-12 19:21:53,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:21:53,444 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:21:53,444 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] [2022-12-12 19:21:53,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 19:21:53,445 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:21:53,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:21:53,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1800656135, now seen corresponding path program 1 times [2022-12-12 19:21:53,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:21:53,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033564269] [2022-12-12 19:21:53,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:21:53,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:21:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:21:53,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 19:21:53,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:21:53,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033564269] [2022-12-12 19:21:53,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033564269] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:21:53,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842697361] [2022-12-12 19:21:53,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:21:53,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:21:53,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:21:53,611 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) [2022-12-12 19:21:53,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 19:21:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:21:53,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-12 19:21:53,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:21:53,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 19:21:53,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:21:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 19:21:53,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842697361] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:21:53,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:21:53,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-12-12 19:21:53,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854201395] [2022-12-12 19:21:53,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:21:53,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 19:21:53,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:21:53,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 19:21:53,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-12 19:21:53,886 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:21:53,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 52 transitions, 226 flow. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:21:53,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:21:53,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:21:53,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:21:54,556 INFO L130 PetriNetUnfolder]: 2776/3680 cut-off events. [2022-12-12 19:21:54,556 INFO L131 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2022-12-12 19:21:54,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11302 conditions, 3680 events. 2776/3680 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13053 event pairs, 1657 based on Foata normal form. 0/2561 useless extension candidates. Maximal degree in co-relation 10498. Up to 3678 conditions per place. [2022-12-12 19:21:54,580 INFO L137 encePairwiseOnDemand]: 42/49 looper letters, 46 selfloop transitions, 15 changer transitions 0/61 dead transitions. [2022-12-12 19:21:54,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 61 transitions, 384 flow [2022-12-12 19:21:54,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 19:21:54,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 19:21:54,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2022-12-12 19:21:54,584 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.23809523809523808 [2022-12-12 19:21:54,585 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2022-12-12 19:21:54,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 61 transitions, 384 flow [2022-12-12 19:21:54,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 61 transitions, 384 flow [2022-12-12 19:21:54,605 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 384 flow [2022-12-12 19:21:54,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:21:54,609 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:21:54,609 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:21:54,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 19:21:54,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:21:54,814 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:21:54,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:21:54,815 INFO L85 PathProgramCache]: Analyzing trace with hash -572286552, now seen corresponding path program 2 times [2022-12-12 19:21:54,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:21:54,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279786860] [2022-12-12 19:21:54,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:21:54,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:21:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:21:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-12 19:21:55,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:21:55,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279786860] [2022-12-12 19:21:55,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279786860] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:21:55,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129586847] [2022-12-12 19:21:55,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 19:21:55,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:21:55,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:21:55,044 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) [2022-12-12 19:21:55,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 19:21:55,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-12 19:21:55,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 19:21:55,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 19:21:55,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:21:56,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-12 19:21:56,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 19:21:56,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129586847] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:21:56,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 19:21:56,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2022-12-12 19:21:56,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213055332] [2022-12-12 19:21:56,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:21:56,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 19:21:56,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:21:56,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 19:21:56,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-12 19:21:56,480 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:21:56,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 384 flow. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:21:56,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:21:56,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:21:56,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:21:57,861 INFO L130 PetriNetUnfolder]: 3116/4199 cut-off events. [2022-12-12 19:21:57,862 INFO L131 PetriNetUnfolder]: For 233/233 co-relation queries the response was YES. [2022-12-12 19:21:57,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17127 conditions, 4199 events. 3116/4199 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16254 event pairs, 1657 based on Foata normal form. 1/2929 useless extension candidates. Maximal degree in co-relation 14948. Up to 4197 conditions per place. [2022-12-12 19:21:57,887 INFO L137 encePairwiseOnDemand]: 45/49 looper letters, 99 selfloop transitions, 2 changer transitions 7/108 dead transitions. [2022-12-12 19:21:57,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 108 transitions, 918 flow [2022-12-12 19:21:57,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 19:21:57,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 19:21:57,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2022-12-12 19:21:57,889 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.39591836734693875 [2022-12-12 19:21:57,890 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2022-12-12 19:21:57,890 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 108 transitions, 918 flow [2022-12-12 19:21:57,910 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 101 transitions, 853 flow [2022-12-12 19:21:57,911 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 101 transitions, 853 flow [2022-12-12 19:21:57,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:21:57,911 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:21:57,911 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:21:57,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-12 19:21:58,117 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,SelfDestructingSolverStorable2 [2022-12-12 19:21:58,117 