/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/ldv-races/race-2_1-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:22:11,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:22:11,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:22:11,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 18:22:11,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 18:22:11,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 18:22:11,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 18:22:11,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 18:22:11,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 18:22:11,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 18:22:11,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 18:22:11,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 18:22:11,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:22:11,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:22:11,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:22:11,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:22:11,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:22:11,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:22:11,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:22:11,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:22:11,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:22:11,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:22:11,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:22:11,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:22:11,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 18:22:11,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 18:22:11,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 18:22:11,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 18:22:11,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 18:22:11,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 18:22:11,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 18:22:11,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 18:22:11,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 18:22:11,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 18:22:11,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 18:22:11,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 18:22:11,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 18:22:11,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 18:22:11,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:22:11,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:22:11,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:22:11,703 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 18:22:11,722 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:22:11,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:22:11,722 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:22:11,723 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:22:11,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:22:11,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:22:11,723 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:22:11,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:22:11,724 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:22:11,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:22:11,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:22:11,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:22:11,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:22:11,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:22:11,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:22:11,727 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:22:11,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:22:11,728 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:22:11,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:22:11,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:22:11,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:22:11,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:22:11,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:22:11,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:22:11,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:22:11,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:22:11,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:22:11,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:22:11,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:22:11,730 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:22:11,730 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:22:11,730 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:22:11,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:22:11,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:22:11,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:22:11,982 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:22:11,984 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:22:11,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-01-27 18:22:13,032 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:22:13,336 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:22:13,336 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-01-27 18:22:13,356 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64cb89111/c514d8c40f614929a5a98afff4948b53/FLAG7a716b6c3 [2023-01-27 18:22:13,372 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64cb89111/c514d8c40f614929a5a98afff4948b53 [2023-01-27 18:22:13,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:22:13,376 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:22:13,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:22:13,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:22:13,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:22:13,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:22:13" (1/1) ... [2023-01-27 18:22:13,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d5599a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:13, skipping insertion in model container [2023-01-27 18:22:13,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:22:13" (1/1) ... [2023-01-27 18:22:13,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:22:13,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:22:13,936 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-01-27 18:22:13,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:22:13,981 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:22:14,045 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-01-27 18:22:14,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:22:14,148 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:22:14,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:14 WrapperNode [2023-01-27 18:22:14,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:22:14,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:22:14,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:22:14,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:22:14,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:14" (1/1) ... [2023-01-27 18:22:14,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:14" (1/1) ... [2023-01-27 18:22:14,215 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2023-01-27 18:22:14,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:22:14,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:22:14,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:22:14,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:22:14,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:14" (1/1) ... [2023-01-27 18:22:14,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:14" (1/1) ... [2023-01-27 18:22:14,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:14" (1/1) ... [2023-01-27 18:22:14,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:14" (1/1) ... [2023-01-27 18:22:14,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:14" (1/1) ... [2023-01-27 18:22:14,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:14" (1/1) ... [2023-01-27 18:22:14,248 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:14" (1/1) ... [2023-01-27 18:22:14,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:14" (1/1) ... [2023-01-27 18:22:14,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:22:14,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:22:14,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:22:14,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:22:14,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:14" (1/1) ... [2023-01-27 18:22:14,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:22:14,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:22:14,295 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 18:22:14,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 18:22:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:22:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 