/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:21:40,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:21:40,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:21:40,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 18:21:40,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 18:21:40,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 18:21:40,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 18:21:40,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 18:21:40,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 18:21:40,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 18:21:40,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 18:21:40,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 18:21:40,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:21:40,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:21:40,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:21:40,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:21:40,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:21:40,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:21:40,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:21:40,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:21:40,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:21:40,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:21:40,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:21:40,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:21:40,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 18:21:40,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 18:21:40,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 18:21:40,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 18:21:40,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 18:21:40,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 18:21:40,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 18:21:40,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 18:21:40,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 18:21:40,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 18:21:40,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 18:21:40,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 18:21:40,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 18:21:40,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 18:21:40,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:21:40,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:21:40,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:21:40,271 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-VariableLbe.epf [2023-01-27 18:21:40,290 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:21:40,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:21:40,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:21:40,291 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:21:40,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:21:40,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:21:40,292 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:21:40,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:21:40,292 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:21:40,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:21:40,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:21:40,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:21:40,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:21:40,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:21:40,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:21:40,295 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:21:40,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:21:40,295 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:21:40,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:21:40,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:21:40,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:21:40,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:21:40,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:21:40,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:21:40,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:21:40,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:21:40,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:21:40,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:21:40,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:21:40,296 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:21:40,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:21:40,297 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:21:40,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:21:40,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:21:40,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:21:40,454 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:21:40,454 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:21:40,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-01-27 18:21:41,433 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:21:41,674 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:21:41,674 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-01-27 18:21:41,683 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a4768171/6054774dcd5549328e544a7fed64ef91/FLAGaa34f7bcc [2023-01-27 18:21:41,692 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a4768171/6054774dcd5549328e544a7fed64ef91 [2023-01-27 18:21:41,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:21:41,695 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:21:41,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:21:41,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:21:41,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:21:41,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:21:41" (1/1) ... [2023-01-27 18:21:41,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e05b58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:41, skipping insertion in model container [2023-01-27 18:21:41,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:21:41" (1/1) ... [2023-01-27 18:21:41,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:21:41,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:21:41,881 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i[947,960] [2023-01-27 18:21:42,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:21:42,095 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:21:42,102 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i[947,960] [2023-01-27 18:21:42,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:21:42,199 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:21:42,199 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:21:42,203 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:21:42,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:42 WrapperNode [2023-01-27 18:21:42,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:21:42,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:21:42,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:21:42,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:21:42,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:42" (1/1) ... [2023-01-27 18:21:42,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:42" (1/1) ... [2023-01-27 18:21:42,280 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 173 [2023-01-27 18:21:42,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:21:42,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:21:42,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:21:42,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:21:42,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:42" (1/1) ... [2023-01-27 18:21:42,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:42" (1/1) ... [2023-01-27 18:21:42,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:42" (1/1) ... [2023-01-27 18:21:42,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:42" (1/1) ... [2023-01-27 18:21:42,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:42" (1/1) ... [2023-01-27 18:21:42,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:42" (1/1) ... [2023-01-27 18:21:42,309 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:42" (1/1) ... [2023-01-27 18:21:42,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:42" (1/1) ... [2023-01-27 18:21:42,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:21:42,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:21:42,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:21:42,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:21:42,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:42" (1/1) ... [2023-01-27 18:21:42,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:21:42,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:21:42,406 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) [2023-01-27 18:21:42,433 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 [2023-01-27 18:21:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:21:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 18:21:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:21:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:21:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:21:42,462 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-27 18:21:42,462 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-27 18:21:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-27 18:21:42,463 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-27 18:21:42,463 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-27 18:21:42,464 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-27 18:21:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:21:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 18:21:42,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:21:42,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:21:42,465 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 18:21:42,568 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:21:42,569 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:21:42,956 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:21:43,101 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:21:43,101 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 18:21:43,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:21:43 BoogieIcfgContainer [2023-01-27 18:21:43,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:21:43,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:21:43,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:21:43,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:21:43,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:21:41" (1/3) ... [2023-01-27 18:21:43,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5628d9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:21:43, skipping insertion in model container [2023-01-27 18:21:43,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:42" (2/3) ... [2023-01-27 18:21:43,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5628d9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:21:43, skipping insertion in model container [2023-01-27 18:21:43,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:21:43" (3/3) ... [2023-01-27 18:21:43,110 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2023-01-27 18:21:43,120 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:21:43,121 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-27 18:21:43,121 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:21:43,154 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 18:21:43,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 112 transitions, 239 flow [2023-01-27 18:21:43,204 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2023-01-27 18:21:43,204 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:21:43,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-01-27 18:21:43,208 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 112 transitions, 239 flow [2023-01-27 18:21:43,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 109 transitions, 227 flow [2023-01-27 18:21:43,212 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:21:43,218 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 109 transitions, 227 flow [2023-01-27 18:21:43,219 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 109 transitions, 227 flow [2023-01-27 18:21:43,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 109 transitions, 227 flow [2023-01-27 18:21:43,243 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2023-01-27 18:21:43,243 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:21:43,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-01-27 18:21:43,245 INFO L119 LiptonReduction]: Number of co-enabled