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:21:58,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:21:58,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1438852220, now seen corresponding path program 3 times [2022-12-12 19:21:58,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:21:58,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34938912] [2022-12-12 19:21:58,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:21:58,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:21:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:21:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-12 19:21:58,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:21:58,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34938912] [2022-12-12 19:21:58,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34938912] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:21:58,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800359155] [2022-12-12 19:21:58,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 19:21:58,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:21:58,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:21:58,291 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) [2022-12-12 19:21:58,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 19:21:58,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-12 19:21:58,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 19:21:58,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 19:21:58,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:21:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-12 19:21:59,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 19:21:59,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800359155] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:21:59,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 19:21:59,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-12-12 19:21:59,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084712830] [2022-12-12 19:21:59,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:21:59,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 19:21:59,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:21:59,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 19:21:59,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-12 19:21:59,279 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:21:59,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 101 transitions, 853 flow. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:21:59,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:21:59,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:21:59,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:22:00,487 INFO L130 PetriNetUnfolder]: 3316/4549 cut-off events. [2022-12-12 19:22:00,487 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2022-12-12 19:22:00,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23119 conditions, 4549 events. 3316/4549 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 18950 event pairs, 1657 based on Foata normal form. 1/3185 useless extension candidates. Maximal degree in co-relation 20056. Up to 4547 conditions per place. [2022-12-12 19:22:00,514 INFO L137 encePairwiseOnDemand]: 45/49 looper letters, 162 selfloop transitions, 4 changer transitions 7/173 dead transitions. [2022-12-12 19:22:00,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 173 transitions, 1826 flow [2022-12-12 19:22:00,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 19:22:00,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 19:22:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2022-12-12 19:22:00,522 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4163265306122449 [2022-12-12 19:22:00,523 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2022-12-12 19:22:00,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 173 transitions, 1826 flow [2022-12-12 19:22:00,548 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 166 transitions, 1747 flow [2022-12-12 19:22:00,549 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 166 transitions, 1747 flow [2022-12-12 19:22:00,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:00,549 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:22:00,549 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:22:00,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-12 19:22:00,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:22:00,754 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:22:00,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:22:00,755 INFO L85 PathProgramCache]: Analyzing trace with hash 237219498, now seen corresponding path program 4 times [2022-12-12 19:22:00,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:22:00,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420383628] [2022-12-12 19:22:00,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:22:00,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:22:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:22:00,972 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-12 19:22:00,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:22:00,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420383628] [2022-12-12 19:22:00,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420383628] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:22:00,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550485708] [2022-12-12 19:22:00,972 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 19:22:00,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:22:00,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:22:00,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 19:22:00,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 19:22:01,336 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 19:22:01,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 19:22:01,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 19:22:01,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:22:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-12 19:22:01,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:22:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-12 19:22:01,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550485708] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:22:01,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:22:01,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-12-12 19:22:01,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086765163] [2022-12-12 19:22:01,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:22:01,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-12 19:22:01,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:22:01,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-12 19:22:01,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-12-12 19:22:01,481 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:22:01,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 166 transitions, 1747 flow. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:01,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:22:01,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:22:01,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:22:02,242 INFO L130 PetriNetUnfolder]: 3315/4544 cut-off events. [2022-12-12 19:22:02,242 INFO L131 PetriNetUnfolder]: For 269/269 co-relation queries the response was YES. [2022-12-12 19:22:02,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27636 conditions, 4544 events. 3315/4544 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18850 event pairs, 1657 based on Foata normal form. 0/3181 useless extension candidates. Maximal degree in co-relation 23996. Up to 4542 conditions per place. [2022-12-12 19:22:02,267 INFO L137 encePairwiseOnDemand]: 42/49 looper letters, 151 selfloop transitions, 18 changer transitions 0/169 dead transitions. [2022-12-12 19:22:02,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 169 transitions, 2115 flow [2022-12-12 19:22:02,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 19:22:02,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 19:22:02,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 67 transitions. [2022-12-12 19:22:02,269 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.19533527696793002 [2022-12-12 19:22:02,270 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2022-12-12 19:22:02,270 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 169 transitions, 2115 flow [2022-12-12 19:22:02,293 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 169 transitions, 2115 flow [2022-12-12 19:22:02,293 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 169 transitions, 2115 flow [2022-12-12 19:22:02,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:02,294 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:22:02,294 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:22:02,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 19:22:02,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:22:02,508 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:22:02,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:22:02,508 INFO L85 PathProgramCache]: Analyzing trace with hash -251341777, now seen corresponding path program 5 times [2022-12-12 19:22:02,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:22:02,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515158938] [2022-12-12 19:22:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:22:02,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:22:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:22:03,352 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 19:22:03,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:22:03,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515158938] [2022-12-12 19:22:03,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515158938] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:22:03,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:22:03,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 19:22:03,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671650600] [2022-12-12 19:22:03,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:22:03,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 19:22:03,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:22:03,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 19:22:03,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 19:22:03,354 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:22:03,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 169 transitions, 2115 flow. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:03,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:22:03,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:22:03,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:22:05,575 INFO L130 PetriNetUnfolder]: 9117/12465 cut-off events. [2022-12-12 19:22:05,575 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2022-12-12 19:22:05,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88022 conditions, 12465 events. 9117/12465 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 63470 event pairs, 748 based on Foata normal form. 1/8717 useless extension candidates. Maximal degree in co-relation 85821. Up to 12463 conditions per place. [2022-12-12 19:22:05,652 INFO L137 encePairwiseOnDemand]: 36/49 looper letters, 379 selfloop transitions, 74 changer transitions 1/454 dead transitions. [2022-12-12 19:22:05,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 454 transitions, 6566 flow [2022-12-12 19:22:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 19:22:05,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 19:22:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2022-12-12 19:22:05,654 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2022-12-12 19:22:05,655 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2022-12-12 19:22:05,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 454 transitions, 6566 flow [2022-12-12 19:22:05,727 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 453 transitions, 6549 flow [2022-12-12 19:22:05,727 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 453 transitions, 6549 flow [2022-12-12 19:22:05,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:05,728 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:22:05,728 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:22:05,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 19:22:05,728 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:22:05,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:22:05,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1911207887, now seen corresponding path program 6 times [2022-12-12 19:22:05,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:22:05,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964859125] [2022-12-12 19:22:05,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:22:05,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:22:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:22:06,530 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 19:22:06,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:22:06,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964859125] [2022-12-12 19:22:06,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964859125] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:22:06,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:22:06,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 19:22:06,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275552846] [2022-12-12 19:22:06,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:22:06,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 19:22:06,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:22:06,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 19:22:06,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 19:22:06,536 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:22:06,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 453 transitions, 6549 flow. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:06,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:22:06,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:22:06,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:22:09,237 INFO L130 PetriNetUnfolder]: 10826/14876 cut-off events. [2022-12-12 19:22:09,237 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2022-12-12 19:22:09,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119830 conditions, 14876 events. 10826/14876 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 78150 event pairs, 846 based on Foata normal form. 1/10444 useless extension candidates. Maximal degree in co-relation 117096. Up to 14874 conditions per place. [2022-12-12 19:22:09,338 INFO L137 encePairwiseOnDemand]: 36/49 looper letters, 494 selfloop transitions, 81 changer transitions 1/576 dead transitions. [2022-12-12 19:22:09,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 576 transitions, 9456 flow [2022-12-12 19:22:09,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 19:22:09,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 19:22:09,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2022-12-12 19:22:09,340 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6204081632653061 [2022-12-12 19:22:09,340 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2022-12-12 19:22:09,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 576 transitions, 9456 flow [2022-12-12 19:22:09,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 575 transitions, 9437 flow [2022-12-12 19:22:09,428 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 575 transitions, 9437 flow [2022-12-12 19:22:09,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:09,429 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:22:09,429 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:22:09,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 19:22:09,429 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:22:09,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:22:09,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1405598905, now seen corresponding path program 7 times [2022-12-12 19:22:09,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:22:09,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577631073] [2022-12-12 19:22:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:22:09,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:22:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:22:10,167 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 19:22:10,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:22:10,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577631073] [2022-12-12 19:22:10,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577631073] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:22:10,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:22:10,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 19:22:10,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977373700] [2022-12-12 19:22:10,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:22:10,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 19:22:10,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:22:10,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 19:22:10,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 19:22:10,170 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:22:10,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 575 transitions, 9437 flow. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:10,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:22:10,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:22:10,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:22:13,423 INFO L130 PetriNetUnfolder]: 10879/14957 cut-off events. [2022-12-12 19:22:13,423 INFO L131 PetriNetUnfolder]: For 951/951 co-relation queries the response was YES. [2022-12-12 19:22:13,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135435 conditions, 14957 events. 