18:22:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 18:22:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:22:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-27 18:22:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:22:14,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:22:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-01-27 18:22:14,337 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-01-27 18:22:14,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:22:14,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:22:14,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:22:14,340 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 18:22:14,644 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:22:14,646 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:22:14,827 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:22:14,834 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:22:14,834 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 18:22:14,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:22:14 BoogieIcfgContainer [2023-01-27 18:22:14,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:22:14,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:22:14,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:22:14,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:22:14,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:22:13" (1/3) ... [2023-01-27 18:22:14,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a74da05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:22:14, skipping insertion in model container [2023-01-27 18:22:14,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:14" (2/3) ... [2023-01-27 18:22:14,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a74da05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:22:14, skipping insertion in model container [2023-01-27 18:22:14,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:22:14" (3/3) ... [2023-01-27 18:22:14,843 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2023-01-27 18:22:14,857 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:22:14,857 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-01-27 18:22:14,858 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:22:14,916 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 18:22:14,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 175 transitions, 366 flow [2023-01-27 18:22:15,019 INFO L130 PetriNetUnfolder]: 10/213 cut-off events. [2023-01-27 18:22:15,019 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 18:22:15,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 213 events. 10/213 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 373 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 125. Up to 4 conditions per place. [2023-01-27 18:22:15,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 175 transitions, 366 flow [2023-01-27 18:22:15,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 163 transitions, 338 flow [2023-01-27 18:22:15,037 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:22:15,047 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 163 transitions, 338 flow [2023-01-27 18:22:15,049 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 163 transitions, 338 flow [2023-01-27 18:22:15,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 163 transitions, 338 flow [2023-01-27 18:22:15,115 INFO L130 PetriNetUnfolder]: 7/194 cut-off events. [2023-01-27 18:22:15,115 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 18:22:15,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 194 events. 7/194 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 312 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2023-01-27 18:22:15,121 INFO L119 LiptonReduction]: Number of co-enabled transitions 2604 [2023-01-27 18:22:24,873 INFO L134 LiptonReduction]: Checked pairs total: 5770 [2023-01-27 18:22:24,873 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-01-27 18:22:24,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 18:22:24,895 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;@32f778ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 18:22:24,896 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-01-27 18:22:24,897 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-01-27 18:22:24,897 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:22:24,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:24,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-01-27 18:22:24,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:24,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:24,902 INFO L85 PathProgramCache]: Analyzing trace with hash 610, now seen corresponding path program 1 times [2023-01-27 18:22:24,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:24,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104138246] [2023-01-27 18:22:24,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:24,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:25,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:25,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:25,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104138246] [2023-01-27 18:22:25,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104138246] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:25,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:25,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-01-27 18:22:25,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038246441] [2023-01-27 18:22:25,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:25,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-27 18:22:25,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:25,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-27 18:22:25,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-27 18:22:25,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 352 [2023-01-27 18:22:25,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 159.5) internal successors, (319), 2 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:25,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:25,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 352 [2023-01-27 18:22:25,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:25,328 INFO L130 PetriNetUnfolder]: 217/420 cut-off events. [2023-01-27 18:22:25,328 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-01-27 18:22:25,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 420 events. 217/420 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2009 event pairs, 216 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 739. Up to 391 conditions per place. [2023-01-27 18:22:25,336 INFO L137 encePairwiseOnDemand]: 349/352 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-01-27 18:22:25,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2023-01-27 18:22:25,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-27 18:22:25,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-27 18:22:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 346 transitions. [2023-01-27 18:22:25,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914772727272727 [2023-01-27 18:22:25,356 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 346 transitions. [2023-01-27 18:22:25,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 346 transitions. [2023-01-27 18:22:25,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:25,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 346 transitions. [2023-01-27 18:22:25,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 173.0) internal successors, (346), 2 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:25,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:25,371 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:25,373 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 2 states and 346 transitions. [2023-01-27 18:22:25,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2023-01-27 18:22:25,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 18:22:25,378 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2023-01-27 18:22:25,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2023-01-27 18:22:25,383 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-01-27 18:22:25,384 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2023-01-27 18:22:25,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 159.5) internal successors, (319), 2 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:25,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:25,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-01-27 18:22:25,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 18:22:25,385 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:25,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:25,387 INFO L85 PathProgramCache]: Analyzing trace with hash 18718605, now seen corresponding path program 1 times [2023-01-27 