transitions 2202 [2023-01-27 18:21:46,793 INFO L134 LiptonReduction]: Checked pairs total: 6197 [2023-01-27 18:21:46,793 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-01-27 18:21:46,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 18:21:46,813 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;@53d5f6ed, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 18:21:46,813 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-27 18:21:46,819 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-01-27 18:21:46,819 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:21:46,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:46,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:21:46,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:21:46,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash 243412563, now seen corresponding path program 1 times [2023-01-27 18:21:46,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:46,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637573920] [2023-01-27 18:21:46,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:46,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:47,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:21:47,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:47,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637573920] [2023-01-27 18:21:47,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637573920] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:47,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:47,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:21:47,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804792884] [2023-01-27 18:21:47,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:47,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:21:47,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:47,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:21:47,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:21:47,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-01-27 18:21:47,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:47,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:47,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-01-27 18:21:47,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:47,787 INFO L130 PetriNetUnfolder]: 2147/3120 cut-off events. [2023-01-27 18:21:47,787 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-01-27 18:21:47,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6315 conditions, 3120 events. 2147/3120 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14344 event pairs, 322 based on Foata normal form. 0/2939 useless extension candidates. Maximal degree in co-relation 6304. Up to 2576 conditions per place. [2023-01-27 18:21:47,803 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 33 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2023-01-27 18:21:47,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 159 flow [2023-01-27 18:21:47,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:21:47,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:21:47,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-01-27 18:21:47,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5129449838187702 [2023-01-27 18:21:47,819 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-01-27 18:21:47,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-01-27 18:21:47,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:47,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-01-27 18:21:47,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:47,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:47,829 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:47,831 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 61 flow. Second operand 3 states and 317 transitions. [2023-01-27 18:21:47,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 159 flow [2023-01-27 18:21:47,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 18:21:47,835 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 58 flow [2023-01-27 18:21:47,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-01-27 18:21:47,840 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-01-27 18:21:47,840 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 58 flow [2023-01-27 18:21:47,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:47,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:47,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:21:47,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 18:21:47,841 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:21:47,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:47,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1991260440, now seen corresponding path program 1 times [2023-01-27 18:21:47,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:47,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203758432] [2023-01-27 18:21:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:47,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:21:48,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:48,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203758432] [2023-01-27 18:21:48,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203758432] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:48,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:48,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:21:48,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977650716] [2023-01-27 18:21:48,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:48,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:21:48,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:48,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:21:48,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:21:48,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 206 [2023-01-27 18:21:48,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:48,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:48,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 206 [2023-01-27 18:21:48,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:48,705 INFO L130 PetriNetUnfolder]: 1686/2503 cut-off events. [2023-01-27 18:21:48,706 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-01-27 18:21:48,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5164 conditions, 2503 events. 1686/2503 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11342 event pairs, 542 based on Foata normal form. 6/2509 useless extension candidates. Maximal degree in co-relation 5154. Up to 2419 conditions per place. [2023-01-27 18:21:48,714 INFO L137 encePairwiseOnDemand]: 202/206 looper letters, 33 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2023-01-27 18:21:48,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 162 flow [2023-01-27 18:21:48,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:21:48,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:21:48,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-01-27 18:21:48,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967637540453074 [2023-01-27 18:21:48,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-01-27 18:21:48,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-01-27 18:21:48,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:48,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-01-27 18:21:48,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:48,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:48,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:48,721 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 58 flow. Second operand 3 states and 307 transitions. [2023-01-27 18:21:48,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 162 flow [2023-01-27 18:21:48,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:21:48,723 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 73 flow [2023-01-27 18:21:48,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-01-27 18:21:48,723 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-01-27 18:21:48,723 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 73 flow [2023-01-27 18:21:48,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:48,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:48,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:21:48,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 18:21:48,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:21:48,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:48,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1599530495, now seen corresponding path program 1 times [2023-01-27 18:21:48,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:48,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768920777] [2023-01-27 18:21:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:48,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:21:48,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:48,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768920777] [2023-01-27 18:21:48,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768920777] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:48,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:48,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:21:48,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317097851] [2023-01-27 18:21:48,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:48,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:21:48,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:48,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:21:48,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:21:48,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-01-27 18:21:48,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:48,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:48,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-01-27 18:21:48,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:49,165 INFO L130 PetriNetUnfolder]: 1466/2169 cut-off events. [2023-01-27 18:21:49,166 INFO L131 PetriNetUnfolder]: For 318/318 co-relation queries the response was YES. [2023-01-27 18:21:49,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4783 conditions, 2169 events. 1466/2169 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9230 event pairs, 662 based on Foata normal form. 84/2252 useless extension candidates. Maximal degree in co-relation 4772. Up to 1189 conditions per place. [2023-01-27 18:21:49,175 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 34 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-01-27 18:21:49,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 169 flow [2023-01-27 18:21:49,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:21:49,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:21:49,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-01-27 18:21:49,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080906148867314 [2023-01-27 18:21:49,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-01-27 18:21:49,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-01-27 18:21:49,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:49,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-01-27 18:21:49,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:49,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:49,178 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:49,178 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 73 flow. Second operand 3 states and 314 transitions. [2023-01-27 18:21:49,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 169 flow [2023-01-27 18:21:49,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 18:21:49,180 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 78 flow [2023-01-27 18:21:49,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-01-27 18:21:49,181 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-01-27 18:21:49,183 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 78 flow [2023-01-27 18:21:49,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:49,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:49,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:21:49,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 18:21:49,184 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:21:49,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:49,184 INFO L85 PathProgramCache]: Analyzing trace with hash -576501497, now seen corresponding path program 1 times [2023-01-27 18:21:49,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:49,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175862369] [2023-01-27 18:21:49,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:49,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:49,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:21:49,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:49,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175862369] [2023-01-27 18:21:49,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175862369] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:49,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:49,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 18:21:49,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386247630] [2023-01-27 18:21:49,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:49,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 18:21:49,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:49,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 18:21:49,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 18:21:49,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-01-27 18:21:49,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:49,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:49,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-01-27 18:21:49,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:50,345 INFO L130 PetriNetUnfolder]: 2017/2976 cut-off events. [2023-01-27 18:21:50,345 INFO L131 PetriNetUnfolder]: For 498/498 co-relation queries the response was YES. [2023-01-27 18:21:50,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6805 conditions, 2976 events. 