/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/goblint-regression/13-privatized_27-multiple-protecting2_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 19:02:34,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 19:02:34,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 19:02:34,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 19:02:34,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 19:02:34,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 19:02:34,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 19:02:34,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 19:02:34,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 19:02:34,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 19:02:34,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 19:02:34,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 19:02:34,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 19:02:34,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 19:02:34,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 19:02:34,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 19:02:34,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 19:02:34,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 19:02:34,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 19:02:34,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 19:02:34,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 19:02:34,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 19:02:34,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 19:02:34,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 19:02:34,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 19:02:34,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 19:02:34,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 19:02:34,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 19:02:34,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 19:02:34,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 19:02:34,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 19:02:34,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 19:02:34,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 19:02:34,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 19:02:34,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 19:02:34,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 19:02:34,465 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 19:02:34,491 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 19:02:34,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 19:02:34,492 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 19:02:34,492 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 19:02:34,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 19:02:34,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 19:02:34,493 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 19:02:34,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 19:02:34,493 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 19:02:34,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 19:02:34,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 19:02:34,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 19:02:34,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 19:02:34,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 19:02:34,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 19:02:34,495 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 19:02:34,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 19:02:34,495 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 19:02:34,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 19:02:34,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 19:02:34,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 19:02:34,495 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 19:02:34,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 19:02:34,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:02:34,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 19:02:34,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 19:02:34,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 19:02:34,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 19:02:34,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 19:02:34,497 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 19:02:34,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 19:02:34,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 19:02:34,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 19:02:34,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 19:02:34,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 19:02:34,746 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 19:02:34,748 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 19:02:34,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-01-27 19:02:35,899 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 19:02:36,101 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 19:02:36,102 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-01-27 19:02:36,114 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ab757e22/88f104ca37d24bc2b1e19d6b64b552da/FLAGc156d2f1c [2023-01-27 19:02:36,126 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ab757e22/88f104ca37d24bc2b1e19d6b64b552da [2023-01-27 19:02:36,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 19:02:36,130 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 19:02:36,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 19:02:36,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 19:02:36,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 19:02:36,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:02:36" (1/1) ... [2023-01-27 19:02:36,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49bbdce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:36, skipping insertion in model container [2023-01-27 19:02:36,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:02:36" (1/1) ... [2023-01-27 19:02:36,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 19:02:36,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 19:02:36,349 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2023-01-27 19:02:36,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:02:36,465 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 19:02:36,506 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2023-01-27 19:02:36,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:02:36,587 INFO L208 MainTranslator]: Completed translation [2023-01-27 19:02:36,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:36 WrapperNode [2023-01-27 19:02:36,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 19:02:36,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 19:02:36,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 19:02:36,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 19:02:36,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:36" (1/1) ... [2023-01-27 19:02:36,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:36" (1/1) ... [2023-01-27 19:02:36,652 INFO L138 Inliner]: procedures = 163, calls = 52, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 104 [2023-01-27 19:02:36,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 19:02:36,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 19:02:36,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 19:02:36,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 19:02:36,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:36" (1/1) ... [2023-01-27 19:02:36,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:36" (1/1) ... [2023-01-27 19:02:36,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:36" (1/1) ... [2023-01-27 