18:22:25,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:25,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806047072] [2023-01-27 18:22:25,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:25,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:25,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:25,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806047072] [2023-01-27 18:22:25,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806047072] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:25,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:25,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:22:25,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886037402] [2023-01-27 18:22:25,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:25,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:22:25,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:25,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:22:25,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:22:25,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 352 [2023-01-27 18:22:25,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:25,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:25,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 352 [2023-01-27 18:22:25,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:26,001 INFO L130 PetriNetUnfolder]: 639/1091 cut-off events. [2023-01-27 18:22:26,002 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 18:22:26,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2192 conditions, 1091 events. 639/1091 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5167 event pairs, 306 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 2189. Up to 767 conditions per place. [2023-01-27 18:22:26,008 INFO L137 encePairwiseOnDemand]: 344/352 looper letters, 35 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2023-01-27 18:22:26,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 172 flow [2023-01-27 18:22:26,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:22:26,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:22:26,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-01-27 18:22:26,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2023-01-27 18:22:26,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-01-27 18:22:26,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-01-27 18:22:26,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:26,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-01-27 18:22:26,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:26,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:26,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:26,017 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 424 transitions. [2023-01-27 18:22:26,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 172 flow [2023-01-27 18:22:26,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 18:22:26,020 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 112 flow [2023-01-27 18:22:26,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-01-27 18:22:26,021 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-01-27 18:22:26,021 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 112 flow [2023-01-27 18:22:26,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:26,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:26,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-27 18:22:26,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 18:22:26,022 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:26,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:26,025 INFO L85 PathProgramCache]: Analyzing trace with hash 580276061, now seen corresponding path program 1 times [2023-01-27 18:22:26,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:26,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79938123] [2023-01-27 18:22:26,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:26,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:26,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:26,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79938123] [2023-01-27 18:22:26,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79938123] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:26,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:26,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:22:26,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372123884] [2023-01-27 18:22:26,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:26,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:22:26,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:26,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:22:26,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:22:26,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 352 [2023-01-27 18:22:26,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:26,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:26,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 352 [2023-01-27 18:22:26,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:26,460 INFO L130 PetriNetUnfolder]: 755/1298 cut-off events. [2023-01-27 18:22:26,460 INFO L131 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2023-01-27 18:22:26,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3359 conditions, 1298 events. 755/1298 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6462 event pairs, 422 based on Foata normal form. 37/1333 useless extension candidates. Maximal degree in co-relation 3354. Up to 992 conditions per place. [2023-01-27 18:22:26,468 INFO L137 encePairwiseOnDemand]: 345/352 looper letters, 39 selfloop transitions, 9 changer transitions 2/50 dead transitions. [2023-01-27 18:22:26,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 50 transitions, 274 flow [2023-01-27 18:22:26,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:22:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:22:26,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-01-27 18:22:26,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2023-01-27 18:22:26,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-01-27 18:22:26,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-01-27 18:22:26,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:26,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-01-27 18:22:26,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:26,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:26,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:26,475 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 112 flow. Second operand 3 states and 423 transitions. [2023-01-27 18:22:26,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 50 transitions, 274 flow [2023-01-27 18:22:26,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:22:26,483 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 169 flow [2023-01-27 18:22:26,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=36, PETRI_TRANSITIONS=40} [2023-01-27 18:22:26,484 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-01-27 18:22:26,487 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 169 flow [2023-01-27 18:22:26,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:26,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:26,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:22:26,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 18:22:26,488 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:26,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:26,488 INFO L85 PathProgramCache]: Analyzing trace with hash -316833676, now seen corresponding path program 1 times [2023-01-27 18:22:26,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:26,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5227050] [2023-01-27 18:22:26,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:26,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:26,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:26,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5227050] [2023-01-27 18:22:26,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5227050] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:26,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:26,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:22:26,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929045595] [2023-01-27 18:22:26,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:26,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:22:26,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:26,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:22:26,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:22:26,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 352 [2023-01-27 18:22:26,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:26,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:26,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 352 [2023-01-27 18:22:26,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:26,648 INFO L130 PetriNetUnfolder]: 105/208 cut-off events. [2023-01-27 18:22:26,648 INFO L131 PetriNetUnfolder]: For 175/214 co-relation queries the response was YES. [2023-01-27 18:22:26,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 208 events. 