2017/2976 cut-off events. For 498/498 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 13968 event pairs, 1046 based on Foata normal form. 30/3005 useless extension candidates. Maximal degree in co-relation 6792. Up to 2320 conditions per place. [2023-01-27 18:21:50,357 INFO L137 encePairwiseOnDemand]: 194/206 looper letters, 40 selfloop transitions, 21 changer transitions 0/62 dead transitions. [2023-01-27 18:21:50,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 281 flow [2023-01-27 18:21:50,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:21:50,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:21:50,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 576 transitions. [2023-01-27 18:21:50,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46601941747572817 [2023-01-27 18:21:50,359 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 576 transitions. [2023-01-27 18:21:50,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 576 transitions. [2023-01-27 18:21:50,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:50,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 576 transitions. [2023-01-27 18:21:50,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:50,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:50,366 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:50,366 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 78 flow. Second operand 6 states and 576 transitions. [2023-01-27 18:21:50,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 281 flow [2023-01-27 18:21:50,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 62 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:21:50,374 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 201 flow [2023-01-27 18:21:50,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=201, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2023-01-27 18:21:50,375 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-01-27 18:21:50,375 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 201 flow [2023-01-27 18:21:50,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:50,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:50,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:21:50,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 18:21:50,376 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:21:50,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:50,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2100453712, now seen corresponding path program 1 times [2023-01-27 18:21:50,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:50,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941589744] [2023-01-27 18:21:50,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:50,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:50,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:21:50,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:50,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941589744] [2023-01-27 18:21:50,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941589744] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:50,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:50,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 18:21:50,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671287264] [2023-01-27 18:21:50,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:50,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 18:21:50,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:50,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 18:21:50,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-01-27 18:21:50,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-01-27 18:21:51,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 201 flow. Second operand has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:51,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:51,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-01-27 18:21:51,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:51,667 INFO L130 PetriNetUnfolder]: 3104/4623 cut-off events. [2023-01-27 18:21:51,668 INFO L131 PetriNetUnfolder]: For 2825/2825 co-relation queries the response was YES. [2023-01-27 18:21:51,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13619 conditions, 4623 events. 3104/4623 cut-off events. For 2825/2825 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 23603 event pairs, 940 based on Foata normal form. 6/4628 useless extension candidates. Maximal degree in co-relation 13603. Up to 2016 conditions per place. [2023-01-27 18:21:51,695 INFO L137 encePairwiseOnDemand]: 194/206 looper letters, 65 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2023-01-27 18:21:51,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 89 transitions, 537 flow [2023-01-27 18:21:51,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:21:51,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:21:51,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 677 transitions. [2023-01-27 18:21:51,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4694868238557559 [2023-01-27 18:21:51,697 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 677 transitions. [2023-01-27 18:21:51,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 677 transitions. [2023-01-27 18:21:51,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:51,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 677 transitions. [2023-01-27 18:21:51,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:51,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:51,703 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:51,703 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 201 flow. Second operand 7 states and 677 transitions. [2023-01-27 18:21:51,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 89 transitions, 537 flow [2023-01-27 18:21:51,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 89 transitions, 532 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-27 18:21:51,713 INFO L231 Difference]: Finished difference. Result has 50 places, 56 transitions, 354 flow [2023-01-27 18:21:51,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=354, PETRI_PLACES=50, PETRI_TRANSITIONS=56} [2023-01-27 18:21:51,715 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2023-01-27 18:21:51,715 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 56 transitions, 354 flow [2023-01-27 18:21:51,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:51,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:51,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:21:51,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 18:21:51,715 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:21:51,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:51,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1048871140, now seen corresponding path program 2 times [2023-01-27 18:21:51,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:51,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669461957] [2023-01-27 18:21:51,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:51,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:21:51,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:51,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669461957] [2023-01-27 18:21:51,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669461957] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:51,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:51,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:21:51,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886317277] [2023-01-27 18:21:51,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:51,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:21:51,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:51,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:21:51,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:21:51,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-01-27 18:21:51,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 56 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:51,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:51,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-01-27 18:21:51,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:52,332 INFO L130 PetriNetUnfolder]: 2310/3672 cut-off events. [2023-01-27 18:21:52,332 INFO L131 PetriNetUnfolder]: For 8086/8086 co-relation queries the response was YES. [2023-01-27 18:21:52,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13451 conditions, 3672 events. 2310/3672 cut-off events. For 8086/8086 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 20357 event pairs, 515 based on Foata normal form. 392/4063 useless extension candidates. Maximal degree in co-relation 13431. Up to 1342 conditions per place. [2023-01-27 18:21:52,354 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 138 selfloop transitions, 5 changer transitions 1/145 dead transitions. [2023-01-27 18:21:52,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 145 transitions, 1208 flow [2023-01-27 18:21:52,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:21:52,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:21:52,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 406 transitions. [2023-01-27 18:21:52,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49271844660194175 [2023-01-27 18:21:52,356 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 406 transitions. [2023-01-27 18:21:52,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 406 transitions. [2023-01-27 18:21:52,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:52,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 406 transitions. [2023-01-27 18:21:52,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:52,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:52,358 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:52,358 INFO L175 Difference]: Start difference. First operand has 50 places, 56 transitions, 354 flow. Second operand 4 states and 406 transitions. [2023-01-27 18:21:52,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 145 transitions, 1208 flow [2023-01-27 18:21:52,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 145 transitions, 1117 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-01-27 18:21:52,369 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 351 flow [2023-01-27 18:21:52,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2023-01-27 18:21:52,370 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-01-27 18:21:52,371 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 351 flow [2023-01-27 18:21:52,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:52,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:52,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:21:52,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 18:21:52,371 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:21:52,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:52,371 INFO L85 PathProgramCache]: Analyzing trace with hash -393579275, now seen corresponding path program 1 times [2023-01-27 18:21:52,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:52,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050150156] [2023-01-27 18:21:52,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:52,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:21:52,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:52,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050150156] [2023-01-27 18:21:52,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050150156] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:52,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:52,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 18:21:52,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198466320] [2023-01-27 18:21:52,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:52,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:21:52,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:52,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:21:52,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:21:52,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-01-27 18:21:52,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 351 flow. Second operand has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:52,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:52,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-01-27 18:21:52,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:52,915 INFO L130 PetriNetUnfolder]: 1049/1792 cut-off events. [2023-01-27 18:21:52,915 INFO L131 PetriNetUnfolder]: For 3886/3886 co-relation queries the response was YES. [2023-01-27 18:21:52,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7306 conditions, 1792 events. 