19:02:36,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:36" (1/1) ... [2023-01-27 19:02:36,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:36" (1/1) ... [2023-01-27 19:02:36,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:36" (1/1) ... [2023-01-27 19:02:36,687 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:36" (1/1) ... [2023-01-27 19:02:36,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:36" (1/1) ... [2023-01-27 19:02:36,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 19:02:36,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 19:02:36,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 19:02:36,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 19:02:36,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:36" (1/1) ... [2023-01-27 19:02:36,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:02:36,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:02:36,729 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 19:02:36,751 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 19:02:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 19:02:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-01-27 19:02:36,765 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-01-27 19:02:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 19:02:36,766 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 19:02:36,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 19:02:36,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 19:02:36,766 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-27 19:02:36,766 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-27 19:02:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 19:02:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 19:02:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 19:02:36,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 19:02:36,769 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 19:02:36,900 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 19:02:36,902 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 19:02:37,138 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 19:02:37,146 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 19:02:37,146 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 19:02:37,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:02:37 BoogieIcfgContainer [2023-01-27 19:02:37,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 19:02:37,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 19:02:37,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 19:02:37,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 19:02:37,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 07:02:36" (1/3) ... [2023-01-27 19:02:37,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634988c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:02:37, skipping insertion in model container [2023-01-27 19:02:37,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:36" (2/3) ... [2023-01-27 19:02:37,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634988c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:02:37, skipping insertion in model container [2023-01-27 19:02:37,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:02:37" (3/3) ... [2023-01-27 19:02:37,155 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2023-01-27 19:02:37,175 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 19:02:37,175 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-01-27 19:02:37,175 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 19:02:37,277 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 19:02:37,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 147 transitions, 310 flow [2023-01-27 19:02:37,362 INFO L130 PetriNetUnfolder]: 4/145 cut-off events. [2023-01-27 19:02:37,362 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 19:02:37,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 145 events. 4/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 136 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2023-01-27 19:02:37,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 147 transitions, 310 flow [2023-01-27 19:02:37,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 127 transitions, 260 flow [2023-01-27 19:02:37,375 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 19:02:37,382 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 127 transitions, 260 flow [2023-01-27 19:02:37,384 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 127 transitions, 260 flow [2023-01-27 19:02:37,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 127 transitions, 260 flow [2023-01-27 19:02:37,428 INFO L130 PetriNetUnfolder]: 3/127 cut-off events. [2023-01-27 19:02:37,428 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:02:37,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 127 events. 3/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-01-27 19:02:37,432 INFO L119 LiptonReduction]: Number of co-enabled transitions 4248 [2023-01-27 19:02:40,990 INFO L134 LiptonReduction]: Checked pairs total: 10770 [2023-01-27 19:02:40,990 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-01-27 19:02:41,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 19:02:41,030 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;@15f31097, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 19:02:41,030 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-27 19:02:41,038 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-01-27 19:02:41,038 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:02:41,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:02:41,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:02:41,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-27 19:02:41,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:02:41,044 INFO L85 PathProgramCache]: Analyzing trace with hash 246070809, now seen corresponding path program 1 times [2023-01-27 19:02:41,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:02:41,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775245054] [2023-01-27 19:02:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:02:41,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:02:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:02:41,385 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 19:02:41,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:02:41,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775245054] [2023-01-27 19:02:41,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775245054] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:02:41,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:02:41,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 19:02:41,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897291892] [2023-01-27 19:02:41,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:02:41,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:02:41,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:02:41,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:02:41,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:02:41,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 250 [2023-01-27 19:02:41,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 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 19:02:41,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:02:41,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 250 [2023-01-27 19:02:41,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:02:41,702 INFO L130 PetriNetUnfolder]: 1275/2314 cut-off events. [2023-01-27 19:02:41,702 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-27 19:02:41,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4394 conditions, 2314 events. 