105/208 cut-off events. For 175/214 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 789 event pairs, 23 based on Foata normal form. 23/221 useless extension candidates. Maximal degree in co-relation 539. Up to 149 conditions per place. [2023-01-27 18:22:26,649 INFO L137 encePairwiseOnDemand]: 350/352 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-01-27 18:22:26,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 142 flow [2023-01-27 18:22:26,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:22:26,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:22:26,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2023-01-27 18:22:26,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2023-01-27 18:22:26,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2023-01-27 18:22:26,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2023-01-27 18:22:26,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:26,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2023-01-27 18:22:26,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:26,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:26,656 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:26,656 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 169 flow. Second operand 3 states and 489 transitions. [2023-01-27 18:22:26,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 142 flow [2023-01-27 18:22:26,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 128 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-01-27 18:22:26,664 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 58 flow [2023-01-27 18:22:26,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-01-27 18:22:26,665 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-01-27 18:22:26,665 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 58 flow [2023-01-27 18:22:26,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:26,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:26,666 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] [2023-01-27 18:22:26,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 18:22:26,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:26,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:26,666 INFO L85 PathProgramCache]: Analyzing trace with hash -162568070, now seen corresponding path program 1 times [2023-01-27 18:22:26,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:26,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902923745] [2023-01-27 18:22:26,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:26,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:27,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:27,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902923745] [2023-01-27 18:22:27,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902923745] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:27,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:27,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 18:22:27,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924023513] [2023-01-27 18:22:27,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:27,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:22:27,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:27,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:22:27,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:22:27,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 352 [2023-01-27 18:22:27,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:27,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:27,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 352 [2023-01-27 18:22:27,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:27,580 INFO L130 PetriNetUnfolder]: 156/307 cut-off events. [2023-01-27 18:22:27,580 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-01-27 18:22:27,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 307 events. 156/307 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1212 event pairs, 52 based on Foata normal form. 12/318 useless extension candidates. Maximal degree in co-relation 741. Up to 148 conditions per place. [2023-01-27 18:22:27,582 INFO L137 encePairwiseOnDemand]: 346/352 looper letters, 33 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2023-01-27 18:22:27,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 189 flow [2023-01-27 18:22:27,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:22:27,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:22:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 765 transitions. [2023-01-27 18:22:27,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2023-01-27 18:22:27,585 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 765 transitions. [2023-01-27 18:22:27,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 765 transitions. [2023-01-27 18:22:27,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:27,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 765 transitions. [2023-01-27 18:22:27,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:27,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:27,593 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:27,593 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 58 flow. Second operand 5 states and 765 transitions. [2023-01-27 18:22:27,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 189 flow [2023-01-27 18:22:27,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 40 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 18:22:27,596 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 92 flow [2023-01-27 18:22:27,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-01-27 18:22:27,598 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-01-27 18:22:27,598 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 92 flow [2023-01-27 18:22:27,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:27,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:27,599 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] [2023-01-27 18:22:27,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 18:22:27,599 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:27,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:27,600 INFO L85 PathProgramCache]: Analyzing trace with hash 165079926, now seen corresponding path program 2 times [2023-01-27 18:22:27,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:27,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218072480] [2023-01-27 18:22:27,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:27,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:28,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:28,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218072480] [2023-01-27 18:22:28,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218072480] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:28,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:28,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 18:22:28,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649994795] [2023-01-27 18:22:28,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:28,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:22:28,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:28,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:22:28,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:22:28,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 352 [2023-01-27 18:22:28,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 148.8) internal successors, (744), 5 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:28,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:28,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 352 [2023-01-27 18:22:28,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:28,254 INFO L130 PetriNetUnfolder]: 134/290 cut-off events. [2023-01-27 18:22:28,255 INFO L131 PetriNetUnfolder]: For 136/144 co-relation queries the response was YES. [2023-01-27 18:22:28,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 290 events. 