1049/1792 cut-off events. For 3886/3886 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9282 event pairs, 182 based on Foata normal form. 176/1967 useless extension candidates. Maximal degree in co-relation 7284. Up to 798 conditions per place. [2023-01-27 18:21:52,923 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 136 selfloop transitions, 8 changer transitions 1/146 dead transitions. [2023-01-27 18:21:52,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 146 transitions, 1167 flow [2023-01-27 18:21:52,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:21:52,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:21:52,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 509 transitions. [2023-01-27 18:21:52,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4941747572815534 [2023-01-27 18:21:52,925 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 509 transitions. [2023-01-27 18:21:52,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 509 transitions. [2023-01-27 18:21:52,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:52,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 509 transitions. [2023-01-27 18:21:52,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:52,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:52,927 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:52,927 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 351 flow. Second operand 5 states and 509 transitions. [2023-01-27 18:21:52,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 146 transitions, 1167 flow [2023-01-27 18:21:52,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 146 transitions, 1157 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 18:21:52,934 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 391 flow [2023-01-27 18:21:52,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2023-01-27 18:21:52,935 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2023-01-27 18:21:52,935 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 391 flow [2023-01-27 18:21:52,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:52,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:52,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:21:52,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 18:21:52,936 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:21:52,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:52,936 INFO L85 PathProgramCache]: Analyzing trace with hash 720337333, now seen corresponding path program 1 times [2023-01-27 18:21:52,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:52,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014376843] [2023-01-27 18:21:52,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:52,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:21:53,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:53,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014376843] [2023-01-27 18:21:53,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014376843] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:53,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:53,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 18:21:53,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62188654] [2023-01-27 18:21:53,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:53,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 18:21:53,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:53,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 18:21:53,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-01-27 18:21:53,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-01-27 18:21:53,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 391 flow. Second operand has 9 states, 9 states have (on average 88.0) internal successors, (792), 9 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:53,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:53,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-01-27 18:21:53,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:54,255 INFO L130 PetriNetUnfolder]: 978/1747 cut-off events. [2023-01-27 18:21:54,255 INFO L131 PetriNetUnfolder]: For 4227/4227 co-relation queries the response was YES. [2023-01-27 18:21:54,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7483 conditions, 1747 events. 978/1747 cut-off events. For 4227/4227 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9386 event pairs, 61 based on Foata normal form. 12/1759 useless extension candidates. Maximal degree in co-relation 7459. Up to 816 conditions per place. [2023-01-27 18:21:54,262 INFO L137 encePairwiseOnDemand]: 194/206 looper letters, 81 selfloop transitions, 21 changer transitions 30/133 dead transitions. [2023-01-27 18:21:54,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 133 transitions, 1117 flow [2023-01-27 18:21:54,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 18:21:54,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 18:21:54,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 869 transitions. [2023-01-27 18:21:54,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46871628910463864 [2023-01-27 18:21:54,265 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 869 transitions. [2023-01-27 18:21:54,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 869 transitions. [2023-01-27 18:21:54,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:54,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 869 transitions. [2023-01-27 18:21:54,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.55555555555556) internal successors, (869), 9 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:54,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:54,269 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:54,269 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 391 flow. Second operand 9 states and 869 transitions. [2023-01-27 18:21:54,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 133 transitions, 1117 flow [2023-01-27 18:21:54,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 133 transitions, 1011 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-01-27 18:21:54,277 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 440 flow [2023-01-27 18:21:54,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=440, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-01-27 18:21:54,279 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2023-01-27 18:21:54,279 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 440 flow [2023-01-27 18:21:54,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 88.0) internal successors, (792), 9 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:54,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:54,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:21:54,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 18:21:54,280 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:21:54,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:54,280 INFO L85 PathProgramCache]: Analyzing trace with hash -69634631, now seen corresponding path program 2 times [2023-01-27 18:21:54,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:54,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906475108] [2023-01-27 18:21:54,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:54,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:21:55,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:55,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906475108] [2023-01-27 18:21:55,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906475108] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:55,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:55,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 18:21:55,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080163620] [2023-01-27 18:21:55,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:55,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 18:21:55,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:55,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 18:21:55,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-27 18:21:55,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 206 [2023-01-27 18:21:55,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 440 flow. Second operand has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:55,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:55,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 206 [2023-01-27 18:21:55,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:55,978 INFO L130 PetriNetUnfolder]: 1099/1981 cut-off events. [2023-01-27 18:21:55,979 INFO L131 PetriNetUnfolder]: For 5091/5091 co-relation queries the response was YES. [2023-01-27 18:21:55,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8689 conditions, 1981 events. 1099/1981 cut-off events. For 5091/5091 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11222 event pairs, 97 based on Foata normal form. 10/1991 useless extension candidates. Maximal degree in co-relation 8663. Up to 840 conditions per place. [2023-01-27 18:21:55,986 INFO L137 encePairwiseOnDemand]: 195/206 looper letters, 92 selfloop transitions, 23 changer transitions 23/139 dead transitions. [2023-01-27 18:21:55,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 139 transitions, 1184 flow [2023-01-27 18:21:55,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 18:21:55,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 18:21:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 772 transitions. [2023-01-27 18:21:55,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684466019417476 [2023-01-27 18:21:55,989 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 772 transitions. [2023-01-27 18:21:55,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 772 transitions. [2023-01-27 18:21:55,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:55,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 772 transitions. [2023-01-27 18:21:55,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.5) internal successors, (772), 8 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:55,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:55,994 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:55,994 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 440 flow. Second operand 8 states and 772 transitions. [2023-01-27 18:21:55,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 139 transitions, 1184 flow [2023-01-27 18:21:56,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 139 transitions, 1149 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-27 18:21:56,004 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 563 flow [2023-01-27 18:21:56,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=563, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2023-01-27 18:21:56,005 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-01-27 18:21:56,005 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 563 flow [2023-01-27 18:21:56,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:56,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:56,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:21:56,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 