10879/14957 cut-off events. For 951/951 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 78750 event pairs, 846 based on Foata normal form. 1/10497 useless extension candidates. Maximal degree in co-relation 132391. Up to 14955 conditions per place. [2022-12-12 19:22:13,511 INFO L137 encePairwiseOnDemand]: 38/49 looper letters, 557 selfloop transitions, 30 changer transitions 7/594 dead transitions. [2022-12-12 19:22:13,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 594 transitions, 10929 flow [2022-12-12 19:22:13,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 19:22:13,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 19:22:13,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2022-12-12 19:22:13,513 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4775510204081633 [2022-12-12 19:22:13,514 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2022-12-12 19:22:13,514 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 594 transitions, 10929 flow [2022-12-12 19:22:13,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 587 transitions, 10794 flow [2022-12-12 19:22:13,585 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 587 transitions, 10794 flow [2022-12-12 19:22:13,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:13,585 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:22:13,586 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:22:13,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 19:22:13,586 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:22:13,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:22:13,586 INFO L85 PathProgramCache]: Analyzing trace with hash -743982027, now seen corresponding path program 8 times [2022-12-12 19:22:13,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:22:13,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004731891] [2022-12-12 19:22:13,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:22:13,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:22:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:22:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 19:22:14,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:22:14,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004731891] [2022-12-12 19:22:14,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004731891] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:22:14,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:22:14,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 19:22:14,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706118532] [2022-12-12 19:22:14,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:22:14,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 19:22:14,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:22:14,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 19:22:14,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 19:22:14,290 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:22:14,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 587 transitions, 10794 flow. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:14,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:22:14,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:22:14,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:22:17,392 INFO L130 PetriNetUnfolder]: 11083/15267 cut-off events. [2022-12-12 19:22:17,392 INFO L131 PetriNetUnfolder]: For 962/962 co-relation queries the response was YES. [2022-12-12 19:22:17,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153517 conditions, 15267 events. 11083/15267 cut-off events. For 962/962 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 81067 event pairs, 846 based on Foata normal form. 1/10713 useless extension candidates. Maximal degree in co-relation 149983. Up to 15265 conditions per place. [2022-12-12 19:22:17,484 INFO L137 encePairwiseOnDemand]: 38/49 looper letters, 569 selfloop transitions, 60 changer transitions 1/630 dead transitions. [2022-12-12 19:22:17,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 630 transitions, 12846 flow [2022-12-12 19:22:17,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 19:22:17,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 19:22:17,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2022-12-12 19:22:17,492 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2022-12-12 19:22:17,494 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2022-12-12 19:22:17,494 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 630 transitions, 12846 flow [2022-12-12 19:22:17,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 629 transitions, 12823 flow [2022-12-12 19:22:17,583 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 629 transitions, 12823 flow [2022-12-12 19:22:17,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:17,583 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:22:17,583 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:22:17,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 19:22:17,584 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:22:17,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:22:17,584 INFO L85 PathProgramCache]: Analyzing trace with hash -495473432, now seen corresponding path program 1 times [2022-12-12 19:22:17,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:22:17,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750428419] [2022-12-12 19:22:17,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:22:17,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:22:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:22:17,736 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 19:22:17,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:22:17,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750428419] [2022-12-12 19:22:17,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750428419] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:22:17,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:22:17,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:22:17,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902558213] [2022-12-12 19:22:17,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:22:17,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 19:22:17,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:22:17,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 19:22:17,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 19:22:17,738 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:22:17,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 629 transitions, 12823 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:17,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:22:17,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:22:17,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:22:21,808 INFO L130 PetriNetUnfolder]: 15713/21496 cut-off events. [2022-12-12 19:22:21,808 INFO L131 PetriNetUnfolder]: For 1041/1041 co-relation queries the response was YES. [2022-12-12 19:22:21,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237523 conditions, 21496 events. 15713/21496 cut-off events. For 1041/1041 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 114037 event pairs, 670 based on Foata normal form. 0/15263 useless extension candidates. Maximal degree in co-relation 233428. Up to 21494 conditions per place. [2022-12-12 19:22:22,199 INFO L137 encePairwiseOnDemand]: 45/49 looper letters, 801 selfloop transitions, 39 changer transitions 0/840 dead transitions. [2022-12-12 19:22:22,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 840 transitions, 18747 flow [2022-12-12 19:22:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 19:22:22,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 19:22:22,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2022-12-12 19:22:22,201 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2022-12-12 19:22:22,203 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 38 predicate places. [2022-12-12 19:22:22,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 840 transitions, 18747 flow [2022-12-12 19:22:22,322 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 840 transitions, 18747 flow [2022-12-12 19:22:22,323 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 840 transitions, 18747 flow [2022-12-12 19:22:22,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:22,323 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:22:22,323 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:22:22,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 19:22:22,323 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:22:22,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:22:22,324 INFO L85 PathProgramCache]: Analyzing trace with hash 918667252, now seen corresponding path program 1 times [2022-12-12 19:22:22,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:22:22,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557211371] [2022-12-12 19:22:22,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:22:22,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:22:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:22:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 19:22:22,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:22:22,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557211371] [2022-12-12 19:22:22,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557211371] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:22:22,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:22:22,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:22:22,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280796177] [2022-12-12 19:22:22,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:22:22,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 19:22:22,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:22:22,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 19:22:22,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 19:22:22,470 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:22:22,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 840 transitions, 18747 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:22,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:22:22,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:22:22,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:22:30,360 INFO L130 PetriNetUnfolder]: 26438/35875 cut-off events. [2022-12-12 19:22:30,361 INFO L131 PetriNetUnfolder]: For 1717/1717 co-relation queries the response was YES. [2022-12-12 19:22:30,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432177 conditions, 35875 events. 