1275/2314 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 13566 event pairs, 495 based on Foata normal form. 21/2224 useless extension candidates. Maximal degree in co-relation 4384. Up to 1328 conditions per place. [2023-01-27 19:02:41,718 INFO L137 encePairwiseOnDemand]: 244/250 looper letters, 51 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-01-27 19:02:41,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 231 flow [2023-01-27 19:02:41,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:02:41,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:02:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2023-01-27 19:02:41,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853333333333334 [2023-01-27 19:02:41,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2023-01-27 19:02:41,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2023-01-27 19:02:41,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:02:41,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2023-01-27 19:02:41,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 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 19:02:41,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 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 19:02:41,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 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 19:02:41,746 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 84 flow. Second operand 3 states and 439 transitions. [2023-01-27 19:02:41,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 231 flow [2023-01-27 19:02:41,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 19:02:41,750 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 90 flow [2023-01-27 19:02:41,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2023-01-27 19:02:41,755 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2023-01-27 19:02:41,755 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 90 flow [2023-01-27 19:02:41,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 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 19:02:41,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:02:41,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:02:41,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 19:02:41,756 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-27 19:02:41,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:02:41,757 INFO L85 PathProgramCache]: Analyzing trace with hash 389176039, now seen corresponding path program 1 times [2023-01-27 19:02:41,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:02:41,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354037502] [2023-01-27 19:02:41,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:02:41,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:02:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:02:41,880 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 19:02:41,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:02:41,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354037502] [2023-01-27 19:02:41,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354037502] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:02:41,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:02:41,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:02:41,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019150707] [2023-01-27 19:02:41,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:02:41,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:02:41,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:02:41,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:02:41,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:02:41,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 250 [2023-01-27 19:02:41,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 90 flow. Second operand has 4 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 19:02:41,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:02:41,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 250 [2023-01-27 19:02:41,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:02:42,110 INFO L130 PetriNetUnfolder]: 731/1427 cut-off events. [2023-01-27 19:02:42,111 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-01-27 19:02:42,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3056 conditions, 1427 events. 731/1427 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7300 event pairs, 224 based on Foata normal form. 171/1571 useless extension candidates. Maximal degree in co-relation 3045. Up to 1145 conditions per place. [2023-01-27 19:02:42,118 INFO L137 encePairwiseOnDemand]: 244/250 looper letters, 64 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2023-01-27 19:02:42,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 70 transitions, 307 flow [2023-01-27 19:02:42,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 19:02:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 19:02:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 468 transitions. [2023-01-27 19:02:42,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468 [2023-01-27 19:02:42,123 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 468 transitions. [2023-01-27 19:02:42,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 468 transitions. [2023-01-27 19:02:42,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:02:42,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 468 transitions. [2023-01-27 19:02:42,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 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 19:02:42,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 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 19:02:42,129 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 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 19:02:42,129 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 90 flow. Second operand 4 states and 468 transitions. [2023-01-27 19:02:42,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 70 transitions, 307 flow [2023-01-27 19:02:42,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 301 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 19:02:42,133 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 115 flow [2023-01-27 19:02:42,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-01-27 19:02:42,134 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-01-27 19:02:42,134 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 115 flow [2023-01-27 19:02:42,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 19:02:42,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:02:42,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:02:42,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 19:02:42,136 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-27 19:02:42,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:02:42,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1307143034, now seen corresponding path program 1 times [2023-01-27 19:02:42,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:02:42,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347015619] [2023-01-27 19:02:42,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:02:42,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:02:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:02:42,276 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 19:02:42,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:02:42,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347015619] [2023-01-27 19:02:42,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347015619] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:02:42,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:02:42,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 19:02:42,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886601714] [2023-01-27 19:02:42,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:02:42,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:02:42,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:02:42,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:02:42,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:02:42,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 250 [2023-01-27 19:02:42,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 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 19:02:42,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:02:42,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 250 [2023-01-27 19:02:42,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:02:42,402 INFO L130 PetriNetUnfolder]: 460/1048 cut-off events. [2023-01-27 19:02:42,402 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2023-01-27 19:02:42,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 1048 events. 