18:21:56,006 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:21:56,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:56,006 INFO L85 PathProgramCache]: Analyzing trace with hash 653242567, now seen corresponding path program 1 times [2023-01-27 18:21:56,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:56,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023772448] [2023-01-27 18:21:56,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:56,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:56,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:21:56,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:56,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023772448] [2023-01-27 18:21:56,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023772448] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:56,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:56,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 18:21:56,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967350089] [2023-01-27 18:21:56,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:56,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 18:21:56,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:56,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 18:21:56,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 18:21:56,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-01-27 18:21:56,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 563 flow. Second operand has 6 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:56,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:56,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-01-27 18:21:56,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:56,602 INFO L130 PetriNetUnfolder]: 865/1564 cut-off events. [2023-01-27 18:21:56,602 INFO L131 PetriNetUnfolder]: For 6038/6038 co-relation queries the response was YES. [2023-01-27 18:21:56,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7214 conditions, 1564 events. 865/1564 cut-off events. For 6038/6038 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8667 event pairs, 210 based on Foata normal form. 43/1606 useless extension candidates. Maximal degree in co-relation 7185. Up to 738 conditions per place. [2023-01-27 18:21:56,610 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 109 selfloop transitions, 11 changer transitions 14/135 dead transitions. [2023-01-27 18:21:56,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 135 transitions, 1364 flow [2023-01-27 18:21:56,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:21:56,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:21:56,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 582 transitions. [2023-01-27 18:21:56,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470873786407767 [2023-01-27 18:21:56,613 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 582 transitions. [2023-01-27 18:21:56,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 582 transitions. [2023-01-27 18:21:56,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:56,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 582 transitions. [2023-01-27 18:21:56,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:56,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:56,615 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:56,615 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 563 flow. Second operand 6 states and 582 transitions. [2023-01-27 18:21:56,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 135 transitions, 1364 flow [2023-01-27 18:21:56,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 135 transitions, 1251 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-01-27 18:21:56,624 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 519 flow [2023-01-27 18:21:56,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=519, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2023-01-27 18:21:56,625 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-01-27 18:21:56,625 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 519 flow [2023-01-27 18:21:56,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:56,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:56,626 INFO L208 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] [2023-01-27 18:21:56,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 18:21:56,626 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:21:56,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:56,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1161937857, now seen corresponding path program 1 times [2023-01-27 18:21:56,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:56,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680183236] [2023-01-27 18:21:56,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:56,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:56,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:21:56,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:56,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680183236] [2023-01-27 18:21:56,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680183236] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:56,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:56,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:21:56,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854829714] [2023-01-27 18:21:56,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:56,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:21:56,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:56,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:21:56,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:21:56,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 206 [2023-01-27 18:21:56,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 519 flow. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:56,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:56,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 206 [2023-01-27 18:21:56,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:57,221 INFO L130 PetriNetUnfolder]: 1354/2377 cut-off events. [2023-01-27 18:21:57,221 INFO L131 PetriNetUnfolder]: For 8238/8238 co-relation queries the response was YES. [2023-01-27 18:21:57,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11109 conditions, 2377 events. 1354/2377 cut-off events. For 8238/8238 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13629 event pairs, 188 based on Foata normal form. 2/2379 useless extension candidates. Maximal degree in co-relation 11080. Up to 1361 conditions per place. [2023-01-27 18:21:57,230 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 65 selfloop transitions, 1 changer transitions 71/137 dead transitions. [2023-01-27 18:21:57,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 137 transitions, 1337 flow [2023-01-27 18:21:57,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:21:57,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:21:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 412 transitions. [2023-01-27 18:21:57,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-01-27 18:21:57,232 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 412 transitions. [2023-01-27 18:21:57,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 412 transitions. [2023-01-27 18:21:57,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:57,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 412 transitions. [2023-01-27 18:21:57,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:57,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:57,234 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:57,234 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 519 flow. Second operand 4 states and 412 transitions. [2023-01-27 18:21:57,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 137 transitions, 1337 flow [2023-01-27 18:21:57,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 137 transitions, 1175 flow, removed 28 selfloop flow, removed 10 redundant places. [2023-01-27 18:21:57,247 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 353 flow [2023-01-27 18:21:57,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=353, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-01-27 18:21:57,248 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2023-01-27 18:21:57,248 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 353 flow [2023-01-27 18:21:57,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:57,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:57,248 INFO L208 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] [2023-01-27 18:21:57,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 18:21:57,248 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:21:57,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:57,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1198941303, now seen corresponding path program 2 times [2023-01-27 18:21:57,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:57,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233752399] [2023-01-27 18:21:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:57,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:58,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:21:58,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:58,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233752399] [2023-01-27 18:21:58,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233752399] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:58,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:58,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 18:21:58,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052375175] [2023-01-27 18:21:58,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:58,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 18:21:58,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:58,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 18:21:58,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-01-27 18:21:58,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 206 [2023-01-27 18:21:58,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 353 flow. Second operand has 8 states, 8 states have (on average 86.875) internal successors, (695), 8 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:58,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:58,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 206 [2023-01-27 18:21:58,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:58,716 INFO L130 PetriNetUnfolder]: 843/1616 cut-off events. [2023-01-27 18:21:58,716 INFO L131 PetriNetUnfolder]: For 4138/4138 co-relation queries the response was YES. [2023-01-27 18:21:58,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6858 conditions, 1616 events. 