134/290 cut-off events. For 136/144 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1248 event pairs, 39 based on Foata normal form. 12/289 useless extension candidates. Maximal degree in co-relation 788. Up to 138 conditions per place. [2023-01-27 18:22:28,256 INFO L137 encePairwiseOnDemand]: 346/352 looper letters, 31 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2023-01-27 18:22:28,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 217 flow [2023-01-27 18:22:28,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:22:28,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:22:28,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 760 transitions. [2023-01-27 18:22:28,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2023-01-27 18:22:28,259 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 760 transitions. [2023-01-27 18:22:28,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 760 transitions. [2023-01-27 18:22:28,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:28,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 760 transitions. [2023-01-27 18:22:28,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:28,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:28,264 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:28,264 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 92 flow. Second operand 5 states and 760 transitions. [2023-01-27 18:22:28,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 217 flow [2023-01-27 18:22:28,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 40 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 18:22:28,266 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 124 flow [2023-01-27 18:22:28,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-01-27 18:22:28,267 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-01-27 18:22:28,267 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 124 flow [2023-01-27 18:22:28,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.8) internal successors, (744), 5 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:28,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:28,267 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] [2023-01-27 18:22:28,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 18:22:28,268 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:28,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:28,268 INFO L85 PathProgramCache]: Analyzing trace with hash -879428702, now seen corresponding path program 3 times [2023-01-27 18:22:28,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:28,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709231596] [2023-01-27 18:22:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:28,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:30,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:30,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:30,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709231596] [2023-01-27 18:22:30,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709231596] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:30,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:30,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-27 18:22:30,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364927805] [2023-01-27 18:22:30,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:30,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 18:22:30,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:30,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 18:22:30,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-01-27 18:22:30,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-27 18:22:30,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 124 flow. Second operand has 14 states, 14 states have (on average 104.5) internal successors, (1463), 14 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:30,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:30,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-27 18:22:30,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:30,869 INFO L130 PetriNetUnfolder]: 267/541 cut-off events. [2023-01-27 18:22:30,870 INFO L131 PetriNetUnfolder]: For 350/350 co-relation queries the response was YES. [2023-01-27 18:22:30,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1662 conditions, 541 events. 267/541 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2383 event pairs, 41 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 1653. Up to 260 conditions per place. [2023-01-27 18:22:30,873 INFO L137 encePairwiseOnDemand]: 338/352 looper letters, 78 selfloop transitions, 25 changer transitions 0/103 dead transitions. [2023-01-27 18:22:30,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 103 transitions, 612 flow [2023-01-27 18:22:30,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 18:22:30,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 18:22:30,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1537 transitions. [2023-01-27 18:22:30,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118912337662338 [2023-01-27 18:22:30,878 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1537 transitions. [2023-01-27 18:22:30,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1537 transitions. [2023-01-27 18:22:30,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:30,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1537 transitions. [2023-01-27 18:22:30,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.78571428571429) internal successors, (1537), 14 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:30,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:30,888 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:30,888 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 124 flow. Second operand 14 states and 1537 transitions. [2023-01-27 18:22:30,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 103 transitions, 612 flow [2023-01-27 18:22:30,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 103 transitions, 586 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 18:22:30,892 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 316 flow [2023-01-27 18:22:30,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=316, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2023-01-27 18:22:30,892 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2023-01-27 18:22:30,892 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 316 flow [2023-01-27 18:22:30,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 104.5) internal successors, (1463), 14 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:30,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:30,893 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] [2023-01-27 18:22:30,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 18:22:30,893 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:30,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:30,894 INFO L85 PathProgramCache]: Analyzing trace with hash 150075208, now seen corresponding path program 4 times [2023-01-27 18:22:30,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:30,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792725512] [2023-01-27 18:22:30,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:30,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:32,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:32,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792725512] [2023-01-27 18:22:32,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792725512] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:32,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:32,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-01-27 18:22:32,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275091266] [2023-01-27 18:22:32,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:32,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 18:22:32,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:32,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 18:22:32,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-01-27 18:22:32,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-27 18:22:32,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 316 flow. Second operand has 17 states, 17 states have (on average 104.23529411764706) internal successors, (1772), 17 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:32,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:32,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-27 18:22:32,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:33,940 INFO L130 PetriNetUnfolder]: 305/638 cut-off events. [2023-01-27 18:22:33,940 INFO L131 PetriNetUnfolder]: For 985/985 co-relation queries the response was YES. [2023-01-27 18:22:33,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2396 conditions, 638 events. 