26438/35875 cut-off events. For 1717/1717 co-relation queries the response was YES. Maximal size of possible extension queue 911. Compared 196029 event pairs, 740 based on Foata normal form. 0/25770 useless extension candidates. Maximal degree in co-relation 427720. Up to 35873 conditions per place. [2022-12-12 19:22:30,615 INFO L137 encePairwiseOnDemand]: 45/49 looper letters, 1159 selfloop transitions, 47 changer transitions 0/1206 dead transitions. [2022-12-12 19:22:30,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 1206 transitions, 29265 flow [2022-12-12 19:22:30,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 19:22:30,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 19:22:30,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2022-12-12 19:22:30,617 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2022-12-12 19:22:30,617 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2022-12-12 19:22:30,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 1206 transitions, 29265 flow [2022-12-12 19:22:30,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 1206 transitions, 29265 flow [2022-12-12 19:22:30,835 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 1206 transitions, 29265 flow [2022-12-12 19:22:30,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:30,835 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:22:30,836 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:22:30,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 19:22:30,836 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:22:30,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:22:30,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1775316422, now seen corresponding path program 1 times [2022-12-12 19:22:30,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:22:30,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909494186] [2022-12-12 19:22:30,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:22:30,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:22:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:22:30,987 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 19:22:30,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:22:30,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909494186] [2022-12-12 19:22:30,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909494186] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:22:30,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:22:30,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:22:30,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857413772] [2022-12-12 19:22:30,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:22:30,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 19:22:30,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:22:30,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 19:22:30,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 19:22:30,991 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:22:30,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 1206 transitions, 29265 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:30,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:22:30,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:22:30,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:22:41,396 INFO L130 PetriNetUnfolder]: 29273/39798 cut-off events. [2022-12-12 19:22:41,396 INFO L131 PetriNetUnfolder]: For 1828/1828 co-relation queries the response was YES. [2022-12-12 19:22:41,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519091 conditions, 39798 events. 29273/39798 cut-off events. For 1828/1828 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 220720 event pairs, 616 based on Foata normal form. 0/29321 useless extension candidates. Maximal degree in co-relation 514294. Up to 39796 conditions per place. [2022-12-12 19:22:41,839 INFO L137 encePairwiseOnDemand]: 46/49 looper letters, 1497 selfloop transitions, 56 changer transitions 18/1571 dead transitions. [2022-12-12 19:22:41,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 1571 transitions, 41242 flow [2022-12-12 19:22:41,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 19:22:41,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 19:22:41,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2022-12-12 19:22:41,840 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5578231292517006 [2022-12-12 19:22:41,841 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 42 predicate places. [2022-12-12 19:22:41,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 1571 transitions, 41242 flow [2022-12-12 19:22:42,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 1553 transitions, 40756 flow [2022-12-12 19:22:42,149 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 1553 transitions, 40756 flow [2022-12-12 19:22:42,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:42,149 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:22:42,149 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:22:42,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-12 19:22:42,150 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:22:42,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:22:42,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1002260434, now seen corresponding path program 1 times [2022-12-12 19:22:42,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:22:42,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662046878] [2022-12-12 19:22:42,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:22:42,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:22:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:22:42,509 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 19:22:42,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:22:42,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662046878] [2022-12-12 19:22:42,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662046878] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:22:42,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:22:42,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:22:42,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771659087] [2022-12-12 19:22:42,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:22:42,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 19:22:42,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:22:42,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 19:22:42,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 19:22:42,512 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:22:42,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 1553 transitions, 40756 flow. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:42,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:22:42,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:22:42,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:22:54,421 INFO L130 PetriNetUnfolder]: 29958/40831 cut-off events. [2022-12-12 19:22:54,421 INFO L131 PetriNetUnfolder]: For 2177/2177 co-relation queries the response was YES. [2022-12-12 19:22:54,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573445 conditions, 40831 events. 29958/40831 cut-off events. For 2177/2177 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 228223 event pairs, 412 based on Foata normal form. 4/30112 useless extension candidates. Maximal degree in co-relation 567802. Up to 40829 conditions per place. [2022-12-12 19:22:54,773 INFO L137 encePairwiseOnDemand]: 45/49 looper letters, 1622 selfloop transitions, 21 changer transitions 175/1818 dead transitions. [2022-12-12 19:22:54,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 1818 transitions, 51363 flow [2022-12-12 19:22:54,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 19:22:54,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 19:22:54,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2022-12-12 19:22:54,774 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5051020408163265 [2022-12-12 19:22:54,775 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 45 predicate places. [2022-12-12 19:22:54,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 1818 transitions, 51363 flow [2022-12-12 19:22:55,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 1643 transitions, 46385 flow [2022-12-12 19:22:55,033 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 1643 transitions, 46385 flow [2022-12-12 19:22:55,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:55,033 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:22:55,033 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:22:55,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-12 19:22:55,034 