843/1616 cut-off events. For 4138/4138 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9239 event pairs, 215 based on Foata normal form. 1/1609 useless extension candidates. Maximal degree in co-relation 6833. Up to 932 conditions per place. [2023-01-27 18:21:58,722 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 53 selfloop transitions, 10 changer transitions 58/122 dead transitions. [2023-01-27 18:21:58,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 122 transitions, 996 flow [2023-01-27 18:21:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 18:21:58,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 18:21:58,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 747 transitions. [2023-01-27 18:21:58,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532766990291262 [2023-01-27 18:21:58,725 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 747 transitions. [2023-01-27 18:21:58,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 747 transitions. [2023-01-27 18:21:58,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:58,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 747 transitions. [2023-01-27 18:21:58,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.375) internal successors, (747), 8 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:58,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:58,728 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:58,728 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 353 flow. Second operand 8 states and 747 transitions. [2023-01-27 18:21:58,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 122 transitions, 996 flow [2023-01-27 18:21:58,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 122 transitions, 984 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-27 18:21:58,736 INFO L231 Difference]: Finished difference. Result has 72 places, 54 transitions, 396 flow [2023-01-27 18:21:58,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=396, PETRI_PLACES=72, PETRI_TRANSITIONS=54} [2023-01-27 18:21:58,736 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-01-27 18:21:58,736 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 54 transitions, 396 flow [2023-01-27 18:21:58,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 86.875) internal successors, (695), 8 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:58,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:58,737 INFO L208 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] [2023-01-27 18:21:58,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 18:21:58,737 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:21:58,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:58,737 INFO L85 PathProgramCache]: Analyzing trace with hash 309582873, now seen corresponding path program 3 times [2023-01-27 18:21:58,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:58,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322683041] [2023-01-27 18:21:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:58,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:59,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:21:59,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:59,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322683041] [2023-01-27 18:21:59,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322683041] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:59,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:59,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 18:21:59,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236515785] [2023-01-27 18:21:59,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:59,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 18:21:59,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:59,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 18:21:59,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-27 18:21:59,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-01-27 18:21:59,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 54 transitions, 396 flow. Second operand has 8 states, 8 states have (on average 89.875) internal successors, (719), 8 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:59,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:59,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-01-27 18:21:59,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:59,719 INFO L130 PetriNetUnfolder]: 665/1303 cut-off events. [2023-01-27 18:21:59,719 INFO L131 PetriNetUnfolder]: For 5338/5339 co-relation queries the response was YES. [2023-01-27 18:21:59,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6193 conditions, 1303 events. 665/1303 cut-off events. For 5338/5339 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7246 event pairs, 384 based on Foata normal form. 1/1293 useless extension candidates. Maximal degree in co-relation 6170. Up to 961 conditions per place. [2023-01-27 18:21:59,725 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 43 selfloop transitions, 16 changer transitions 37/97 dead transitions. [2023-01-27 18:21:59,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 97 transitions, 870 flow [2023-01-27 18:21:59,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:21:59,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:21:59,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 668 transitions. [2023-01-27 18:21:59,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463245492371706 [2023-01-27 18:21:59,727 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 668 transitions. [2023-01-27 18:21:59,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 668 transitions. [2023-01-27 18:21:59,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:59,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 668 transitions. [2023-01-27 18:21:59,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.42857142857143) internal successors, (668), 7 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:59,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:59,731 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:59,731 INFO L175 Difference]: Start difference. First operand has 72 places, 54 transitions, 396 flow. Second operand 7 states and 668 transitions. [2023-01-27 18:21:59,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 97 transitions, 870 flow [2023-01-27 18:21:59,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 97 transitions, 831 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-01-27 18:21:59,738 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 442 flow [2023-01-27 18:21:59,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2023-01-27 18:21:59,738 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2023-01-27 18:21:59,739 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 442 flow [2023-01-27 18:21:59,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.875) internal successors, (719), 8 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:21:59,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:59,739 INFO L208 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] [2023-01-27 18:21:59,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 18:21:59,739 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:21:59,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:59,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1196264807, now seen corresponding path program 4 times [2023-01-27 18:21:59,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:59,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053828429] [2023-01-27 18:21:59,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:59,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:01,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:01,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053828429] [2023-01-27 18:22:01,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053828429] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:01,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:01,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 18:22:01,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863023449] [2023-01-27 18:22:01,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:01,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 18:22:01,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:01,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 18:22:01,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-01-27 18:22:01,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 206 [2023-01-27 18:22:01,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 442 flow. Second operand has 12 states, 12 states have (on average 81.91666666666667) internal successors, (983), 12 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:01,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:01,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 206 [2023-01-27 18:22:01,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:01,988 INFO L130 PetriNetUnfolder]: 677/1382 cut-off events. [2023-01-27 18:22:01,988 INFO L131 PetriNetUnfolder]: For 6604/6604 co-relation queries the response was YES. [2023-01-27 18:22:01,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6937 conditions, 1382 events. 677/1382 cut-off events. For 6604/6604 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8068 event pairs, 148 based on Foata normal form. 4/1379 useless extension candidates. Maximal degree in co-relation 6913. Up to 532 conditions per place. [2023-01-27 18:22:01,995 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 37 selfloop transitions, 11 changer transitions 81/130 dead transitions. [2023-01-27 18:22:01,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 130 transitions, 1183 flow [2023-01-27 18:22:01,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 18:22:01,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 18:22:01,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 808 transitions. [2023-01-27 18:22:01,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43581445523193096 [2023-01-27 18:22:01,998 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 808 transitions. [2023-01-27 18:22:01,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 808 transitions. [2023-01-27 18:22:01,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:01,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 808 transitions. [2023-01-27 18:22:01,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 89.77777777777777) internal successors, (808), 9 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:02,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:02,002 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:02,002 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 442 flow. Second operand 9 states and 808 transitions. [2023-01-27 18:22:02,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 130 transitions, 1183 flow [2023-01-27 18:22:02,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 130 transitions, 1094 flow, removed 23 selfloop flow, removed 7 redundant places. [2023-01-27 18:22:02,011 INFO L231 Difference]: Finished difference. Result has 76 places, 41 transitions, 316 flow [2023-01-27 18:22:02,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=316, PETRI_PLACES=76, PETRI_TRANSITIONS=41} [2023-01-27 18:22:02,012 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2023-01-27 18:22:02,012 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 41 transitions, 316 flow [2023-01-27 18:22:02,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.91666666666667) internal successors, (983), 12 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:02,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:02,012 INFO L208 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] [2023-01-27 18:22:02,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 18:22:02,012 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:22:02,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:02,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1417680957, now seen corresponding path program 5 times [2023-01-27 18:22:02,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:02,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757068420] [2023-01-27 18:22:02,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:02,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:03,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:03,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757068420] [2023-01-27 18:22:03,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757068420] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:03,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:03,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 18:22:03,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601602573] [2023-01-27 18:22:03,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:03,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 18:22:03,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:03,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 18:22:03,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-01-27 18:22:03,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-01-27 18:22:03,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 41 transitions, 316 flow. Second operand has 8 states, 8 states have (on average 85.875) internal successors, (687), 8 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:03,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:03,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-01-27 18:22:03,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:03,417 INFO L130 PetriNetUnfolder]: 311/625 cut-off events. [2023-01-27 18:22:03,417 INFO L131 PetriNetUnfolder]: For 3100/3100 co-relation queries the response was YES. [2023-01-27 18:22:03,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3109 conditions, 625 events. 