460/1048 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5814 event pairs, 144 based on Foata normal form. 0/1032 useless extension candidates. Maximal degree in co-relation 2337. Up to 629 conditions per place. [2023-01-27 19:02:42,407 INFO L137 encePairwiseOnDemand]: 247/250 looper letters, 53 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-01-27 19:02:42,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 283 flow [2023-01-27 19:02:42,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:02:42,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:02:42,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-01-27 19:02:42,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.588 [2023-01-27 19:02:42,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-01-27 19:02:42,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-01-27 19:02:42,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:02:42,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-01-27 19:02:42,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 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 19:02:42,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 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 19:02:42,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 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 19:02:42,414 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 115 flow. Second operand 3 states and 441 transitions. [2023-01-27 19:02:42,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 283 flow [2023-01-27 19:02:42,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 19:02:42,416 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 122 flow [2023-01-27 19:02:42,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-01-27 19:02:42,417 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2023-01-27 19:02:42,417 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 122 flow [2023-01-27 19:02:42,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 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 19:02:42,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:02:42,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:02:42,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 19:02:42,418 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-27 19:02:42,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:02:42,418 INFO L85 PathProgramCache]: Analyzing trace with hash -561844962, now seen corresponding path program 1 times [2023-01-27 19:02:42,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:02:42,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701053974] [2023-01-27 19:02:42,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:02:42,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:02:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:02:42,541 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 19:02:42,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:02:42,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701053974] [2023-01-27 19:02:42,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701053974] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:02:42,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:02:42,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 19:02:42,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230751761] [2023-01-27 19:02:42,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:02:42,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:02:42,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:02:42,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:02:42,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:02:42,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 250 [2023-01-27 19:02:42,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 130.25) internal successors, (521), 4 states have internal predecessors, (521), 0 states have call successors, (0), 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 19:02:42,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:02:42,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 250 [2023-01-27 19:02:42,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:02:42,710 INFO L130 PetriNetUnfolder]: 424/969 cut-off events. [2023-01-27 19:02:42,711 INFO L131 PetriNetUnfolder]: For 255/255 co-relation queries the response was YES. [2023-01-27 19:02:42,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295 conditions, 969 events. 424/969 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5287 event pairs, 325 based on Foata normal form. 33/997 useless extension candidates. Maximal degree in co-relation 2281. Up to 668 conditions per place. [2023-01-27 19:02:42,715 INFO L137 encePairwiseOnDemand]: 244/250 looper letters, 52 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2023-01-27 19:02:42,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 61 transitions, 287 flow [2023-01-27 19:02:42,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 19:02:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 19:02:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 564 transitions. [2023-01-27 19:02:42,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564 [2023-01-27 19:02:42,717 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 564 transitions. [2023-01-27 19:02:42,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 564 transitions. [2023-01-27 19:02:42,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:02:42,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 564 transitions. [2023-01-27 19:02:42,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 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 19:02:42,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 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 19:02:42,722 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 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 19:02:42,722 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 122 flow. Second operand 4 states and 564 transitions. [2023-01-27 19:02:42,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 61 transitions, 287 flow [2023-01-27 19:02:42,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 61 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 19:02:42,724 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 133 flow [2023-01-27 19:02:42,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-01-27 19:02:42,725 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 6 predicate places. [2023-01-27 19:02:42,725 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 133 flow [2023-01-27 19:02:42,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.25) internal successors, (521), 4 states have internal predecessors, (521), 0 states have call successors, (0), 