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:22:55,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:22:55,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1519137846, now seen corresponding path program 2 times [2022-12-12 19:22:55,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:22:55,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515653591] [2022-12-12 19:22:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:22:55,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:22:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:22:55,345 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 19:22:55,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:22:55,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515653591] [2022-12-12 19:22:55,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515653591] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:22:55,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:22:55,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:22:55,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104215241] [2022-12-12 19:22:55,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:22:55,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 19:22:55,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:22:55,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 19:22:55,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 19:22:55,347 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:22:55,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 1643 transitions, 46385 flow. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:22:55,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:22:55,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:22:55,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:23:07,456 INFO L130 PetriNetUnfolder]: 28936/39351 cut-off events. [2022-12-12 19:23:07,456 INFO L131 PetriNetUnfolder]: For 1866/1866 co-relation queries the response was YES. [2022-12-12 19:23:07,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591954 conditions, 39351 events. 28936/39351 cut-off events. For 1866/1866 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 217677 event pairs, 398 based on Foata normal form. 4/29086 useless extension candidates. Maximal degree in co-relation 586834. Up to 39349 conditions per place. [2022-12-12 19:23:07,783 INFO L137 encePairwiseOnDemand]: 46/49 looper letters, 1445 selfloop transitions, 8 changer transitions 186/1639 dead transitions. [2022-12-12 19:23:07,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 1639 transitions, 49551 flow [2022-12-12 19:23:07,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 19:23:07,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 19:23:07,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2022-12-12 19:23:07,784 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.49489795918367346 [2022-12-12 19:23:07,784 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 47 predicate places. [2022-12-12 19:23:07,784 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 1639 transitions, 49551 flow [2022-12-12 19:23:08,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 1453 transitions, 43875 flow [2022-12-12 19:23:08,043 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 1453 transitions, 43875 flow [2022-12-12 19:23:08,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:23:08,043 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:23:08,043 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 19:23:08,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-12 19:23:08,043 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:23:08,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:23:08,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1560156454, now seen corresponding path program 1 times [2022-12-12 19:23:08,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:23:08,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249099039] [2022-12-12 19:23:08,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:23:08,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:23:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:23:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 19:23:08,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:23:08,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249099039] [2022-12-12 19:23:08,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249099039] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:23:08,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279171217] [2022-12-12 19:23:08,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:23:08,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:23:08,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:23:08,387 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 19:23:08,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 19:23:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:23:08,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 19:23:08,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:23:08,667 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 19:23:08,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:23:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 19:23:08,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279171217] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:23:08,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:23:08,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-12 19:23:08,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434029646] [2022-12-12 19:23:08,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:23:08,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 19:23:08,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:23:08,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 19:23:08,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-12 19:23:08,788 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:23:08,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 1453 transitions, 43875 flow. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:23:08,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:23:08,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:23:08,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:23:20,067 INFO L130 PetriNetUnfolder]: 28117/38215 cut-off events. [2022-12-12 19:23:20,068 INFO L131 PetriNetUnfolder]: For 1522/1522 co-relation queries the response was YES. [2022-12-12 19:23:20,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613012 conditions, 38215 events. 28117/38215 cut-off events. For 1522/1522 co-relation queries the response was YES. Maximal size of possible extension queue 944. Compared 209674 event pairs, 340 based on Foata normal form. 3/28305 useless extension candidates. Maximal degree in co-relation 608353. Up to 38213 conditions per place. [2022-12-12 19:23:20,461 INFO L137 encePairwiseOnDemand]: 45/49 looper letters, 1370 selfloop transitions, 17 changer transitions 191/1578 dead transitions. [2022-12-12 19:23:20,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 1578 transitions, 50826 flow [2022-12-12 19:23:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 19:23:20,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 19:23:20,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2022-12-12 19:23:20,462 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2022-12-12 19:23:20,463 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2022-12-12 19:23:20,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 1578 transitions, 50826 flow [2022-12-12 19:23:20,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 1387 transitions, 44669 flow [2022-12-12 19:23:20,723 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 1387 transitions, 44669 flow [2022-12-12 19:23:20,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:23:20,724 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:23:20,724 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 19:23:20,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 19:23:20,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-12 19:23:20,925 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:23:20,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:23:20,926 INFO L85 PathProgramCache]: Analyzing trace with hash 2110925509, now seen corresponding path program 1 times [2022-12-12 19:23:20,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:23:20,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034878301] [2022-12-12 19:23:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:23:20,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:23:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:23:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 19:23:21,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:23:21,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034878301] [2022-12-12 19:23:21,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034878301] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:23:21,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098423969] [2022-12-12 19:23:21,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:23:21,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:23:21,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:23:21,254 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 19:23:21,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 19:23:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:23:21,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-12 19:23:21,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:23:21,621 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 19:23:21,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:23:21,854 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 19:23:21,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098423969] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:23:21,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:23:21,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 8 [2022-12-12 19:23:21,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318353247] [2022-12-12 19:23:21,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:23:21,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 19:23:21,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:23:21,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 19:23:21,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-12 19:23:21,856 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:23:21,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 1387 transitions, 44669 flow. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:23:21,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:23:21,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:23:21,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:23:33,581 INFO L130 PetriNetUnfolder]: 28733/39299 cut-off events. [2022-12-12 19:23:33,581 INFO L131 PetriNetUnfolder]: For 1649/1649 co-relation queries the response was YES. [2022-12-12 19:23:33,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669656 conditions, 39299 events. 28733/39299 cut-off events. For 1649/1649 co-relation queries the response was YES. Maximal size of possible extension queue 1015. Compared 218096 event pairs, 64 based on Foata normal form. 5/29463 useless extension candidates. Maximal degree in co-relation 665124. Up to 39297 conditions per place. [2022-12-12 19:23:34,075 INFO L137 encePairwiseOnDemand]: 44/49 looper letters, 1228 selfloop transitions, 24 changer transitions 426/1678 dead transitions. [2022-12-12 19:23:34,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 1678 transitions, 57394 flow [2022-12-12 19:23:34,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 19:23:34,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 19:23:34,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2022-12-12 19:23:34,076 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4376417233560091 [2022-12-12 19:23:34,077 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 53 predicate places. [2022-12-12 19:23:34,077 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 1678 transitions, 57394 flow [2022-12-12 19:23:34,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 1252 transitions, 42820 flow [2022-12-12 19:23:34,333 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 1252 transitions, 42820 flow [2022-12-12 19:23:34,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:23:34,333 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:23:34,333 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 19:23:34,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 19:23:34,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-12 19:23:34,535 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:23:34,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:23:34,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1061864987, now seen corresponding path program 2 times [2022-12-12 19:23:34,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:23:34,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565993632] [2022-12-12 19:23:34,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:23:34,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:23:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:23:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 19:23:34,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:23:34,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565993632] [2022-12-12 19:23:34,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565993632] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:23:34,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:23:34,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 19:23:34,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462625529] [2022-12-12 19:23:34,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:23:34,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 19:23:34,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:23:34,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 19:23:34,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 19:23:34,943 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:23:34,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 1252 transitions, 42820 flow. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:23:34,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:23:34,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:23:34,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:23:46,475 INFO L130 PetriNetUnfolder]: 26795/36828 cut-off events. [2022-12-12 19:23:46,475 INFO L131 PetriNetUnfolder]: For 1390/1390 co-relation queries the response was YES. [2022-12-12 19:23:46,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664331 conditions, 36828 events. 26795/36828 cut-off events. For 1390/1390 co-relation queries the response was YES. Maximal size of possible extension queue 950. Compared 204608 event pairs, 120 based on Foata normal form. 4/28269 useless extension candidates. Maximal degree in co-relation 659777. Up to 36826 conditions per place. [2022-12-12 19:23:46,780 INFO L137 encePairwiseOnDemand]: 42/49 looper letters, 1152 selfloop transitions, 24 changer transitions 326/1502 dead transitions. [2022-12-12 19:23:46,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 1502 transitions, 54360 flow [2022-12-12 19:23:46,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 19:23:46,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 19:23:46,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2022-12-12 19:23:46,781 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.40233236151603496 [2022-12-12 19:23:46,782 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 56 predicate places. [2022-12-12 19:23:46,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 1502 transitions, 54360 flow [2022-12-12 19:23:47,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 1176 transitions, 42558 flow [2022-12-12 19:23:47,218 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 1176 transitions, 42558 flow [2022-12-12 19:23:47,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:23:47,219 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:23:47,219 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 19:23:47,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-12 19:23:47,219 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:23:47,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:23:47,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1128159508, now seen corresponding path program 2 times [2022-12-12 19:23:47,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:23:47,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408426453] [2022-12-12 19:23:47,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:23:47,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:23:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:23:47,502 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 19:23:47,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:23:47,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408426453] [2022-12-12 19:23:47,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408426453] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:23:47,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:23:47,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:23:47,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237801557] [2022-12-12 19:23:47,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:23:47,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 19:23:47,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:23:47,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 19:23:47,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 19:23:47,505 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:23:47,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 1176 transitions, 42558 flow. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:23:47,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:23:47,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:23:47,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:23:57,810 INFO L130 PetriNetUnfolder]: 24555/33383 cut-off events. [2022-12-12 19:23:57,810 INFO L131 PetriNetUnfolder]: For 1214/1214 co-relation queries the response was YES. [2022-12-12 19:23:57,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635625 conditions, 33383 events. 