311/625 cut-off events. For 3100/3100 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2832 event pairs, 73 based on Foata normal form. 1/618 useless extension candidates. Maximal degree in co-relation 3083. Up to 233 conditions per place. [2023-01-27 18:22:03,420 INFO L137 encePairwiseOnDemand]: 197/206 looper letters, 63 selfloop transitions, 15 changer transitions 31/110 dead transitions. [2023-01-27 18:22:03,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 110 transitions, 964 flow [2023-01-27 18:22:03,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 18:22:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 18:22:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 822 transitions. [2023-01-27 18:22:03,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44336569579288027 [2023-01-27 18:22:03,422 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 822 transitions. [2023-01-27 18:22:03,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 822 transitions. [2023-01-27 18:22:03,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:03,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 822 transitions. [2023-01-27 18:22:03,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.33333333333333) internal successors, (822), 9 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:03,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:03,426 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:03,426 INFO L175 Difference]: Start difference. First operand has 76 places, 41 transitions, 316 flow. Second operand 9 states and 822 transitions. [2023-01-27 18:22:03,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 110 transitions, 964 flow [2023-01-27 18:22:03,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 110 transitions, 862 flow, removed 40 selfloop flow, removed 11 redundant places. [2023-01-27 18:22:03,431 INFO L231 Difference]: Finished difference. Result has 69 places, 46 transitions, 353 flow [2023-01-27 18:22:03,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=353, PETRI_PLACES=69, PETRI_TRANSITIONS=46} [2023-01-27 18:22:03,432 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-01-27 18:22:03,432 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 46 transitions, 353 flow [2023-01-27 18:22:03,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.875) internal successors, (687), 8 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:03,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:03,432 INFO L208 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] [2023-01-27 18:22:03,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-27 18:22:03,432 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:22:03,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:03,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1521466457, now seen corresponding path program 6 times [2023-01-27 18:22:03,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:03,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390071836] [2023-01-27 18:22:03,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:03,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:05,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:05,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390071836] [2023-01-27 18:22:05,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390071836] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:05,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:05,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 18:22:05,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427844679] [2023-01-27 18:22:05,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:05,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 18:22:05,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:05,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 18:22:05,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-01-27 18:22:05,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-01-27 18:22:05,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 46 transitions, 353 flow. Second operand has 11 states, 11 states have (on average 85.0909090909091) internal successors, (936), 11 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:05,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:05,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-01-27 18:22:05,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:05,354 INFO L130 PetriNetUnfolder]: 310/638 cut-off events. [2023-01-27 18:22:05,354 INFO L131 PetriNetUnfolder]: For 2302/2302 co-relation queries the response was YES. [2023-01-27 18:22:05,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3029 conditions, 638 events. 310/638 cut-off events. For 2302/2302 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3069 event pairs, 18 based on Foata normal form. 1/634 useless extension candidates. Maximal degree in co-relation 3006. Up to 259 conditions per place. [2023-01-27 18:22:05,357 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 60 selfloop transitions, 11 changer transitions 9/81 dead transitions. [2023-01-27 18:22:05,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 81 transitions, 725 flow [2023-01-27 18:22:05,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:22:05,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:22:05,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 551 transitions. [2023-01-27 18:22:05,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4457928802588997 [2023-01-27 18:22:05,359 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 551 transitions. [2023-01-27 18:22:05,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 551 transitions. [2023-01-27 18:22:05,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:05,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 551 transitions. [2023-01-27 18:22:05,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:05,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:05,362 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:05,362 INFO L175 Difference]: Start difference. First operand has 69 places, 46 transitions, 353 flow. Second operand 6 states and 551 transitions. [2023-01-27 18:22:05,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 81 transitions, 725 flow [2023-01-27 18:22:05,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 681 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-01-27 18:22:05,366 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 402 flow [2023-01-27 18:22:05,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2023-01-27 18:22:05,367 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2023-01-27 18:22:05,367 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 402 flow [2023-01-27 18:22:05,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 85.0909090909091) internal successors, (936), 11 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:05,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:05,367 INFO L208 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] [2023-01-27 18:22:05,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-27 18:22:05,367 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:22:05,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:05,368 INFO L85 PathProgramCache]: Analyzing trace with hash -345399677, now seen corresponding path program 7 times [2023-01-27 18:22:05,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:05,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350146806] [2023-01-27 18:22:05,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:05,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:06,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:06,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:06,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350146806] [2023-01-27 18:22:06,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350146806] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:06,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:06,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 18:22:06,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781656525] [2023-01-27 18:22:06,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:06,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 18:22:06,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:06,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 18:22:06,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-01-27 18:22:06,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 206 [2023-01-27 18:22:06,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 402 flow. Second operand has 9 states, 9 states have (on average 86.55555555555556) internal successors, (779), 9 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:06,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:06,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 206 [2023-01-27 18:22:06,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:06,529 INFO L130 PetriNetUnfolder]: 431/892 cut-off events. [2023-01-27 18:22:06,529 INFO L131 PetriNetUnfolder]: For 3518/3518 co-relation queries the response was YES. [2023-01-27 18:22:06,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4227 conditions, 892 events. 431/892 cut-off events. For 3518/3518 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4700 event pairs, 154 based on Foata normal form. 1/888 useless extension candidates. Maximal degree in co-relation 4199. Up to 484 conditions per place. [2023-01-27 18:22:06,539 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 52 selfloop transitions, 7 changer transitions 31/91 dead transitions. [2023-01-27 18:22:06,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 91 transitions, 870 flow [2023-01-27 18:22:06,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:22:06,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:22:06,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 643 transitions. [2023-01-27 18:22:06,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4459084604715673 [2023-01-27 18:22:06,542 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 643 transitions. [2023-01-27 18:22:06,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 643 transitions. [2023-01-27 18:22:06,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:06,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 643 transitions. [2023-01-27 18:22:06,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.85714285714286) internal successors, (643), 7 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:06,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:06,546 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:06,546 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 402 flow. Second operand 7 states and 643 transitions. [2023-01-27 18:22:06,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 91 transitions, 870 flow [2023-01-27 18:22:06,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 91 transitions, 829 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-01-27 18:22:06,550 INFO L231 Difference]: Finished difference. Result has 72 places, 52 transitions, 430 flow [2023-01-27 18:22:06,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=430, PETRI_PLACES=72, PETRI_TRANSITIONS=52} [2023-01-27 18:22:06,551 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-01-27 18:22:06,551 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 52 transitions, 430 flow [2023-01-27 18:22:06,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 86.55555555555556) internal successors, (779), 9 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:06,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:06,551 INFO L208 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] [2023-01-27 18:22:06,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 18:22:06,551 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:22:06,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:06,552 INFO L85 PathProgramCache]: Analyzing trace with hash -342773901, now seen corresponding path program 8 times [2023-01-27 18:22:06,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:06,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748539756] [2023-01-27 18:22:06,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:06,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:07,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:07,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748539756] [2023-01-27 18:22:07,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748539756] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:07,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:07,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 18:22:07,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051317339] [2023-01-27 18:22:07,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:07,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 18:22:07,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:07,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 18:22:07,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-01-27 18:22:07,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-01-27 18:22:07,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 52 transitions, 430 flow. Second operand has 10 states, 10 states have (on average 85.3) internal successors, (853), 10 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:07,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:07,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-01-27 18:22:07,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:07,876 INFO L130 PetriNetUnfolder]: 368/759 cut-off events. [2023-01-27 18:22:07,876 INFO L131 PetriNetUnfolder]: For 3198/3198 co-relation queries the response was YES. [2023-01-27 18:22:07,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3586 conditions, 759 events. 368/759 cut-off events. For 3198/3198 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3837 event pairs, 165 based on Foata normal form. 1/755 useless extension candidates. Maximal degree in co-relation 3561. Up to 418 conditions per place. [2023-01-27 18:22:07,880 INFO L137 encePairwiseOnDemand]: 201/206 looper letters, 35 selfloop transitions, 2 changer transitions 52/90 dead transitions. [2023-01-27 18:22:07,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 90 transitions, 845 flow [2023-01-27 18:22:07,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:22:07,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:22:07,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 551 transitions. [2023-01-27 18:22:07,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4457928802588997 [2023-01-27 18:22:07,882 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 551 transitions. [2023-01-27 18:22:07,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 551 transitions. [2023-01-27 18:22:07,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:07,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 551 transitions. [2023-01-27 18:22:07,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:07,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:07,894 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:07,894 INFO L175 Difference]: Start difference. First operand has 72 places, 52 transitions, 430 flow. Second operand 6 states and 551 transitions. [2023-01-27 18:22:07,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 90 transitions, 845 flow [2023-01-27 18:22:07,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 90 transitions, 829 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-01-27 18:22:07,898 INFO L231 Difference]: Finished difference. Result has 72 places, 38 transitions, 276 flow [2023-01-27 18:22:07,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=72, PETRI_TRANSITIONS=38} [2023-01-27 18:22:07,899 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-01-27 18:22:07,899 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 38 transitions, 276 flow [2023-01-27 18:22:07,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.3) internal successors, (853), 10 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:07,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:07,900 INFO L208 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] [2023-01-27 18:22:07,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-27 18:22:07,900 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 18:22:07,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:07,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1741772747, now seen corresponding path program 9 times [2023-01-27 18:22:07,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:07,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384511237] [2023-01-27 18:22:07,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:07,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:09,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:09,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:09,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384511237] [2023-01-27 18:22:09,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384511237] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:09,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:09,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 18:22:09,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244819055] [2023-01-27 18:22:09,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:09,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 18:22:09,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:09,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 18:22:09,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-01-27 18:22:09,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 206 [2023-01-27 18:22:09,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 38 transitions, 276 flow. Second operand has 9 states, 9 states have (on average 86.55555555555556) internal successors, (779), 9 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:09,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:09,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 206 [2023-01-27 18:22:09,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:09,739 INFO L130 PetriNetUnfolder]: 215/428 cut-off events. [2023-01-27 18:22:09,740 INFO L131 PetriNetUnfolder]: For 1959/1966 co-relation queries the response was YES. [2023-01-27 18:22:09,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 428 events. 215/428 cut-off events. For 1959/1966 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1807 event pairs, 31 based on Foata normal form. 5/430 useless extension candidates. Maximal degree in co-relation 2054. Up to 220 conditions per place. [2023-01-27 18:22:09,741 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2023-01-27 18:22:09,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 62 transitions, 592 flow [2023-01-27 18:22:09,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 18:22:09,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 18:22:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 712 transitions. [2023-01-27 18:22:09,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4320388349514563 [2023-01-27 18:22:09,743 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 712 transitions. [2023-01-27 18:22:09,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 712 transitions. [2023-01-27 18:22:09,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:09,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 712 transitions. [2023-01-27 18:22:09,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 89.0) internal successors, (712), 8 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:09,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:09,746 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:09,746 INFO L175 Difference]: Start difference. First operand has 72 places, 38 transitions, 276 flow. Second operand 8 states and 712 transitions. [2023-01-27 18:22:09,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 62 transitions, 592 flow [2023-01-27 18:22:09,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 552 flow, removed 14 selfloop flow, removed 10 redundant places. [2023-01-27 18:22:09,749 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2023-01-27 18:22:09,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2023-01-27 18:22:09,749 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2023-01-27 18:22:09,749 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2023-01-27 18:22:09,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 86.55555555555556) internal successors, (779), 9 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:09,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-27 18:22:09,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-01-27 18:22:09,752 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-01-27 18:22:09,752 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-01-27 18:22:09,752 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-01-27 18:22:09,752 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-01-27 18:22:09,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-27 18:22:09,752 INFO L445 BasicCegarLoop]: Path program histogram: [9, 2, 2, 1, 1, 1, 1, 1, 1] [2023-01-27 18:22:09,756 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 18:22:09,756 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 18:22:09,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 06:22:09 BasicIcfg [2023-01-27 18:22:09,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 18:22:09,758 INFO L158 Benchmark]: Toolchain (without parser) took 28063.91ms. Allocated memory was 562.0MB in the beginning and 1.4GB in the end (delta: 847.2MB). Free memory was 518.9MB in the beginning and 961.2MB in the end (delta: -442.2MB). Peak memory consumption was 405.7MB. Max. memory is 16.0GB. [2023-01-27 18:22:09,758 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 352.3MB. Free memory is still 300.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:22:09,759 INFO L158 Benchmark]: CACSL2BoogieTranslator took 508.75ms. Allocated memory is still 562.0MB. Free memory was 518.6MB in the beginning and 491.4MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-01-27 18:22:09,759 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.39ms. Allocated memory is still 562.0MB. Free memory was 491.4MB in the beginning and 487.8MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 18:22:09,759 INFO L158 Benchmark]: Boogie Preprocessor took 48.99ms. Allocated memory is still 562.0MB. Free memory was 487.8MB in the beginning and 485.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:22:09,759 INFO L158 Benchmark]: RCFGBuilder took 771.72ms. Allocated memory is still 562.0MB. Free memory was 485.4MB in the beginning and 481.4MB in the end (delta: 4.0MB). Peak memory consumption was 27.8MB. Max. memory is 16.0GB. [2023-01-27 18:22:09,759 INFO L158 Benchmark]: TraceAbstraction took 26653.78ms. Allocated memory was 562.0MB in the beginning and 1.4GB in the end (delta: 847.2MB). Free memory was 481.3MB in the beginning and 961.2MB in the end (delta: -479.9MB). Peak memory consumption was 367.4MB. Max. memory is 16.0GB. [2023-01-27 18:22:09,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 352.3MB. Free memory is still 300.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 508.75ms. Allocated memory is still 562.0MB. Free memory was 518.6MB in the beginning and 491.4MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 76.39ms. Allocated memory is still 562.0MB. Free memory was 491.4MB in the beginning and 487.8MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 48.99ms. Allocated memory is still 562.0MB. Free memory was 487.8MB in the beginning and 485.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 771.72ms. Allocated memory is still 562.0MB. Free memory was 485.4MB in the beginning and 481.4MB in the end (delta: 4.0MB). Peak memory consumption was 27.8MB. Max. memory is 16.0GB. * TraceAbstraction took 26653.78ms. Allocated memory was 562.0MB in the beginning and 1.4GB in the end (delta: 847.2MB). Free memory was 481.3MB in the beginning and 961.2MB in the end (delta: -479.9MB). Peak memory consumption was 367.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 117 PlacesBefore, 36 PlacesAfterwards, 109 TransitionsBefore, 26 TransitionsAfterwards, 2202 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 94 TotalNumberOfCompositions, 6197 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2315, independent: 2124, independent conditional: 0, independent unconditional: 2124, dependent: 191, dependent conditional: 0, dependent unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1176, independent: 1120, independent conditional: 0, independent unconditional: 1120, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2315, independent: 1004, independent conditional: 0, independent unconditional: 1004, dependent: 135, dependent conditional: 0, dependent unconditional: 135, unknown: 1176, unknown conditional: 0, unknown unconditional: 1176] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 142 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 26.6s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 687 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 687 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 328 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3242 IncrementalHoareTripleChecker+Invalid, 3570 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 328 mSolverCounterUnsat, 1 mSDtfsCounter, 3242 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=563occurred in iteration=9, InterpolantAutomatonStates: 118, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 14.4s InterpolantComputationTime, 353 NumberOfCodeBlocks, 353 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 334 ConstructedInterpolants, 0 QuantifiedInterpolants, 3438 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 18:22:09,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...