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 19:02:42,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:02:42,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:02:42,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 19:02:42,726 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-27 19:02:42,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:02:42,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1224570049, now seen corresponding path program 1 times [2023-01-27 19:02:42,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:02:42,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803531871] [2023-01-27 19:02:42,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:02:42,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:02:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:02:42,783 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 19:02:42,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:02:42,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803531871] [2023-01-27 19:02:42,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803531871] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:02:42,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:02:42,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:02:42,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013042690] [2023-01-27 19:02:42,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:02:42,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:02:42,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:02:42,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:02:42,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:02:42,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 250 [2023-01-27 19:02:42,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 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 19:02:42,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:02:42,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 250 [2023-01-27 19:02:42,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:02:42,946 INFO L130 PetriNetUnfolder]: 517/1264 cut-off events. [2023-01-27 19:02:42,946 INFO L131 PetriNetUnfolder]: For 407/407 co-relation queries the response was YES. [2023-01-27 19:02:42,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3301 conditions, 1264 events. 517/1264 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7393 event pairs, 238 based on Foata normal form. 219/1483 useless extension candidates. Maximal degree in co-relation 3286. Up to 660 conditions per place. [2023-01-27 19:02:42,951 INFO L137 encePairwiseOnDemand]: 232/250 looper letters, 49 selfloop transitions, 19 changer transitions 1/69 dead transitions. [2023-01-27 19:02:42,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 69 transitions, 372 flow [2023-01-27 19:02:42,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:02:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:02:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2023-01-27 19:02:42,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516 [2023-01-27 19:02:42,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2023-01-27 19:02:42,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2023-01-27 19:02:42,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:02:42,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2023-01-27 19:02:42,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 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 19:02:42,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 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 19:02:42,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 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 19:02:42,957 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 133 flow. Second operand 3 states and 387 transitions. [2023-01-27 19:02:42,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 69 transitions, 372 flow [2023-01-27 19:02:42,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 347 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-27 19:02:42,960 INFO L231 Difference]: Finished difference. Result has 50 places, 51 transitions, 233 flow [2023-01-27 19:02:42,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2023-01-27 19:02:42,961 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2023-01-27 19:02:42,961 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 233 flow [2023-01-27 19:02:42,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 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 19:02:42,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:02:42,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:02:42,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 19:02:42,962 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-27 19:02:42,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:02:42,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1004454965, now seen corresponding path program 1 times [2023-01-27 19:02:42,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:02:42,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450730474] [2023-01-27 19:02:42,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:02:42,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:02:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:02:43,139 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 19:02:43,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:02:43,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450730474] [2023-01-27 19:02:43,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450730474] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:02:43,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:02:43,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 19:02:43,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709729444] [2023-01-27 19:02:43,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:02:43,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 19:02:43,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:02:43,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 19:02:43,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-27 19:02:43,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 250 [2023-01-27 19:02:43,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 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 19:02:43,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:02:43,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 250 [2023-01-27 19:02:43,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:02:43,253 INFO L130 PetriNetUnfolder]: 221/625 cut-off events. [2023-01-27 19:02:43,253 INFO L131 PetriNetUnfolder]: For 369/369 co-relation queries the response was YES. [2023-01-27 19:02:43,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2020 conditions, 625 events. 221/625 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3115 event pairs, 46 based on Foata normal form. 55/680 useless extension candidates. Maximal degree in co-relation 2006. Up to 587 conditions per place. [2023-01-27 19:02:43,256 INFO L137 encePairwiseOnDemand]: 246/250 looper letters, 45 selfloop transitions, 6 changer transitions 9/60 dead transitions. [2023-01-27 19:02:43,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 388 flow [2023-01-27 19:02:43,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 19:02:43,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 19:02:43,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 418 transitions. [2023-01-27 19:02:43,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418 [2023-01-27 19:02:43,258 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 418 transitions. [2023-01-27 19:02:43,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 418 transitions. [2023-01-27 19:02:43,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:02:43,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 418 transitions. [2023-01-27 19:02:43,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 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 19:02:43,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 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 19:02:43,262 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 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 19:02:43,262 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 233 flow. Second operand 4 states and 418 transitions. [2023-01-27 19:02:43,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 388 flow [2023-01-27 19:02:43,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 19:02:43,265 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 173 flow [2023-01-27 19:02:43,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-01-27 19:02:43,266 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2023-01-27 19:02:43,266 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 173 flow [2023-01-27 19:02:43,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 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 19:02:43,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:02:43,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:02:43,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 19:02:43,267 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-27 19:02:43,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:02:43,267 INFO L85 PathProgramCache]: Analyzing trace with hash -133129303, now seen corresponding path program 1 times [2023-01-27 19:02:43,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:02:43,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211656396] [2023-01-27 19:02:43,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:02:43,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:02:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:02:43,481 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 19:02:43,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:02:43,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211656396] [2023-01-27 19:02:43,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211656396] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:02:43,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:02:43,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 19:02:43,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965370038] [2023-01-27 19:02:43,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:02:43,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 19:02:43,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:02:43,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 19:02:43,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-01-27 19:02:43,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 250 [2023-01-27 19:02:43,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 173 flow. Second operand has 6 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 19:02:43,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:02:43,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 250 [2023-01-27 19:02:43,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:02:43,580 INFO L130 PetriNetUnfolder]: 98/319 cut-off events. [2023-01-27 19:02:43,580 INFO L131 PetriNetUnfolder]: For 217/217 co-relation queries the response was YES. [2023-01-27 19:02:43,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 319 events. 98/319 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1410 event pairs, 35 based on Foata normal form. 28/347 useless extension candidates. Maximal degree in co-relation 974. Up to 211 conditions per place. [2023-01-27 19:02:43,582 INFO L137 encePairwiseOnDemand]: 246/250 looper letters, 46 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2023-01-27 19:02:43,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 330 flow [2023-01-27 19:02:43,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 19:02:43,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 19:02:43,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 416 transitions. [2023-01-27 19:02:43,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.416 [2023-01-27 19:02:43,584 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 416 transitions. [2023-01-27 19:02:43,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 416 transitions. [2023-01-27 19:02:43,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:02:43,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 416 transitions. [2023-01-27 19:02:43,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 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 19:02:43,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 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 19:02:43,587 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 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 19:02:43,587 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 173 flow. Second operand 4 states and 416 transitions. [2023-01-27 19:02:43,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 330 flow [2023-01-27 19:02:43,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 311 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 19:02:43,589 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 168 flow [2023-01-27 19:02:43,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-01-27 19:02:43,590 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -1 predicate places. [2023-01-27 19:02:43,590 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 168 flow [2023-01-27 19:02:43,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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 19:02:43,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:02:43,591 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] [2023-01-27 19:02:43,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 19:02:43,591 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-27 19:02:43,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:02:43,591 INFO L85 PathProgramCache]: Analyzing trace with hash -238774002, now seen corresponding path program 1 times [2023-01-27 19:02:43,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:02:43,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115150881] [2023-01-27 19:02:43,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:02:43,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:02:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:02:43,695 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 19:02:43,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:02:43,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115150881] [2023-01-27 19:02:43,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115150881] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:02:43,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:02:43,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 19:02:43,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523380789] [2023-01-27 19:02:43,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:02:43,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:02:43,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:02:43,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:02:43,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:02:43,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 250 [2023-01-27 19:02:43,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 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 19:02:43,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:02:43,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 250 [2023-01-27 19:02:43,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:02:43,757 INFO L130 PetriNetUnfolder]: 84/299 cut-off events. [2023-01-27 19:02:43,757 INFO L131 PetriNetUnfolder]: For 172/174 co-relation queries the response was YES. [2023-01-27 19:02:43,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 299 events. 84/299 cut-off events. For 172/174 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1325 event pairs, 49 based on Foata normal form. 4/301 useless extension candidates. Maximal degree in co-relation 854. Up to 203 conditions per place. [2023-01-27 19:02:43,758 INFO L137 encePairwiseOnDemand]: 246/250 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2023-01-27 19:02:43,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 50 transitions, 298 flow [2023-01-27 19:02:43,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 19:02:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 19:02:43,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 552 transitions. [2023-01-27 19:02:43,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552 [2023-01-27 19:02:43,760 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 552 transitions. [2023-01-27 19:02:43,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 552 transitions. [2023-01-27 19:02:43,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:02:43,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 552 transitions. [2023-01-27 19:02:43,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 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 19:02:43,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 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 19:02:43,764 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 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 19:02:43,764 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 168 flow. Second operand 4 states and 552 transitions. [2023-01-27 19:02:43,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 50 transitions, 298 flow [2023-01-27 19:02:43,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 290 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 19:02:43,765 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-01-27 19:02:43,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-01-27 19:02:43,766 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2023-01-27 19:02:43,766 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-01-27 19:02:43,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 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 19:02:43,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-27 19:02:43,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-01-27 19:02:43,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-01-27 19:02:43,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-01-27 19:02:43,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-01-27 19:02:43,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-01-27 19:02:43,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 19:02:43,770 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:02:43,772 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 19:02:43,772 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 19:02:43,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 07:02:43 BasicIcfg [2023-01-27 19:02:43,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 19:02:43,775 INFO L158 Benchmark]: Toolchain (without parser) took 7645.82ms. Allocated memory was 354.4MB in the beginning and 425.7MB in the end (delta: 71.3MB). Free memory was 299.3MB in the beginning and 292.1MB in the end (delta: 7.2MB). Peak memory consumption was 80.6MB. Max. memory is 16.0GB. [2023-01-27 19:02:43,776 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 255.9MB. Free memory is still 213.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 19:02:43,776 INFO L158 Benchmark]: CACSL2BoogieTranslator took 458.16ms. Allocated memory is still 354.4MB. Free memory was 299.1MB in the beginning and 324.7MB in the end (delta: -25.6MB). Peak memory consumption was 19.0MB. Max. memory is 16.0GB. [2023-01-27 19:02:43,776 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.42ms. Allocated memory is still 354.4MB. Free memory was 324.7MB in the beginning and 322.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:02:43,777 INFO L158 Benchmark]: Boogie Preprocessor took 37.19ms. Allocated memory is still 354.4MB. Free memory was 322.7MB in the beginning and 321.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:02:43,777 INFO L158 Benchmark]: RCFGBuilder took 457.08ms. Allocated memory is still 354.4MB. Free memory was 320.6MB in the beginning and 303.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-01-27 19:02:43,777 INFO L158 Benchmark]: TraceAbstraction took 6624.85ms. Allocated memory was 354.4MB in the beginning and 425.7MB in the end (delta: 71.3MB). Free memory was 302.8MB in the beginning and 292.1MB in the end (delta: 10.8MB). Peak memory consumption was 80.5MB. Max. memory is 16.0GB. [2023-01-27 19:02:43,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 255.9MB. Free memory is still 213.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 458.16ms. Allocated memory is still 354.4MB. Free memory was 299.1MB in the beginning and 324.7MB in the end (delta: -25.6MB). Peak memory consumption was 19.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 63.42ms. Allocated memory is still 354.4MB. Free memory was 324.7MB in the beginning and 322.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 37.19ms. Allocated memory is still 354.4MB. Free memory was 322.7MB in the beginning and 321.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 457.08ms. Allocated memory is still 354.4MB. Free memory was 320.6MB in the beginning and 303.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 6624.85ms. Allocated memory was 354.4MB in the beginning and 425.7MB in the end (delta: 71.3MB). Free memory was 302.8MB in the beginning and 292.1MB in the end (delta: 10.8MB). Peak memory consumption was 80.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 131 PlacesBefore, 45 PlacesAfterwards, 127 TransitionsBefore, 39 TransitionsAfterwards, 4248 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 103 TotalNumberOfCompositions, 10770 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3440, independent: 3105, independent conditional: 0, independent unconditional: 3105, dependent: 335, dependent conditional: 0, dependent unconditional: 335, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2056, independent: 2001, independent conditional: 0, independent unconditional: 2001, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3440, independent: 1104, independent conditional: 0, independent unconditional: 1104, dependent: 280, dependent conditional: 0, dependent unconditional: 280, unknown: 2056, unknown conditional: 0, unknown unconditional: 2056] , Statistics on independence cache: Total cache size (in pairs): 124, Positive cache size: 92, Positive conditional cache size: 0, Positive unconditional cache size: 92, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 5 procedures, 184 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: 6.5s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 202 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 202 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 618 IncrementalHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 1 mSDtfsCounter, 618 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=233occurred in iteration=5, InterpolantAutomatonStates: 29, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 632 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 19:02:43,799 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...