24555/33383 cut-off events. For 1214/1214 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 177769 event pairs, 120 based on Foata normal form. 5/25561 useless extension candidates. Maximal degree in co-relation 631232. Up to 33384 conditions per place. [2022-12-12 19:23:58,082 INFO L137 encePairwiseOnDemand]: 46/49 looper letters, 822 selfloop transitions, 0 changer transitions 349/1171 dead transitions. [2022-12-12 19:23:58,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 1171 transitions, 44720 flow [2022-12-12 19:23:58,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 19:23:58,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 19:23:58,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2022-12-12 19:23:58,083 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2022-12-12 19:23:58,083 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 50 predicate places. [2022-12-12 19:23:58,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 1171 transitions, 44720 flow [2022-12-12 19:23:58,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 822 transitions, 31380 flow [2022-12-12 19:23:58,433 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 822 transitions, 31380 flow [2022-12-12 19:23:58,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:23:58,434 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:23:58,434 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 19:23:58,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-12 19:23:58,434 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:23:58,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:23:58,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1370055505, now seen corresponding path program 1 times [2022-12-12 19:23:58,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:23:58,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544996423] [2022-12-12 19:23:58,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:23:58,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:23:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:24:00,019 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 19:24:00,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:24:00,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544996423] [2022-12-12 19:24:00,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544996423] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:24:00,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678645556] [2022-12-12 19:24:00,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:24:00,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:24:00,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:24:00,022 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 19:24:00,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 19:24:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:24:00,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-12 19:24:00,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:24:00,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2022-12-12 19:24:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 19:24:00,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:24:00,999 INFO L321 Elim1Store]: treesize reduction 27, result has 74.3 percent of original size [2022-12-12 19:24:01,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 119 [2022-12-12 19:24:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 19:24:01,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678645556] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:24:01,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:24:01,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 8] total 21 [2022-12-12 19:24:01,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651192510] [2022-12-12 19:24:01,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:24:01,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 19:24:01,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:24:01,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 19:24:01,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2022-12-12 19:24:01,075 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:24:01,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 822 transitions, 31380 flow. Second operand has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:24:01,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:24:01,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:24:01,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:24:25,101 INFO L130 PetriNetUnfolder]: 60290/81746 cut-off events. [2022-12-12 19:24:25,102 INFO L131 PetriNetUnfolder]: For 1908/1908 co-relation queries the response was YES. [2022-12-12 19:24:25,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1637956 conditions, 81746 events. 60290/81746 cut-off events. For 1908/1908 co-relation queries the response was YES. Maximal size of possible extension queue 2000. Compared 484635 event pairs, 141 based on Foata normal form. 0/64956 useless extension candidates. Maximal degree in co-relation 1619962. Up to 81747 conditions per place. [2022-12-12 19:24:26,048 INFO L137 encePairwiseOnDemand]: 34/49 looper letters, 2780 selfloop transitions, 363 changer transitions 0/3143 dead transitions. [2022-12-12 19:24:26,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 3143 transitions, 126029 flow [2022-12-12 19:24:26,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 19:24:26,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 19:24:26,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 242 transitions. [2022-12-12 19:24:26,050 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2022-12-12 19:24:26,050 INFO L295 CegarLoopForPetriNet]: 46 programPoint places, 50 predicate places. [2022-12-12 19:24:26,050 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 3143 transitions, 126029 flow [2022-12-12 19:24:26,913 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 3143 transitions, 126029 flow [2022-12-12 19:24:26,914 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 3143 transitions, 126029 flow [2022-12-12 19:24:26,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:24:26,914 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:24:26,914 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 19:24:26,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 19:24:27,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:24:27,115 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 19:24:27,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:24:27,116 INFO L85 PathProgramCache]: Analyzing trace with hash -942142619, now seen corresponding path program 2 times [2022-12-12 19:24:27,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:24:27,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705842194] [2022-12-12 19:24:27,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:24:27,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:24:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:24:28,782 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-12 19:24:28,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:24:28,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705842194] [2022-12-12 19:24:28,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705842194] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:24:28,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687434402] [2022-12-12 19:24:28,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 19:24:28,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:24:28,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:24:28,784 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 19:24:28,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 19:24:29,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 19:24:29,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 19:24:29,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-12 19:24:29,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:24:29,435 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 19:24:29,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 45 [2022-12-12 19:24:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 19:24:29,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:24:30,176 INFO L321 Elim1Store]: treesize reduction 33, result has 78.4 percent of original size [2022-12-12 19:24:30,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 173 [2022-12-12 19:24:30,257 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-12 19:24:30,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687434402] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:24:30,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:24:30,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 10] total 26 [2022-12-12 19:24:30,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940363443] [2022-12-12 19:24:30,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:24:30,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 19:24:30,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:24:30,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 19:24:30,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2022-12-12 19:24:30,258 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 49 [2022-12-12 19:24:30,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 3143 transitions, 126029 flow. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:24:30,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:24:30,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 49 [2022-12-12 19:24:30,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand