/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 18:50:06,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 18:50:06,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 18:50:06,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 18:50:06,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 18:50:06,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 18:50:06,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 18:50:06,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 18:50:06,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 18:50:06,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 18:50:06,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 18:50:06,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 18:50:06,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 18:50:06,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 18:50:06,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 18:50:06,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 18:50:06,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 18:50:06,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 18:50:06,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 18:50:06,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 18:50:06,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 18:50:06,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 18:50:06,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 18:50:06,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 18:50:06,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 18:50:06,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 18:50:06,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 18:50:06,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 18:50:06,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 18:50:06,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 18:50:06,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 18:50:06,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 18:50:06,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 18:50:06,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 18:50:06,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 18:50:06,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 18:50:06,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 18:50:06,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 18:50:06,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 18:50:06,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 18:50:06,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 18:50:06,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-05 18:50:06,445 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 18:50:06,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 18:50:06,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 18:50:06,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 18:50:06,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 18:50:06,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 18:50:06,449 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 18:50:06,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 18:50:06,449 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 18:50:06,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 18:50:06,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 18:50:06,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 18:50:06,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 18:50:06,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 18:50:06,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 18:50:06,450 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 18:50:06,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 18:50:06,450 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 18:50:06,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 18:50:06,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 18:50:06,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 18:50:06,451 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 18:50:06,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 18:50:06,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:50:06,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 18:50:06,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 18:50:06,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 18:50:06,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 18:50:06,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 18:50:06,451 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 18:50:06,452 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 18:50:06,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 18:50:06,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 18:50:06,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 18:50:06,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 18:50:06,710 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 18:50:06,710 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 18:50:06,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2022-12-05 18:50:07,772 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 18:50:07,933 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 18:50:07,933 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2022-12-05 18:50:07,941 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd8120096/a95fc31ea11f4d8b8be2d96d825050ce/FLAGb6c875700 [2022-12-05 18:50:07,959 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd8120096/a95fc31ea11f4d8b8be2d96d825050ce [2022-12-05 18:50:07,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 18:50:07,962 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 18:50:07,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 18:50:07,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 18:50:07,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 18:50:07,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:50:07" (1/1) ... [2022-12-05 18:50:07,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a01b44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:50:07, skipping insertion in model container [2022-12-05 18:50:07,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:50:07" (1/1) ... [2022-12-05 18:50:07,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 18:50:07,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 18:50:08,122 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-chromosome-opt-symm.wvr.c[2566,2579] [2022-12-05 18:50:08,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:50:08,136 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 18:50:08,168 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-chromosome-opt-symm.wvr.c[2566,2579] [2022-12-05 18:50:08,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:50:08,182 INFO L208 MainTranslator]: Completed translation [2022-12-05 18:50:08,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:50:08 WrapperNode [2022-12-05 18:50:08,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 18:50:08,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 18:50:08,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 18:50:08,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 18:50:08,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:50:08" (1/1) ... [2022-12-05 18:50:08,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:50:08" (1/1) ... [2022-12-05 18:50:08,229 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 174 [2022-12-05 18:50:08,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 18:50:08,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 18:50:08,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 18:50:08,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 18:50:08,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:50:08" (1/1) ... [2022-12-05 18:50:08,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:50:08" (1/1) ... [2022-12-05 18:50:08,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:50:08" (1/1) ... [2022-12-05 18:50:08,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:50:08" (1/1) ... [2022-12-05 18:50:08,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:50:08" (1/1) ... [2022-12-05 18:50:08,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:50:08" (1/1) ... [2022-12-05 18:50:08,263 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:50:08" (1/1) ... [2022-12-05 18:50:08,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:50:08" (1/1) ... [2022-12-05 18:50:08,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 18:50:08,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 18:50:08,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 18:50:08,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 18:50:08,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:50:08" (1/1) ... [2022-12-05 18:50:08,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:50:08,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:50:08,295 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) [2022-12-05 18:50:08,303 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 [2022-12-05 18:50:08,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 18:50:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 18:50:08,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 18:50:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 18:50:08,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 18:50:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 18:50:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 18:50:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 18:50:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 18:50:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 18:50:08,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 18:50:08,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 18:50:08,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 18:50:08,329 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 18:50:08,447 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 18:50:08,449 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 18:50:08,675 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 18:50:08,687 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 18:50:08,688 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-05 18:50:08,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:50:08 BoogieIcfgContainer [2022-12-05 18:50:08,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 18:50:08,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 18:50:08,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 18:50:08,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 18:50:08,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 06:50:07" (1/3) ... [2022-12-05 18:50:08,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d36d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:50:08, skipping insertion in model container [2022-12-05 18:50:08,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:50:08" (2/3) ... [2022-12-05 18:50:08,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d36d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:50:08, skipping insertion in model container [2022-12-05 18:50:08,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:50:08" (3/3) ... [2022-12-05 18:50:08,697 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2022-12-05 18:50:08,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 18:50:08,711 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 18:50:08,711 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 18:50:08,807 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 18:50:08,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 195 transitions, 406 flow [2022-12-05 18:50:08,886 INFO L130 PetriNetUnfolder]: 19/193 cut-off events. [2022-12-05 18:50:08,886 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 18:50:08,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 193 events. 19/193 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 215 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 136. Up to 3 conditions per place. [2022-12-05 18:50:08,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 195 transitions, 406 flow [2022-12-05 18:50:08,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 185 transitions, 382 flow [2022-12-05 18:50:08,903 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 18:50:08,907 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;@13bcc95f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 18:50:08,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-05 18:50:08,961 INFO L130 PetriNetUnfolder]: 19/184 cut-off events. [2022-12-05 18:50:08,961 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 18:50:08,962 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:08,962 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:08,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:08,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:08,966 INFO L85 PathProgramCache]: Analyzing trace with hash 951877082, now seen corresponding path program 1 times [2022-12-05 18:50:08,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:08,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792625877] [2022-12-05 18:50:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:08,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:50:09,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:09,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792625877] [2022-12-05 18:50:09,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792625877] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:09,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:09,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 18:50:09,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794084304] [2022-12-05 18:50:09,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:09,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 18:50:09,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:09,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 18:50:09,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-05 18:50:09,510 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 195 [2022-12-05 18:50:09,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 185 transitions, 382 flow. Second operand has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:09,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:09,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 195 [2022-12-05 18:50:09,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:09,636 INFO L130 PetriNetUnfolder]: 8/186 cut-off events. [2022-12-05 18:50:09,636 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-12-05 18:50:09,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 186 events. 8/186 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 197 event pairs, 0 based on Foata normal form. 11/182 useless extension candidates. Maximal degree in co-relation 173. Up to 25 conditions per place. [2022-12-05 18:50:09,640 INFO L137 encePairwiseOnDemand]: 174/195 looper letters, 28 selfloop transitions, 8 changer transitions 5/182 dead transitions. [2022-12-05 18:50:09,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 182 transitions, 448 flow [2022-12-05 18:50:09,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 18:50:09,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 18:50:09,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 826 transitions. [2022-12-05 18:50:09,655 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8471794871794872 [2022-12-05 18:50:09,657 INFO L175 Difference]: Start difference. First operand has 173 places, 185 transitions, 382 flow. Second operand 5 states and 826 transitions. [2022-12-05 18:50:09,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 182 transitions, 448 flow [2022-12-05 18:50:09,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 182 transitions, 440 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 18:50:09,665 INFO L231 Difference]: Finished difference. Result has 174 places, 171 transitions, 374 flow [2022-12-05 18:50:09,667 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=374, PETRI_PLACES=174, PETRI_TRANSITIONS=171} [2022-12-05 18:50:09,672 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 1 predicate places. [2022-12-05 18:50:09,673 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 171 transitions, 374 flow [2022-12-05 18:50:09,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:09,673 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:09,674 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:09,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 18:50:09,674 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:09,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:09,676 INFO L85 PathProgramCache]: Analyzing trace with hash -286805492, now seen corresponding path program 1 times [2022-12-05 18:50:09,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:09,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077267519] [2022-12-05 18:50:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:09,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 18:50:09,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:09,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077267519] [2022-12-05 18:50:09,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077267519] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:50:09,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143364803] [2022-12-05 18:50:09,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:09,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:50:09,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:50:09,948 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) [2022-12-05 18:50:10,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 18:50:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:10,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-05 18:50:10,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:50:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 18:50:10,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 18:50:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 18:50:10,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143364803] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 18:50:10,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 18:50:10,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-12-05 18:50:10,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768399449] [2022-12-05 18:50:10,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 18:50:10,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-05 18:50:10,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:10,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-05 18:50:10,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-12-05 18:50:10,331 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 195 [2022-12-05 18:50:10,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 171 transitions, 374 flow. Second operand has 15 states, 15 states have (on average 156.33333333333334) internal successors, (2345), 15 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:10,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:10,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 195 [2022-12-05 18:50:10,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:10,555 INFO L130 PetriNetUnfolder]: 8/199 cut-off events. [2022-12-05 18:50:10,555 INFO L131 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2022-12-05 18:50:10,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 199 events. 8/199 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 175 event pairs, 0 based on Foata normal form. 4/195 useless extension candidates. Maximal degree in co-relation 137. Up to 19 conditions per place. [2022-12-05 18:50:10,557 INFO L137 encePairwiseOnDemand]: 179/195 looper letters, 30 selfloop transitions, 22 changer transitions 0/191 dead transitions. [2022-12-05 18:50:10,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 191 transitions, 522 flow [2022-12-05 18:50:10,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 18:50:10,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 18:50:10,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1739 transitions. [2022-12-05 18:50:10,561 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8107226107226108 [2022-12-05 18:50:10,561 INFO L175 Difference]: Start difference. First operand has 174 places, 171 transitions, 374 flow. Second operand 11 states and 1739 transitions. [2022-12-05 18:50:10,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 191 transitions, 522 flow [2022-12-05 18:50:10,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 191 transitions, 510 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 18:50:10,566 INFO L231 Difference]: Finished difference. Result has 179 places, 183 transitions, 473 flow [2022-12-05 18:50:10,567 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=473, PETRI_PLACES=179, PETRI_TRANSITIONS=183} [2022-12-05 18:50:10,567 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 6 predicate places. [2022-12-05 18:50:10,567 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 183 transitions, 473 flow [2022-12-05 18:50:10,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 156.33333333333334) internal successors, (2345), 15 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:10,569 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:10,569 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:10,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-05 18:50:10,774 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 [2022-12-05 18:50:10,775 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:10,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:10,775 INFO L85 PathProgramCache]: Analyzing trace with hash -330229556, now seen corresponding path program 2 times [2022-12-05 18:50:10,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:10,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769278519] [2022-12-05 18:50:10,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:10,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:11,030 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-05 18:50:11,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:11,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769278519] [2022-12-05 18:50:11,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769278519] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:50:11,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405867056] [2022-12-05 18:50:11,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 18:50:11,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:50:11,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:50:11,048 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) [2022-12-05 18:50:11,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 18:50:11,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-05 18:50:11,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 18:50:11,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-05 18:50:11,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:50:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-05 18:50:11,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 18:50:11,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405867056] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:11,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 18:50:11,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-12-05 18:50:11,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064629235] [2022-12-05 18:50:11,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:11,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:11,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:11,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:11,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-12-05 18:50:11,255 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:11,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 183 transitions, 473 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:11,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:11,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:11,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:11,453 INFO L130 PetriNetUnfolder]: 98/588 cut-off events. [2022-12-05 18:50:11,453 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-05 18:50:11,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 824 conditions, 588 events. 98/588 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2752 event pairs, 16 based on Foata normal form. 0/534 useless extension candidates. Maximal degree in co-relation 664. Up to 70 conditions per place. [2022-12-05 18:50:11,458 INFO L137 encePairwiseOnDemand]: 187/195 looper letters, 50 selfloop transitions, 10 changer transitions 1/224 dead transitions. [2022-12-05 18:50:11,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 224 transitions, 682 flow [2022-12-05 18:50:11,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 18:50:11,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 18:50:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1367 transitions. [2022-12-05 18:50:11,461 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8762820512820513 [2022-12-05 18:50:11,461 INFO L175 Difference]: Start difference. First operand has 179 places, 183 transitions, 473 flow. Second operand 8 states and 1367 transitions. [2022-12-05 18:50:11,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 224 transitions, 682 flow [2022-12-05 18:50:11,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 224 transitions, 665 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-05 18:50:11,467 INFO L231 Difference]: Finished difference. Result has 188 places, 190 transitions, 519 flow [2022-12-05 18:50:11,467 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=519, PETRI_PLACES=188, PETRI_TRANSITIONS=190} [2022-12-05 18:50:11,468 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 15 predicate places. [2022-12-05 18:50:11,468 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 190 transitions, 519 flow [2022-12-05 18:50:11,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:11,469 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:11,469 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:11,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 18:50:11,673 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 [2022-12-05 18:50:11,674 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:11,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:11,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1369575346, now seen corresponding path program 3 times [2022-12-05 18:50:11,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:11,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361479623] [2022-12-05 18:50:11,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:11,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:11,861 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-05 18:50:11,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:11,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361479623] [2022-12-05 18:50:11,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361479623] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:50:11,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919521544] [2022-12-05 18:50:11,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 18:50:11,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:50:11,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:50:11,863 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) [2022-12-05 18:50:11,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 18:50:11,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-05 18:50:11,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 18:50:11,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-05 18:50:11,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:50:12,161 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-05 18:50:12,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 18:50:12,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919521544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:12,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 18:50:12,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-12-05 18:50:12,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491298919] [2022-12-05 18:50:12,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:12,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:12,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:12,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:12,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-12-05 18:50:12,165 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:12,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 190 transitions, 519 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:12,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:12,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:12,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:12,358 INFO L130 PetriNetUnfolder]: 131/763 cut-off events. [2022-12-05 18:50:12,358 INFO L131 PetriNetUnfolder]: For 228/253 co-relation queries the response was YES. [2022-12-05 18:50:12,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1207 conditions, 763 events. 131/763 cut-off events. For 228/253 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4279 event pairs, 32 based on Foata normal form. 5/716 useless extension candidates. Maximal degree in co-relation 1051. Up to 116 conditions per place. [2022-12-05 18:50:12,363 INFO L137 encePairwiseOnDemand]: 189/195 looper letters, 50 selfloop transitions, 7 changer transitions 2/222 dead transitions. [2022-12-05 18:50:12,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 222 transitions, 756 flow [2022-12-05 18:50:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 18:50:12,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 18:50:12,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1026 transitions. [2022-12-05 18:50:12,368 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8769230769230769 [2022-12-05 18:50:12,368 INFO L175 Difference]: Start difference. First operand has 188 places, 190 transitions, 519 flow. Second operand 6 states and 1026 transitions. [2022-12-05 18:50:12,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 222 transitions, 756 flow [2022-12-05 18:50:12,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 222 transitions, 756 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 18:50:12,373 INFO L231 Difference]: Finished difference. Result has 196 places, 193 transitions, 567 flow [2022-12-05 18:50:12,373 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=567, PETRI_PLACES=196, PETRI_TRANSITIONS=193} [2022-12-05 18:50:12,374 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 23 predicate places. [2022-12-05 18:50:12,374 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 193 transitions, 567 flow [2022-12-05 18:50:12,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:12,374 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:12,375 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:12,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 18:50:12,579 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 [2022-12-05 18:50:12,579 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:12,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:12,580 INFO L85 PathProgramCache]: Analyzing trace with hash 228940796, now seen corresponding path program 4 times [2022-12-05 18:50:12,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:12,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240600565] [2022-12-05 18:50:12,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:12,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:12,767 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-05 18:50:12,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:12,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240600565] [2022-12-05 18:50:12,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240600565] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:50:12,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894024935] [2022-12-05 18:50:12,767 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-05 18:50:12,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:50:12,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:50:12,769 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) [2022-12-05 18:50:12,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 18:50:12,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-05 18:50:12,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 18:50:12,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-05 18:50:12,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:50:12,985 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-05 18:50:12,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 18:50:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-05 18:50:13,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894024935] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 18:50:13,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 18:50:13,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-12-05 18:50:13,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663941595] [2022-12-05 18:50:13,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 18:50:13,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-05 18:50:13,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:13,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-05 18:50:13,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-12-05 18:50:13,073 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 195 [2022-12-05 18:50:13,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 193 transitions, 567 flow. Second operand has 22 states, 22 states have (on average 156.1818181818182) internal successors, (3436), 22 states have internal predecessors, (3436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:13,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:13,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 195 [2022-12-05 18:50:13,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:13,357 INFO L130 PetriNetUnfolder]: 37/506 cut-off events. [2022-12-05 18:50:13,357 INFO L131 PetriNetUnfolder]: For 135/143 co-relation queries the response was YES. [2022-12-05 18:50:13,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 506 events. 37/506 cut-off events. For 135/143 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2019 event pairs, 0 based on Foata normal form. 4/481 useless extension candidates. Maximal degree in co-relation 620. Up to 25 conditions per place. [2022-12-05 18:50:13,360 INFO L137 encePairwiseOnDemand]: 179/195 looper letters, 38 selfloop transitions, 34 changer transitions 0/221 dead transitions. [2022-12-05 18:50:13,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 221 transitions, 823 flow [2022-12-05 18:50:13,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-05 18:50:13,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-05 18:50:13,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2677 transitions. [2022-12-05 18:50:13,364 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8075414781297134 [2022-12-05 18:50:13,364 INFO L175 Difference]: Start difference. First operand has 196 places, 193 transitions, 567 flow. Second operand 17 states and 2677 transitions. [2022-12-05 18:50:13,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 221 transitions, 823 flow [2022-12-05 18:50:13,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 221 transitions, 815 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-05 18:50:13,369 INFO L231 Difference]: Finished difference. Result has 212 places, 207 transitions, 734 flow [2022-12-05 18:50:13,369 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=734, PETRI_PLACES=212, PETRI_TRANSITIONS=207} [2022-12-05 18:50:13,371 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 39 predicate places. [2022-12-05 18:50:13,371 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 207 transitions, 734 flow [2022-12-05 18:50:13,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 156.1818181818182) internal successors, (3436), 22 states have internal predecessors, (3436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:13,373 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:13,373 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:13,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-05 18:50:13,576 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 [2022-12-05 18:50:13,577 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:13,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:13,577 INFO L85 PathProgramCache]: Analyzing trace with hash -455881150, now seen corresponding path program 5 times [2022-12-05 18:50:13,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:13,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619139049] [2022-12-05 18:50:13,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:13,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:13,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:13,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619139049] [2022-12-05 18:50:13,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619139049] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:13,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:13,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:50:13,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442074344] [2022-12-05 18:50:13,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:13,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:13,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:13,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:13,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:50:13,766 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:13,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 207 transitions, 734 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:13,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:13,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:13,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:13,933 INFO L130 PetriNetUnfolder]: 173/978 cut-off events. [2022-12-05 18:50:13,934 INFO L131 PetriNetUnfolder]: For 430/455 co-relation queries the response was YES. [2022-12-05 18:50:13,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 978 events. 173/978 cut-off events. For 430/455 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5643 event pairs, 29 based on Foata normal form. 14/925 useless extension candidates. Maximal degree in co-relation 1390. Up to 145 conditions per place. [2022-12-05 18:50:13,939 INFO L137 encePairwiseOnDemand]: 186/195 looper letters, 41 selfloop transitions, 17 changer transitions 0/235 dead transitions. [2022-12-05 18:50:13,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 235 transitions, 972 flow [2022-12-05 18:50:13,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 18:50:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 18:50:13,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1026 transitions. [2022-12-05 18:50:13,941 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8769230769230769 [2022-12-05 18:50:13,941 INFO L175 Difference]: Start difference. First operand has 212 places, 207 transitions, 734 flow. Second operand 6 states and 1026 transitions. [2022-12-05 18:50:13,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 235 transitions, 972 flow [2022-12-05 18:50:13,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 235 transitions, 927 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-12-05 18:50:13,945 INFO L231 Difference]: Finished difference. Result has 213 places, 214 transitions, 806 flow [2022-12-05 18:50:13,945 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=806, PETRI_PLACES=213, PETRI_TRANSITIONS=214} [2022-12-05 18:50:13,946 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 40 predicate places. [2022-12-05 18:50:13,946 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 214 transitions, 806 flow [2022-12-05 18:50:13,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:13,946 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:13,947 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:13,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 18:50:13,947 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:13,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:13,947 INFO L85 PathProgramCache]: Analyzing trace with hash -111676084, now seen corresponding path program 6 times [2022-12-05 18:50:13,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:13,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850315824] [2022-12-05 18:50:13,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:13,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:14,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:14,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850315824] [2022-12-05 18:50:14,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850315824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:14,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:14,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:50:14,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779034239] [2022-12-05 18:50:14,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:14,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:14,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:14,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:14,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:50:14,080 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:14,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 214 transitions, 806 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:14,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:14,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:14,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:14,271 INFO L130 PetriNetUnfolder]: 214/1158 cut-off events. [2022-12-05 18:50:14,271 INFO L131 PetriNetUnfolder]: For 873/930 co-relation queries the response was YES. [2022-12-05 18:50:14,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2086 conditions, 1158 events. 214/1158 cut-off events. For 873/930 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7379 event pairs, 32 based on Foata normal form. 21/1103 useless extension candidates. Maximal degree in co-relation 1837. Up to 251 conditions per place. [2022-12-05 18:50:14,277 INFO L137 encePairwiseOnDemand]: 187/195 looper letters, 53 selfloop transitions, 15 changer transitions 1/246 dead transitions. [2022-12-05 18:50:14,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 246 transitions, 1107 flow [2022-12-05 18:50:14,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 18:50:14,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 18:50:14,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1028 transitions. [2022-12-05 18:50:14,279 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8786324786324786 [2022-12-05 18:50:14,279 INFO L175 Difference]: Start difference. First operand has 213 places, 214 transitions, 806 flow. Second operand 6 states and 1028 transitions. [2022-12-05 18:50:14,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 246 transitions, 1107 flow [2022-12-05 18:50:14,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 246 transitions, 1093 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-05 18:50:14,284 INFO L231 Difference]: Finished difference. Result has 221 places, 220 transitions, 912 flow [2022-12-05 18:50:14,285 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=912, PETRI_PLACES=221, PETRI_TRANSITIONS=220} [2022-12-05 18:50:14,285 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 48 predicate places. [2022-12-05 18:50:14,285 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 220 transitions, 912 flow [2022-12-05 18:50:14,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:14,286 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:14,286 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:14,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 18:50:14,286 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:14,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:14,287 INFO L85 PathProgramCache]: Analyzing trace with hash 985508994, now seen corresponding path program 7 times [2022-12-05 18:50:14,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:14,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875913261] [2022-12-05 18:50:14,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:14,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:14,432 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:14,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:14,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875913261] [2022-12-05 18:50:14,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875913261] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:14,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:14,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:50:14,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301975080] [2022-12-05 18:50:14,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:14,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:14,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:14,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:14,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:50:14,434 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:14,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 220 transitions, 912 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:14,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:14,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:14,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:14,647 INFO L130 PetriNetUnfolder]: 213/1157 cut-off events. [2022-12-05 18:50:14,647 INFO L131 PetriNetUnfolder]: For 1307/1382 co-relation queries the response was YES. [2022-12-05 18:50:14,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2244 conditions, 1157 events. 213/1157 cut-off events. For 1307/1382 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7305 event pairs, 36 based on Foata normal form. 16/1095 useless extension candidates. Maximal degree in co-relation 1991. Up to 229 conditions per place. [2022-12-05 18:50:14,654 INFO L137 encePairwiseOnDemand]: 187/195 looper letters, 55 selfloop transitions, 17 changer transitions 1/250 dead transitions. [2022-12-05 18:50:14,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 250 transitions, 1213 flow [2022-12-05 18:50:14,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 18:50:14,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 18:50:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1031 transitions. [2022-12-05 18:50:14,656 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8811965811965812 [2022-12-05 18:50:14,656 INFO L175 Difference]: Start difference. First operand has 221 places, 220 transitions, 912 flow. Second operand 6 states and 1031 transitions. [2022-12-05 18:50:14,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 250 transitions, 1213 flow [2022-12-05 18:50:14,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 250 transitions, 1198 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-05 18:50:14,662 INFO L231 Difference]: Finished difference. Result has 228 places, 226 transitions, 1029 flow [2022-12-05 18:50:14,663 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1029, PETRI_PLACES=228, PETRI_TRANSITIONS=226} [2022-12-05 18:50:14,664 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 55 predicate places. [2022-12-05 18:50:14,664 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 226 transitions, 1029 flow [2022-12-05 18:50:14,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:14,665 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:14,665 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:14,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 18:50:14,666 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:14,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:14,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2000035898, now seen corresponding path program 8 times [2022-12-05 18:50:14,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:14,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992069015] [2022-12-05 18:50:14,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:14,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:14,824 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:14,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:14,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992069015] [2022-12-05 18:50:14,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992069015] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:14,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:14,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:50:14,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626410955] [2022-12-05 18:50:14,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:14,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:14,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:14,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:14,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:50:14,826 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:14,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 226 transitions, 1029 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:14,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:14,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:14,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:15,022 INFO L130 PetriNetUnfolder]: 208/1106 cut-off events. [2022-12-05 18:50:15,023 INFO L131 PetriNetUnfolder]: For 1613/1690 co-relation queries the response was YES. [2022-12-05 18:50:15,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 1106 events. 208/1106 cut-off events. For 1613/1690 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6806 event pairs, 21 based on Foata normal form. 29/1064 useless extension candidates. Maximal degree in co-relation 2016. Up to 250 conditions per place. [2022-12-05 18:50:15,029 INFO L137 encePairwiseOnDemand]: 187/195 looper letters, 50 selfloop transitions, 20 changer transitions 1/248 dead transitions. [2022-12-05 18:50:15,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 248 transitions, 1262 flow [2022-12-05 18:50:15,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 18:50:15,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 18:50:15,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1029 transitions. [2022-12-05 18:50:15,031 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8794871794871795 [2022-12-05 18:50:15,031 INFO L175 Difference]: Start difference. First operand has 228 places, 226 transitions, 1029 flow. Second operand 6 states and 1029 transitions. [2022-12-05 18:50:15,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 248 transitions, 1262 flow [2022-12-05 18:50:15,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 248 transitions, 1237 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-05 18:50:15,039 INFO L231 Difference]: Finished difference. Result has 231 places, 227 transitions, 1070 flow [2022-12-05 18:50:15,039 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1070, PETRI_PLACES=231, PETRI_TRANSITIONS=227} [2022-12-05 18:50:15,040 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 58 predicate places. [2022-12-05 18:50:15,040 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 227 transitions, 1070 flow [2022-12-05 18:50:15,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:15,041 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:15,041 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:15,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 18:50:15,041 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:15,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:15,041 INFO L85 PathProgramCache]: Analyzing trace with hash 339843136, now seen corresponding path program 9 times [2022-12-05 18:50:15,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:15,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502713453] [2022-12-05 18:50:15,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:15,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:15,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:15,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502713453] [2022-12-05 18:50:15,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502713453] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:15,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:15,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:50:15,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574397271] [2022-12-05 18:50:15,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:15,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:15,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:15,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:15,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:50:15,210 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:15,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 227 transitions, 1070 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:15,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:15,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:15,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:15,399 INFO L130 PetriNetUnfolder]: 211/1127 cut-off events. [2022-12-05 18:50:15,399 INFO L131 PetriNetUnfolder]: For 1876/1947 co-relation queries the response was YES. [2022-12-05 18:50:15,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2327 conditions, 1127 events. 211/1127 cut-off events. For 1876/1947 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6954 event pairs, 35 based on Foata normal form. 23/1072 useless extension candidates. Maximal degree in co-relation 2071. Up to 229 conditions per place. [2022-12-05 18:50:15,405 INFO L137 encePairwiseOnDemand]: 188/195 looper letters, 46 selfloop transitions, 17 changer transitions 1/241 dead transitions. [2022-12-05 18:50:15,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 241 transitions, 1255 flow [2022-12-05 18:50:15,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 18:50:15,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 18:50:15,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1023 transitions. [2022-12-05 18:50:15,408 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8743589743589744 [2022-12-05 18:50:15,408 INFO L175 Difference]: Start difference. First operand has 231 places, 227 transitions, 1070 flow. Second operand 6 states and 1023 transitions. [2022-12-05 18:50:15,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 241 transitions, 1255 flow [2022-12-05 18:50:15,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 241 transitions, 1201 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-12-05 18:50:15,415 INFO L231 Difference]: Finished difference. Result has 230 places, 227 transitions, 1059 flow [2022-12-05 18:50:15,415 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1059, PETRI_PLACES=230, PETRI_TRANSITIONS=227} [2022-12-05 18:50:15,415 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 57 predicate places. [2022-12-05 18:50:15,416 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 227 transitions, 1059 flow [2022-12-05 18:50:15,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:15,416 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:15,416 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:15,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 18:50:15,416 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:15,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:15,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1004364388, now seen corresponding path program 10 times [2022-12-05 18:50:15,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:15,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524048104] [2022-12-05 18:50:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:15,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:15,549 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:15,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:15,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524048104] [2022-12-05 18:50:15,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524048104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:15,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:15,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:50:15,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708908525] [2022-12-05 18:50:15,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:15,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:15,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:15,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:15,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:50:15,551 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:15,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 227 transitions, 1059 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:15,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:15,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:15,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:15,850 INFO L130 PetriNetUnfolder]: 464/2628 cut-off events. [2022-12-05 18:50:15,850 INFO L131 PetriNetUnfolder]: For 2135/2152 co-relation queries the response was YES. [2022-12-05 18:50:15,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4358 conditions, 2628 events. 464/2628 cut-off events. For 2135/2152 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 23320 event pairs, 151 based on Foata normal form. 4/2334 useless extension candidates. Maximal degree in co-relation 4102. Up to 486 conditions per place. [2022-12-05 18:50:15,863 INFO L137 encePairwiseOnDemand]: 188/195 looper letters, 39 selfloop transitions, 8 changer transitions 0/254 dead transitions. [2022-12-05 18:50:15,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 254 transitions, 1213 flow [2022-12-05 18:50:15,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 18:50:15,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 18:50:15,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1026 transitions. [2022-12-05 18:50:15,865 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8769230769230769 [2022-12-05 18:50:15,866 INFO L175 Difference]: Start difference. First operand has 230 places, 227 transitions, 1059 flow. Second operand 6 states and 1026 transitions. [2022-12-05 18:50:15,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 254 transitions, 1213 flow [2022-12-05 18:50:15,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 254 transitions, 1190 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-05 18:50:15,873 INFO L231 Difference]: Finished difference. Result has 235 places, 236 transitions, 1102 flow [2022-12-05 18:50:15,874 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1102, PETRI_PLACES=235, PETRI_TRANSITIONS=236} [2022-12-05 18:50:15,874 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 62 predicate places. [2022-12-05 18:50:15,874 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 236 transitions, 1102 flow [2022-12-05 18:50:15,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:15,875 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:15,875 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:15,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-05 18:50:15,875 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:15,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:15,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1045858636, now seen corresponding path program 11 times [2022-12-05 18:50:15,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:15,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059421796] [2022-12-05 18:50:15,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:15,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:16,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:16,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059421796] [2022-12-05 18:50:16,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059421796] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:16,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:16,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:50:16,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478619816] [2022-12-05 18:50:16,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:16,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:16,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:16,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:16,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:50:16,004 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:16,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 236 transitions, 1102 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:16,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:16,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:16,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:16,613 INFO L130 PetriNetUnfolder]: 763/4605 cut-off events. [2022-12-05 18:50:16,613 INFO L131 PetriNetUnfolder]: For 4048/4095 co-relation queries the response was YES. [2022-12-05 18:50:16,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7881 conditions, 4605 events. 763/4605 cut-off events. For 4048/4095 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 46220 event pairs, 255 based on Foata normal form. 29/4264 useless extension candidates. Maximal degree in co-relation 7622. Up to 464 conditions per place. [2022-12-05 18:50:16,641 INFO L137 encePairwiseOnDemand]: 187/195 looper letters, 49 selfloop transitions, 16 changer transitions 2/274 dead transitions. [2022-12-05 18:50:16,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 274 transitions, 1373 flow [2022-12-05 18:50:16,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 18:50:16,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 18:50:16,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1200 transitions. [2022-12-05 18:50:16,645 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8791208791208791 [2022-12-05 18:50:16,645 INFO L175 Difference]: Start difference. First operand has 235 places, 236 transitions, 1102 flow. Second operand 7 states and 1200 transitions. [2022-12-05 18:50:16,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 274 transitions, 1373 flow [2022-12-05 18:50:16,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 274 transitions, 1373 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 18:50:16,657 INFO L231 Difference]: Finished difference. Result has 245 places, 245 transitions, 1220 flow [2022-12-05 18:50:16,657 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1220, PETRI_PLACES=245, PETRI_TRANSITIONS=245} [2022-12-05 18:50:16,658 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 72 predicate places. [2022-12-05 18:50:16,658 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 245 transitions, 1220 flow [2022-12-05 18:50:16,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:16,659 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:16,659 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:16,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-05 18:50:16,659 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:16,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:16,660 INFO L85 PathProgramCache]: Analyzing trace with hash 519427272, now seen corresponding path program 12 times [2022-12-05 18:50:16,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:16,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527615225] [2022-12-05 18:50:16,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:16,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:16,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:16,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527615225] [2022-12-05 18:50:16,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527615225] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:16,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:16,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:50:16,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858991281] [2022-12-05 18:50:16,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:16,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:16,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:16,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:16,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:50:16,780 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:16,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 245 transitions, 1220 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:16,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:16,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:16,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:17,524 INFO L130 PetriNetUnfolder]: 871/4831 cut-off events. [2022-12-05 18:50:17,524 INFO L131 PetriNetUnfolder]: For 4499/4600 co-relation queries the response was YES. [2022-12-05 18:50:17,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8780 conditions, 4831 events. 871/4831 cut-off events. For 4499/4600 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 49749 event pairs, 212 based on Foata normal form. 49/4540 useless extension candidates. Maximal degree in co-relation 8516. Up to 868 conditions per place. [2022-12-05 18:50:17,555 INFO L137 encePairwiseOnDemand]: 186/195 looper letters, 59 selfloop transitions, 20 changer transitions 2/288 dead transitions. [2022-12-05 18:50:17,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 288 transitions, 1565 flow [2022-12-05 18:50:17,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 18:50:17,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 18:50:17,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1039 transitions. [2022-12-05 18:50:17,557 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.888034188034188 [2022-12-05 18:50:17,557 INFO L175 Difference]: Start difference. First operand has 245 places, 245 transitions, 1220 flow. Second operand 6 states and 1039 transitions. [2022-12-05 18:50:17,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 288 transitions, 1565 flow [2022-12-05 18:50:17,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 288 transitions, 1556 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 18:50:17,578 INFO L231 Difference]: Finished difference. Result has 254 places, 255 transitions, 1373 flow [2022-12-05 18:50:17,578 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1373, PETRI_PLACES=254, PETRI_TRANSITIONS=255} [2022-12-05 18:50:17,578 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 81 predicate places. [2022-12-05 18:50:17,578 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 255 transitions, 1373 flow [2022-12-05 18:50:17,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:17,579 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:17,579 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:17,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-05 18:50:17,579 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:17,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:17,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1900758344, now seen corresponding path program 13 times [2022-12-05 18:50:17,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:17,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977525594] [2022-12-05 18:50:17,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:17,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:17,704 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:17,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:17,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977525594] [2022-12-05 18:50:17,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977525594] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:17,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:17,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:50:17,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199976352] [2022-12-05 18:50:17,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:17,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:17,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:17,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:17,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:50:17,706 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:17,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 255 transitions, 1373 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:17,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:17,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:17,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:18,404 INFO L130 PetriNetUnfolder]: 890/4891 cut-off events. [2022-12-05 18:50:18,404 INFO L131 PetriNetUnfolder]: For 5773/5943 co-relation queries the response was YES. [2022-12-05 18:50:18,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9598 conditions, 4891 events. 890/4891 cut-off events. For 5773/5943 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 51153 event pairs, 310 based on Foata normal form. 57/4599 useless extension candidates. Maximal degree in co-relation 9330. Up to 1065 conditions per place. [2022-12-05 18:50:18,441 INFO L137 encePairwiseOnDemand]: 186/195 looper letters, 59 selfloop transitions, 19 changer transitions 3/288 dead transitions. [2022-12-05 18:50:18,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 288 transitions, 1694 flow [2022-12-05 18:50:18,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 18:50:18,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 18:50:18,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1037 transitions. [2022-12-05 18:50:18,445 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8863247863247863 [2022-12-05 18:50:18,445 INFO L175 Difference]: Start difference. First operand has 254 places, 255 transitions, 1373 flow. Second operand 6 states and 1037 transitions. [2022-12-05 18:50:18,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 288 transitions, 1694 flow [2022-12-05 18:50:18,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 288 transitions, 1686 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-05 18:50:18,467 INFO L231 Difference]: Finished difference. Result has 263 places, 258 transitions, 1479 flow [2022-12-05 18:50:18,467 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1479, PETRI_PLACES=263, PETRI_TRANSITIONS=258} [2022-12-05 18:50:18,468 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 90 predicate places. [2022-12-05 18:50:18,468 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 258 transitions, 1479 flow [2022-12-05 18:50:18,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:18,468 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:18,468 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:18,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-05 18:50:18,469 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:18,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:18,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1883902115, now seen corresponding path program 1 times [2022-12-05 18:50:18,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:18,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061908715] [2022-12-05 18:50:18,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:18,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:18,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:18,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061908715] [2022-12-05 18:50:18,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061908715] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:18,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:18,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:50:18,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770028877] [2022-12-05 18:50:18,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:18,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:18,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:18,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:18,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:50:18,612 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:18,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 258 transitions, 1479 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:18,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:18,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:18,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:19,338 INFO L130 PetriNetUnfolder]: 891/5006 cut-off events. [2022-12-05 18:50:19,338 INFO L131 PetriNetUnfolder]: For 6670/6822 co-relation queries the response was YES. [2022-12-05 18:50:19,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9839 conditions, 5006 events. 891/5006 cut-off events. For 6670/6822 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 52634 event pairs, 150 based on Foata normal form. 37/4689 useless extension candidates. Maximal degree in co-relation 9566. Up to 509 conditions per place. [2022-12-05 18:50:19,385 INFO L137 encePairwiseOnDemand]: 186/195 looper letters, 79 selfloop transitions, 17 changer transitions 13/316 dead transitions. [2022-12-05 18:50:19,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 316 transitions, 2060 flow [2022-12-05 18:50:19,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 18:50:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 18:50:19,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1700 transitions. [2022-12-05 18:50:19,484 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8717948717948718 [2022-12-05 18:50:19,484 INFO L175 Difference]: Start difference. First operand has 263 places, 258 transitions, 1479 flow. Second operand 10 states and 1700 transitions. [2022-12-05 18:50:19,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 316 transitions, 2060 flow [2022-12-05 18:50:19,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 316 transitions, 2037 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-12-05 18:50:19,504 INFO L231 Difference]: Finished difference. Result has 275 places, 264 transitions, 1589 flow [2022-12-05 18:50:19,505 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1589, PETRI_PLACES=275, PETRI_TRANSITIONS=264} [2022-12-05 18:50:19,505 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 102 predicate places. [2022-12-05 18:50:19,505 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 264 transitions, 1589 flow [2022-12-05 18:50:19,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:19,506 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:19,506 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:19,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-05 18:50:19,506 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:19,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:19,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1678772859, now seen corresponding path program 2 times [2022-12-05 18:50:19,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:19,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814093825] [2022-12-05 18:50:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:19,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:19,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:19,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814093825] [2022-12-05 18:50:19,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814093825] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:19,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:19,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:50:19,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859119643] [2022-12-05 18:50:19,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:19,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:19,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:19,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:19,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:50:19,695 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:19,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 264 transitions, 1589 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:19,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:19,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:19,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:20,474 INFO L130 PetriNetUnfolder]: 861/4927 cut-off events. [2022-12-05 18:50:20,474 INFO L131 PetriNetUnfolder]: For 7489/7646 co-relation queries the response was YES. [2022-12-05 18:50:20,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9976 conditions, 4927 events. 861/4927 cut-off events. For 7489/7646 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 51564 event pairs, 107 based on Foata normal form. 62/4661 useless extension candidates. Maximal degree in co-relation 9697. Up to 510 conditions per place. [2022-12-05 18:50:20,515 INFO L137 encePairwiseOnDemand]: 185/195 looper letters, 74 selfloop transitions, 32 changer transitions 4/317 dead transitions. [2022-12-05 18:50:20,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 317 transitions, 2071 flow [2022-12-05 18:50:20,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 18:50:20,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 18:50:20,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1386 transitions. [2022-12-05 18:50:20,517 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8884615384615384 [2022-12-05 18:50:20,517 INFO L175 Difference]: Start difference. First operand has 275 places, 264 transitions, 1589 flow. Second operand 8 states and 1386 transitions. [2022-12-05 18:50:20,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 317 transitions, 2071 flow [2022-12-05 18:50:20,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 317 transitions, 2059 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-05 18:50:20,541 INFO L231 Difference]: Finished difference. Result has 280 places, 272 transitions, 1790 flow [2022-12-05 18:50:20,541 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1790, PETRI_PLACES=280, PETRI_TRANSITIONS=272} [2022-12-05 18:50:20,542 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 107 predicate places. [2022-12-05 18:50:20,542 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 272 transitions, 1790 flow [2022-12-05 18:50:20,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:20,542 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:20,543 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:20,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-05 18:50:20,543 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:20,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:20,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2008004325, now seen corresponding path program 3 times [2022-12-05 18:50:20,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:20,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517810594] [2022-12-05 18:50:20,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:20,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:20,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:20,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517810594] [2022-12-05 18:50:20,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517810594] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:20,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:20,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:50:20,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106999551] [2022-12-05 18:50:20,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:20,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:20,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:20,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:20,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:50:20,686 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:20,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 272 transitions, 1790 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:20,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:20,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:20,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:21,409 INFO L130 PetriNetUnfolder]: 838/4632 cut-off events. [2022-12-05 18:50:21,409 INFO L131 PetriNetUnfolder]: For 8755/8926 co-relation queries the response was YES. [2022-12-05 18:50:21,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10042 conditions, 4632 events. 838/4632 cut-off events. For 8755/8926 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 47203 event pairs, 142 based on Foata normal form. 58/4372 useless extension candidates. Maximal degree in co-relation 9761. Up to 510 conditions per place. [2022-12-05 18:50:21,448 INFO L137 encePairwiseOnDemand]: 186/195 looper letters, 71 selfloop transitions, 28 changer transitions 8/314 dead transitions. [2022-12-05 18:50:21,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 314 transitions, 2177 flow [2022-12-05 18:50:21,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 18:50:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 18:50:21,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1542 transitions. [2022-12-05 18:50:21,450 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8786324786324786 [2022-12-05 18:50:21,450 INFO L175 Difference]: Start difference. First operand has 280 places, 272 transitions, 1790 flow. Second operand 9 states and 1542 transitions. [2022-12-05 18:50:21,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 314 transitions, 2177 flow [2022-12-05 18:50:21,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 314 transitions, 2148 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-05 18:50:21,479 INFO L231 Difference]: Finished difference. Result has 287 places, 272 transitions, 1840 flow [2022-12-05 18:50:21,480 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1840, PETRI_PLACES=287, PETRI_TRANSITIONS=272} [2022-12-05 18:50:21,480 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 114 predicate places. [2022-12-05 18:50:21,480 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 272 transitions, 1840 flow [2022-12-05 18:50:21,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:21,480 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:21,480 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:21,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-05 18:50:21,481 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:21,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:21,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1304538305, now seen corresponding path program 1 times [2022-12-05 18:50:21,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:21,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181332967] [2022-12-05 18:50:21,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:21,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:21,585 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:21,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:21,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181332967] [2022-12-05 18:50:21,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181332967] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:21,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:21,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:50:21,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723736121] [2022-12-05 18:50:21,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:21,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:21,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:21,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:21,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:50:21,587 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:21,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 272 transitions, 1840 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:21,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:21,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:21,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:22,302 INFO L130 PetriNetUnfolder]: 793/4139 cut-off events. [2022-12-05 18:50:22,302 INFO L131 PetriNetUnfolder]: For 8084/8224 co-relation queries the response was YES. [2022-12-05 18:50:22,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8865 conditions, 4139 events. 793/4139 cut-off events. For 8084/8224 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 41483 event pairs, 171 based on Foata normal form. 25/3816 useless extension candidates. Maximal degree in co-relation 8582. Up to 637 conditions per place. [2022-12-05 18:50:22,342 INFO L137 encePairwiseOnDemand]: 187/195 looper letters, 60 selfloop transitions, 12 changer transitions 3/295 dead transitions. [2022-12-05 18:50:22,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 295 transitions, 2130 flow [2022-12-05 18:50:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 18:50:22,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 18:50:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1020 transitions. [2022-12-05 18:50:22,344 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8717948717948718 [2022-12-05 18:50:22,344 INFO L175 Difference]: Start difference. First operand has 287 places, 272 transitions, 1840 flow. Second operand 6 states and 1020 transitions. [2022-12-05 18:50:22,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 295 transitions, 2130 flow [2022-12-05 18:50:22,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 295 transitions, 2062 flow, removed 6 selfloop flow, removed 8 redundant places. [2022-12-05 18:50:22,369 INFO L231 Difference]: Finished difference. Result has 286 places, 273 transitions, 1823 flow [2022-12-05 18:50:22,370 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1823, PETRI_PLACES=286, PETRI_TRANSITIONS=273} [2022-12-05 18:50:22,371 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 113 predicate places. [2022-12-05 18:50:22,371 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 273 transitions, 1823 flow [2022-12-05 18:50:22,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:22,372 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:22,372 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:22,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-05 18:50:22,372 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:22,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:22,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2133641537, now seen corresponding path program 2 times [2022-12-05 18:50:22,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:22,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091089760] [2022-12-05 18:50:22,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:22,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:22,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:22,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091089760] [2022-12-05 18:50:22,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091089760] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:22,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:22,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:50:22,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384030729] [2022-12-05 18:50:22,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:22,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:22,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:22,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:22,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:50:22,514 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:22,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 273 transitions, 1823 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:22,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:22,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:22,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:23,180 INFO L130 PetriNetUnfolder]: 785/4081 cut-off events. [2022-12-05 18:50:23,181 INFO L131 PetriNetUnfolder]: For 7958/8108 co-relation queries the response was YES. [2022-12-05 18:50:23,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8835 conditions, 4081 events. 785/4081 cut-off events. For 7958/8108 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 40816 event pairs, 126 based on Foata normal form. 54/3805 useless extension candidates. Maximal degree in co-relation 8549. Up to 579 conditions per place. [2022-12-05 18:50:23,216 INFO L137 encePairwiseOnDemand]: 185/195 looper letters, 49 selfloop transitions, 26 changer transitions 2/297 dead transitions. [2022-12-05 18:50:23,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 297 transitions, 2091 flow [2022-12-05 18:50:23,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 18:50:23,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 18:50:23,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1029 transitions. [2022-12-05 18:50:23,218 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8794871794871795 [2022-12-05 18:50:23,218 INFO L175 Difference]: Start difference. First operand has 286 places, 273 transitions, 1823 flow. Second operand 6 states and 1029 transitions. [2022-12-05 18:50:23,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 297 transitions, 2091 flow [2022-12-05 18:50:23,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 297 transitions, 2070 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-05 18:50:23,244 INFO L231 Difference]: Finished difference. Result has 288 places, 276 transitions, 1918 flow [2022-12-05 18:50:23,244 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1805, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1918, PETRI_PLACES=288, PETRI_TRANSITIONS=276} [2022-12-05 18:50:23,245 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 115 predicate places. [2022-12-05 18:50:23,245 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 276 transitions, 1918 flow [2022-12-05 18:50:23,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:23,245 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:23,246 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:23,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-05 18:50:23,246 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:23,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:23,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1875176839, now seen corresponding path program 3 times [2022-12-05 18:50:23,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:23,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359703432] [2022-12-05 18:50:23,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:23,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:23,354 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:23,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:23,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359703432] [2022-12-05 18:50:23,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359703432] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:23,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:23,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:50:23,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936382956] [2022-12-05 18:50:23,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:23,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:23,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:23,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:23,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:50:23,355 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:23,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 276 transitions, 1918 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:23,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:23,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:23,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:23,911 INFO L130 PetriNetUnfolder]: 780/3963 cut-off events. [2022-12-05 18:50:23,912 INFO L131 PetriNetUnfolder]: For 9156/9308 co-relation queries the response was YES. [2022-12-05 18:50:23,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8892 conditions, 3963 events. 780/3963 cut-off events. For 9156/9308 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 38973 event pairs, 147 based on Foata normal form. 42/3675 useless extension candidates. Maximal degree in co-relation 8605. Up to 597 conditions per place. [2022-12-05 18:50:23,948 INFO L137 encePairwiseOnDemand]: 188/195 looper letters, 51 selfloop transitions, 18 changer transitions 4/293 dead transitions. [2022-12-05 18:50:23,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 293 transitions, 2153 flow [2022-12-05 18:50:23,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 18:50:23,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 18:50:23,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1021 transitions. [2022-12-05 18:50:23,950 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8726495726495727 [2022-12-05 18:50:23,950 INFO L175 Difference]: Start difference. First operand has 288 places, 276 transitions, 1918 flow. Second operand 6 states and 1021 transitions. [2022-12-05 18:50:23,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 293 transitions, 2153 flow [2022-12-05 18:50:23,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 293 transitions, 2123 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-05 18:50:23,978 INFO L231 Difference]: Finished difference. Result has 291 places, 275 transitions, 1917 flow [2022-12-05 18:50:23,978 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1888, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1917, PETRI_PLACES=291, PETRI_TRANSITIONS=275} [2022-12-05 18:50:23,978 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 118 predicate places. [2022-12-05 18:50:23,979 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 275 transitions, 1917 flow [2022-12-05 18:50:23,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:23,979 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:23,979 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:23,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-05 18:50:23,979 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:23,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:23,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1722830021, now seen corresponding path program 4 times [2022-12-05 18:50:23,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:23,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114827215] [2022-12-05 18:50:23,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:23,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:24,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:24,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114827215] [2022-12-05 18:50:24,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114827215] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:24,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:24,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:50:24,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203205664] [2022-12-05 18:50:24,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:24,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:24,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:24,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:24,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:50:24,092 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:24,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 275 transitions, 1917 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:24,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:24,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:24,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:24,758 INFO L130 PetriNetUnfolder]: 808/4472 cut-off events. [2022-12-05 18:50:24,758 INFO L131 PetriNetUnfolder]: For 10281/10460 co-relation queries the response was YES. [2022-12-05 18:50:24,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10007 conditions, 4472 events. 808/4472 cut-off events. For 10281/10460 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 45185 event pairs, 200 based on Foata normal form. 50/4219 useless extension candidates. Maximal degree in co-relation 9720. Up to 830 conditions per place. [2022-12-05 18:50:24,799 INFO L137 encePairwiseOnDemand]: 185/195 looper letters, 78 selfloop transitions, 28 changer transitions 5/321 dead transitions. [2022-12-05 18:50:24,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 321 transitions, 2349 flow [2022-12-05 18:50:24,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 18:50:24,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 18:50:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1219 transitions. [2022-12-05 18:50:24,801 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8930402930402931 [2022-12-05 18:50:24,801 INFO L175 Difference]: Start difference. First operand has 291 places, 275 transitions, 1917 flow. Second operand 7 states and 1219 transitions. [2022-12-05 18:50:24,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 321 transitions, 2349 flow [2022-12-05 18:50:24,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 321 transitions, 2293 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-12-05 18:50:24,836 INFO L231 Difference]: Finished difference. Result has 291 places, 278 transitions, 1984 flow [2022-12-05 18:50:24,836 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1861, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1984, PETRI_PLACES=291, PETRI_TRANSITIONS=278} [2022-12-05 18:50:24,836 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 118 predicate places. [2022-12-05 18:50:24,836 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 278 transitions, 1984 flow [2022-12-05 18:50:24,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:24,837 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:24,837 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:24,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-05 18:50:24,837 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:24,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:24,838 INFO L85 PathProgramCache]: Analyzing trace with hash 649889957, now seen corresponding path program 5 times [2022-12-05 18:50:24,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:24,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935050489] [2022-12-05 18:50:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:24,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:24,940 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:24,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:24,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935050489] [2022-12-05 18:50:24,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935050489] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:24,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:24,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:50:24,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945186587] [2022-12-05 18:50:24,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:24,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:24,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:24,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:24,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:50:24,942 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:24,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 278 transitions, 1984 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:24,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:24,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:24,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:25,566 INFO L130 PetriNetUnfolder]: 800/4378 cut-off events. [2022-12-05 18:50:25,567 INFO L131 PetriNetUnfolder]: For 10429/10611 co-relation queries the response was YES. [2022-12-05 18:50:25,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9990 conditions, 4378 events. 800/4378 cut-off events. For 10429/10611 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 43980 event pairs, 208 based on Foata normal form. 46/4127 useless extension candidates. Maximal degree in co-relation 9704. Up to 830 conditions per place. [2022-12-05 18:50:25,664 INFO L137 encePairwiseOnDemand]: 186/195 looper letters, 80 selfloop transitions, 22 changer transitions 7/319 dead transitions. [2022-12-05 18:50:25,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 319 transitions, 2388 flow [2022-12-05 18:50:25,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 18:50:25,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 18:50:25,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1375 transitions. [2022-12-05 18:50:25,668 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8814102564102564 [2022-12-05 18:50:25,668 INFO L175 Difference]: Start difference. First operand has 291 places, 278 transitions, 1984 flow. Second operand 8 states and 1375 transitions. [2022-12-05 18:50:25,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 319 transitions, 2388 flow [2022-12-05 18:50:25,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 319 transitions, 2351 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-05 18:50:25,701 INFO L231 Difference]: Finished difference. Result has 296 places, 278 transitions, 1996 flow [2022-12-05 18:50:25,701 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1947, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1996, PETRI_PLACES=296, PETRI_TRANSITIONS=278} [2022-12-05 18:50:25,702 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 123 predicate places. [2022-12-05 18:50:25,702 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 278 transitions, 1996 flow [2022-12-05 18:50:25,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:25,702 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:25,703 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:25,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-05 18:50:25,703 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:25,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:25,703 INFO L85 PathProgramCache]: Analyzing trace with hash 680354379, now seen corresponding path program 6 times [2022-12-05 18:50:25,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:25,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268939427] [2022-12-05 18:50:25,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:25,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:25,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:25,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268939427] [2022-12-05 18:50:25,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268939427] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:25,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:25,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:50:25,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122246571] [2022-12-05 18:50:25,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:25,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:50:25,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:25,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:50:25,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:50:25,815 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 195 [2022-12-05 18:50:25,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 278 transitions, 1996 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:25,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:25,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 195 [2022-12-05 18:50:25,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:26,421 INFO L130 PetriNetUnfolder]: 786/4201 cut-off events. [2022-12-05 18:50:26,421 INFO L131 PetriNetUnfolder]: For 10332/10490 co-relation queries the response was YES. [2022-12-05 18:50:26,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9690 conditions, 4201 events. 786/4201 cut-off events. For 10332/10490 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 41573 event pairs, 133 based on Foata normal form. 56/3988 useless extension candidates. Maximal degree in co-relation 9403. Up to 699 conditions per place. [2022-12-05 18:50:26,460 INFO L137 encePairwiseOnDemand]: 185/195 looper letters, 75 selfloop transitions, 30 changer transitions 5/320 dead transitions. [2022-12-05 18:50:26,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 320 transitions, 2405 flow [2022-12-05 18:50:26,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 18:50:26,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 18:50:26,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1216 transitions. [2022-12-05 18:50:26,462 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8908424908424909 [2022-12-05 18:50:26,462 INFO L175 Difference]: Start difference. First operand has 296 places, 278 transitions, 1996 flow. Second operand 7 states and 1216 transitions. [2022-12-05 18:50:26,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 320 transitions, 2405 flow [2022-12-05 18:50:26,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 320 transitions, 2364 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-12-05 18:50:26,494 INFO L231 Difference]: Finished difference. Result has 296 places, 278 transitions, 2015 flow [2022-12-05 18:50:26,495 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1957, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2015, PETRI_PLACES=296, PETRI_TRANSITIONS=278} [2022-12-05 18:50:26,495 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 123 predicate places. [2022-12-05 18:50:26,495 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 278 transitions, 2015 flow [2022-12-05 18:50:26,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:26,495 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:26,496 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:26,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-05 18:50:26,496 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:26,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:26,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1584705710, now seen corresponding path program 1 times [2022-12-05 18:50:26,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:26,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392740576] [2022-12-05 18:50:26,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:26,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:27,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:27,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392740576] [2022-12-05 18:50:27,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392740576] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:27,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:27,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-05 18:50:27,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044862406] [2022-12-05 18:50:27,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:27,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 18:50:27,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:27,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 18:50:27,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-12-05 18:50:27,165 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 195 [2022-12-05 18:50:27,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 278 transitions, 2015 flow. Second operand has 19 states, 19 states have (on average 126.47368421052632) internal successors, (2403), 19 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:27,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:27,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 195 [2022-12-05 18:50:27,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:31,468 INFO L130 PetriNetUnfolder]: 10327/23929 cut-off events. [2022-12-05 18:50:31,468 INFO L131 PetriNetUnfolder]: For 65593/65663 co-relation queries the response was YES. [2022-12-05 18:50:31,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58884 conditions, 23929 events. 10327/23929 cut-off events. For 65593/65663 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 255219 event pairs, 3531 based on Foata normal form. 30/21969 useless extension candidates. Maximal degree in co-relation 58570. Up to 5747 conditions per place. [2022-12-05 18:50:31,709 INFO L137 encePairwiseOnDemand]: 166/195 looper letters, 276 selfloop transitions, 61 changer transitions 0/509 dead transitions. [2022-12-05 18:50:31,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 509 transitions, 3951 flow [2022-12-05 18:50:31,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-05 18:50:31,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-05 18:50:31,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3118 transitions. [2022-12-05 18:50:31,712 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.69520624303233 [2022-12-05 18:50:31,712 INFO L175 Difference]: Start difference. First operand has 296 places, 278 transitions, 2015 flow. Second operand 23 states and 3118 transitions. [2022-12-05 18:50:31,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 509 transitions, 3951 flow [2022-12-05 18:50:31,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 509 transitions, 3858 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-12-05 18:50:31,810 INFO L231 Difference]: Finished difference. Result has 321 places, 308 transitions, 2406 flow [2022-12-05 18:50:31,810 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1937, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2406, PETRI_PLACES=321, PETRI_TRANSITIONS=308} [2022-12-05 18:50:31,810 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 148 predicate places. [2022-12-05 18:50:31,810 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 308 transitions, 2406 flow [2022-12-05 18:50:31,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 126.47368421052632) internal successors, (2403), 19 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:31,811 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:31,811 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:31,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-05 18:50:31,811 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:31,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:31,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1221597058, now seen corresponding path program 2 times [2022-12-05 18:50:31,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:31,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158061353] [2022-12-05 18:50:31,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:31,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:32,449 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:32,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:32,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158061353] [2022-12-05 18:50:32,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158061353] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:32,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:32,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-05 18:50:32,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505310222] [2022-12-05 18:50:32,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:32,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 18:50:32,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:32,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 18:50:32,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-12-05 18:50:32,452 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 195 [2022-12-05 18:50:32,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 308 transitions, 2406 flow. Second operand has 19 states, 19 states have (on average 126.47368421052632) internal successors, (2403), 19 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:32,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:32,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 195 [2022-12-05 18:50:32,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:39,382 INFO L130 PetriNetUnfolder]: 15127/37380 cut-off events. [2022-12-05 18:50:39,382 INFO L131 PetriNetUnfolder]: For 129614/129733 co-relation queries the response was YES. [2022-12-05 18:50:39,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107591 conditions, 37380 events. 15127/37380 cut-off events. For 129614/129733 co-relation queries the response was YES. Maximal size of possible extension queue 1293. Compared 441434 event pairs, 3578 based on Foata normal form. 88/36125 useless extension candidates. Maximal degree in co-relation 107254. Up to 5739 conditions per place. [2022-12-05 18:50:40,028 INFO L137 encePairwiseOnDemand]: 166/195 looper letters, 342 selfloop transitions, 86 changer transitions 0/600 dead transitions. [2022-12-05 18:50:40,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 600 transitions, 5660 flow [2022-12-05 18:50:40,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-05 18:50:40,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-05 18:50:40,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3401 transitions. [2022-12-05 18:50:40,031 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6976410256410256 [2022-12-05 18:50:40,031 INFO L175 Difference]: Start difference. First operand has 321 places, 308 transitions, 2406 flow. Second operand 25 states and 3401 transitions. [2022-12-05 18:50:40,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 600 transitions, 5660 flow [2022-12-05 18:50:40,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 600 transitions, 5566 flow, removed 15 selfloop flow, removed 9 redundant places. [2022-12-05 18:50:40,284 INFO L231 Difference]: Finished difference. Result has 349 places, 347 transitions, 3175 flow [2022-12-05 18:50:40,284 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=2328, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3175, PETRI_PLACES=349, PETRI_TRANSITIONS=347} [2022-12-05 18:50:40,285 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 176 predicate places. [2022-12-05 18:50:40,285 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 347 transitions, 3175 flow [2022-12-05 18:50:40,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 126.47368421052632) internal successors, (2403), 19 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:40,291 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:40,292 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:40,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-05 18:50:40,292 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:40,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:40,292 INFO L85 PathProgramCache]: Analyzing trace with hash -154646620, now seen corresponding path program 3 times [2022-12-05 18:50:40,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:40,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835820669] [2022-12-05 18:50:40,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:40,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:40,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:40,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835820669] [2022-12-05 18:50:40,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835820669] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:40,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:40,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-05 18:50:40,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790231604] [2022-12-05 18:50:40,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:40,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 18:50:40,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:40,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 18:50:40,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-12-05 18:50:40,919 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 195 [2022-12-05 18:50:40,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 347 transitions, 3175 flow. Second operand has 19 states, 19 states have (on average 126.47368421052632) internal successors, (2403), 19 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:40,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:40,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 195 [2022-12-05 18:50:40,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:50:50,198 INFO L130 PetriNetUnfolder]: 18509/46198 cut-off events. [2022-12-05 18:50:50,198 INFO L131 PetriNetUnfolder]: For 228232/228372 co-relation queries the response was YES. [2022-12-05 18:50:50,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146206 conditions, 46198 events. 18509/46198 cut-off events. For 228232/228372 co-relation queries the response was YES. Maximal size of possible extension queue 1668. Compared 568081 event pairs, 7040 based on Foata normal form. 110/44279 useless extension candidates. Maximal degree in co-relation 145856. Up to 11819 conditions per place. [2022-12-05 18:50:50,922 INFO L137 encePairwiseOnDemand]: 167/195 looper letters, 315 selfloop transitions, 138 changer transitions 0/625 dead transitions. [2022-12-05 18:50:50,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 625 transitions, 6417 flow [2022-12-05 18:50:50,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-05 18:50:50,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-05 18:50:50,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3111 transitions. [2022-12-05 18:50:50,926 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6936454849498328 [2022-12-05 18:50:50,926 INFO L175 Difference]: Start difference. First operand has 349 places, 347 transitions, 3175 flow. Second operand 23 states and 3111 transitions. [2022-12-05 18:50:50,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 625 transitions, 6417 flow [2022-12-05 18:50:51,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 625 transitions, 6246 flow, removed 48 selfloop flow, removed 10 redundant places. [2022-12-05 18:50:51,570 INFO L231 Difference]: Finished difference. Result has 374 places, 410 transitions, 4552 flow [2022-12-05 18:50:51,571 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=3028, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4552, PETRI_PLACES=374, PETRI_TRANSITIONS=410} [2022-12-05 18:50:51,571 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 201 predicate places. [2022-12-05 18:50:51,571 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 410 transitions, 4552 flow [2022-12-05 18:50:51,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 126.47368421052632) internal successors, (2403), 19 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:51,572 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:50:51,572 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:50:51,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-05 18:50:51,572 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:50:51,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:50:51,572 INFO L85 PathProgramCache]: Analyzing trace with hash -638311700, now seen corresponding path program 4 times [2022-12-05 18:50:51,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:50:51,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121485490] [2022-12-05 18:50:51,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:50:51,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:50:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:50:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:50:52,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:50:52,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121485490] [2022-12-05 18:50:52,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121485490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:50:52,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:50:52,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-05 18:50:52,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90614728] [2022-12-05 18:50:52,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:50:52,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 18:50:52,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:50:52,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 18:50:52,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-12-05 18:50:52,276 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 195 [2022-12-05 18:50:52,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 410 transitions, 4552 flow. Second operand has 19 states, 19 states have (on average 126.47368421052632) internal successors, (2403), 19 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:50:52,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:50:52,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 195 [2022-12-05 18:50:52,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:51:02,980 INFO L130 PetriNetUnfolder]: 18407/44921 cut-off events. [2022-12-05 18:51:02,980 INFO L131 PetriNetUnfolder]: For 313890/314191 co-relation queries the response was YES. [2022-12-05 18:51:03,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158011 conditions, 44921 events. 18407/44921 cut-off events. For 313890/314191 co-relation queries the response was YES. Maximal size of possible extension queue 1653. Compared 545057 event pairs, 8310 based on Foata normal form. 152/43082 useless extension candidates. Maximal degree in co-relation 157648. Up to 11439 conditions per place. [2022-12-05 18:51:03,857 INFO L137 encePairwiseOnDemand]: 166/195 looper letters, 305 selfloop transitions, 128 changer transitions 0/605 dead transitions. [2022-12-05 18:51:03,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 605 transitions, 7270 flow [2022-12-05 18:51:03,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-05 18:51:03,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-05 18:51:03,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2833 transitions. [2022-12-05 18:51:03,860 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6918192918192918 [2022-12-05 18:51:03,860 INFO L175 Difference]: Start difference. First operand has 374 places, 410 transitions, 4552 flow. Second operand 21 states and 2833 transitions. [2022-12-05 18:51:03,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 605 transitions, 7270 flow [2022-12-05 18:51:05,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 605 transitions, 6883 flow, removed 181 selfloop flow, removed 8 redundant places. [2022-12-05 18:51:05,360 INFO L231 Difference]: Finished difference. Result has 394 places, 431 transitions, 4963 flow [2022-12-05 18:51:05,361 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=4339, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4963, PETRI_PLACES=394, PETRI_TRANSITIONS=431} [2022-12-05 18:51:05,361 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 221 predicate places. [2022-12-05 18:51:05,361 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 431 transitions, 4963 flow [2022-12-05 18:51:05,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 126.47368421052632) internal successors, (2403), 19 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:51:05,362 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:51:05,362 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:51:05,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-05 18:51:05,362 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:51:05,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:51:05,362 INFO L85 PathProgramCache]: Analyzing trace with hash -951611070, now seen corresponding path program 5 times [2022-12-05 18:51:05,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:51:05,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40266147] [2022-12-05 18:51:05,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:51:05,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:51:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:51:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:51:05,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:51:05,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40266147] [2022-12-05 18:51:05,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40266147] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:51:05,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:51:05,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-05 18:51:05,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062973954] [2022-12-05 18:51:05,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:51:05,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 18:51:05,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:51:05,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 18:51:05,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-12-05 18:51:05,954 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 195 [2022-12-05 18:51:05,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 431 transitions, 4963 flow. Second operand has 19 states, 19 states have (on average 126.47368421052632) internal successors, (2403), 19 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:51:05,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:51:05,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 195 [2022-12-05 18:51:05,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:51:17,959 INFO L130 PetriNetUnfolder]: 21349/53148 cut-off events. [2022-12-05 18:51:17,959 INFO L131 PetriNetUnfolder]: For 384448/384734 co-relation queries the response was YES. [2022-12-05 18:51:18,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184640 conditions, 53148 events. 21349/53148 cut-off events. For 384448/384734 co-relation queries the response was YES. Maximal size of possible extension queue 1980. Compared 665841 event pairs, 8615 based on Foata normal form. 279/51122 useless extension candidates. Maximal degree in co-relation 184267. Up to 11193 conditions per place. [2022-12-05 18:51:19,272 INFO L137 encePairwiseOnDemand]: 167/195 looper letters, 349 selfloop transitions, 179 changer transitions 0/700 dead transitions. [2022-12-05 18:51:19,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 700 transitions, 8749 flow [2022-12-05 18:51:19,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-05 18:51:19,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-05 18:51:19,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3119 transitions. [2022-12-05 18:51:19,275 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6954292084726867 [2022-12-05 18:51:19,275 INFO L175 Difference]: Start difference. First operand has 394 places, 431 transitions, 4963 flow. Second operand 23 states and 3119 transitions. [2022-12-05 18:51:19,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 700 transitions, 8749 flow [2022-12-05 18:51:20,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 700 transitions, 8491 flow, removed 60 selfloop flow, removed 11 redundant places. [2022-12-05 18:51:20,982 INFO L231 Difference]: Finished difference. Result has 417 places, 494 transitions, 6537 flow [2022-12-05 18:51:20,983 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=4760, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=6537, PETRI_PLACES=417, PETRI_TRANSITIONS=494} [2022-12-05 18:51:20,983 INFO L294 CegarLoopForPetriNet]: 173 programPoint places, 244 predicate places. [2022-12-05 18:51:20,983 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 494 transitions, 6537 flow [2022-12-05 18:51:20,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 126.47368421052632) internal successors, (2403), 19 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:51:20,984 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:51:20,984 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:51:20,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-05 18:51:20,984 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:51:20,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:51:20,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1883362344, now seen corresponding path program 6 times [2022-12-05 18:51:20,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:51:20,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446901116] [2022-12-05 18:51:20,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:51:20,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:51:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:51:21,556 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-05 18:51:21,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:51:21,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446901116] [2022-12-05 18:51:21,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446901116] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:51:21,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:51:21,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-05 18:51:21,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148380187] [2022-12-05 18:51:21,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:51:21,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 18:51:21,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:51:21,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 18:51:21,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-12-05 18:51:21,558 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 195 [2022-12-05 18:51:21,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 494 transitions, 6537 flow. Second operand has 19 states, 19 states have (on average 126.47368421052632) internal successors, (2403), 19 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:51:21,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:51:21,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 195 [2022-12-05 18:51:21,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:51:34,008 INFO L130 PetriNetUnfolder]: 21427/51756 cut-off events. [2022-12-05 18:51:34,009 INFO L131 PetriNetUnfolder]: For 390408/390830 co-relation queries the response was YES. [2022-12-05 18:51:35,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185810 conditions, 51756 events. 21427/51756 cut-off events. For 390408/390830 co-relation queries the response was YES. Maximal size of possible extension queue 2011. Compared 639075 event pairs, 9637 based on Foata normal form. 183/49502 useless extension candidates. Maximal degree in co-relation 185425. Up to 14753 conditions per place. [2022-12-05 18:51:35,399 INFO L137 encePairwiseOnDemand]: 166/195 looper letters, 313 selfloop transitions, 160 changer transitions 0/645 dead transitions. [2022-12-05 18:51:35,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 645 transitions, 8854 flow [2022-12-05 18:51:35,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 18:51:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 18:51:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2553 transitions. [2022-12-05 18:51:35,402 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6890688259109312 [2022-12-05 18:51:35,402 INFO L175 Difference]: Start difference. First operand has 417 places, 494 transitions, 6537 flow. Second operand 19 states and 2553 transitions. [2022-12-05 18:51:35,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 645 transitions, 8854 flow