305/638 cut-off events. For 985/985 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3043 event pairs, 58 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 2379. Up to 378 conditions per place. [2023-01-27 18:22:33,944 INFO L137 encePairwiseOnDemand]: 336/352 looper letters, 98 selfloop transitions, 31 changer transitions 0/129 dead transitions. [2023-01-27 18:22:33,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 129 transitions, 976 flow [2023-01-27 18:22:33,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 18:22:33,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 18:22:33,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1538 transitions. [2023-01-27 18:22:33,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31209415584415584 [2023-01-27 18:22:33,952 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1538 transitions. [2023-01-27 18:22:33,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1538 transitions. [2023-01-27 18:22:33,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:33,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1538 transitions. [2023-01-27 18:22:33,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.85714285714286) internal successors, (1538), 14 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:33,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:33,965 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:33,965 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 316 flow. Second operand 14 states and 1538 transitions. [2023-01-27 18:22:33,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 129 transitions, 976 flow [2023-01-27 18:22:33,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 129 transitions, 948 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-01-27 18:22:33,971 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 550 flow [2023-01-27 18:22:33,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=550, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2023-01-27 18:22:33,973 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2023-01-27 18:22:33,973 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 550 flow [2023-01-27 18:22:33,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.23529411764706) internal successors, (1772), 17 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:33,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:33,974 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] [2023-01-27 18:22:33,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 18:22:33,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:33,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:33,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1787597420, now seen corresponding path program 5 times [2023-01-27 18:22:33,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:33,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059754525] [2023-01-27 18:22:33,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:33,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:35,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:35,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:35,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059754525] [2023-01-27 18:22:35,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059754525] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:35,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:35,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-01-27 18:22:35,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133991093] [2023-01-27 18:22:35,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:35,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 18:22:35,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:35,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 18:22:35,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-01-27 18:22:35,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-27 18:22:35,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 550 flow. Second operand has 17 states, 17 states have (on average 104.23529411764706) internal successors, (1772), 17 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:35,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:35,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-27 18:22:35,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:37,118 INFO L130 PetriNetUnfolder]: 312/663 cut-off events. [2023-01-27 18:22:37,118 INFO L131 PetriNetUnfolder]: For 1608/1608 co-relation queries the response was YES. [2023-01-27 18:22:37,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 663 events. 312/663 cut-off events. For 1608/1608 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3240 event pairs, 62 based on Foata normal form. 1/663 useless extension candidates. Maximal degree in co-relation 2795. Up to 424 conditions per place. [2023-01-27 18:22:37,123 INFO L137 encePairwiseOnDemand]: 336/352 looper letters, 97 selfloop transitions, 34 changer transitions 0/131 dead transitions. [2023-01-27 18:22:37,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 131 transitions, 1131 flow [2023-01-27 18:22:37,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-27 18:22:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-27 18:22:37,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1640 transitions. [2023-01-27 18:22:37,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2023-01-27 18:22:37,128 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1640 transitions. [2023-01-27 18:22:37,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1640 transitions. [2023-01-27 18:22:37,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:37,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1640 transitions. [2023-01-27 18:22:37,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 109.33333333333333) internal successors, (1640), 15 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:37,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 352.0) internal successors, (5632), 16 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:37,139 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 352.0) internal successors, (5632), 16 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:37,139 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 550 flow. Second operand 15 states and 1640 transitions. [2023-01-27 18:22:37,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 131 transitions, 1131 flow [2023-01-27 18:22:37,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 131 transitions, 1103 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-01-27 18:22:37,148 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 703 flow [2023-01-27 18:22:37,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=703, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2023-01-27 18:22:37,149 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 54 predicate places. [2023-01-27 18:22:37,149 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 703 flow [2023-01-27 18:22:37,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.23529411764706) internal successors, (1772), 17 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:37,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:37,150 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] [2023-01-27 18:22:37,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 18:22:37,150 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:37,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:37,151 INFO L85 PathProgramCache]: Analyzing trace with hash -472083164, now seen corresponding path program 6 times [2023-01-27 18:22:37,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:37,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39586674] [2023-01-27 18:22:37,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:37,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:38,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:38,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39586674] [2023-01-27 18:22:38,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39586674] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:38,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:38,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-01-27 18:22:38,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672184309] [2023-01-27 18:22:38,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:38,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 18:22:38,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:38,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 18:22:38,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-01-27 18:22:38,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-27 18:22:38,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 703 flow. Second operand has 17 states, 17 states have (on average 104.23529411764706) internal successors, (1772), 17 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:38,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:38,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-27 18:22:38,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:39,979 INFO L130 PetriNetUnfolder]: 316/681 cut-off events. [2023-01-27 18:22:39,979 INFO L131 PetriNetUnfolder]: For 1859/1859 co-relation queries the response was YES. [2023-01-27 18:22:39,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3003 conditions, 681 events. 316/681 cut-off events. For 1859/1859 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3364 event pairs, 66 based on Foata normal form. 1/681 useless extension candidates. Maximal degree in co-relation 2973. Up to 433 conditions per place. [2023-01-27 18:22:39,986 INFO L137 encePairwiseOnDemand]: 336/352 looper letters, 102 selfloop transitions, 35 changer transitions 0/137 dead transitions. [2023-01-27 18:22:39,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 137 transitions, 1284 flow [2023-01-27 18:22:39,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 18:22:39,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 18:22:39,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1537 transitions. [2023-01-27 18:22:39,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118912337662338 [2023-01-27 18:22:39,991 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1537 transitions. [2023-01-27 18:22:39,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1537 transitions. [2023-01-27 18:22:39,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:39,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1537 transitions. [2023-01-27 18:22:39,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.78571428571429) internal successors, (1537), 14 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:40,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:40,002 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:40,002 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 703 flow. Second operand 14 states and 1537 transitions. [2023-01-27 18:22:40,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 137 transitions, 1284 flow [2023-01-27 18:22:40,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 137 transitions, 1230 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-01-27 18:22:40,014 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 819 flow [2023-01-27 18:22:40,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=819, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2023-01-27 18:22:40,015 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 62 predicate places. [2023-01-27 18:22:40,015 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 819 flow [2023-01-27 18:22:40,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.23529411764706) internal successors, (1772), 17 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:40,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:40,016 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] [2023-01-27 18:22:40,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 18:22:40,016 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:40,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:40,017 INFO L85 PathProgramCache]: Analyzing trace with hash 636504459, now seen corresponding path program 1 times [2023-01-27 18:22:40,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:40,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674831518] [2023-01-27 18:22:40,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:40,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:40,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:40,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674831518] [2023-01-27 18:22:40,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674831518] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:40,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:40,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 18:22:40,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981861585] [2023-01-27 18:22:40,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:40,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 18:22:40,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:40,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 18:22:40,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-01-27 18:22:40,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 352 [2023-01-27 18:22:40,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 819 flow. Second operand has 8 states, 8 states have (on average 113.625) internal successors, (909), 8 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:40,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:40,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 352 [2023-01-27 18:22:40,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:41,058 INFO L130 PetriNetUnfolder]: 405/926 cut-off events. [2023-01-27 18:22:41,059 INFO L131 PetriNetUnfolder]: For 2806/2806 co-relation queries the response was YES. [2023-01-27 18:22:41,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4095 conditions, 926 events. 405/926 cut-off events. For 2806/2806 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5498 event pairs, 59 based on Foata normal form. 6/931 useless extension candidates. Maximal degree in co-relation 4062. Up to 315 conditions per place. [2023-01-27 18:22:41,067 INFO L137 encePairwiseOnDemand]: 343/352 looper letters, 102 selfloop transitions, 47 changer transitions 15/164 dead transitions. [2023-01-27 18:22:41,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 164 transitions, 1704 flow [2023-01-27 18:22:41,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:22:41,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:22:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 843 transitions. [2023-01-27 18:22:41,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34212662337662336 [2023-01-27 18:22:41,071 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 843 transitions. [2023-01-27 18:22:41,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 843 transitions. [2023-01-27 18:22:41,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:41,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 843 transitions. [2023-01-27 18:22:41,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.42857142857143) internal successors, (843), 7 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:41,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:41,077 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:41,077 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 819 flow. Second operand 7 states and 843 transitions. [2023-01-27 18:22:41,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 164 transitions, 1704 flow [2023-01-27 18:22:41,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 164 transitions, 1594 flow, removed 17 selfloop flow, removed 9 redundant places. [2023-01-27 18:22:41,091 INFO L231 Difference]: Finished difference. Result has 96 places, 98 transitions, 934 flow [2023-01-27 18:22:41,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=934, PETRI_PLACES=96, PETRI_TRANSITIONS=98} [2023-01-27 18:22:41,092 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 60 predicate places. [2023-01-27 18:22:41,092 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 934 flow [2023-01-27 18:22:41,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 113.625) internal successors, (909), 8 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:41,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:41,093 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] [2023-01-27 18:22:41,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 18:22:41,093 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:41,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:41,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1929965402, now seen corresponding path program 7 times [2023-01-27 18:22:41,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:41,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63025956] [2023-01-27 18:22:41,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:41,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:42,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:42,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63025956] [2023-01-27 18:22:42,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63025956] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:42,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:42,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 18:22:42,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270316168] [2023-01-27 18:22:42,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:42,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 18:22:42,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:42,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 18:22:42,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-27 18:22:42,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-27 18:22:42,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 934 flow. Second operand has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:42,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:42,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-27 18:22:42,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:43,491 INFO L130 PetriNetUnfolder]: 402/908 cut-off events. [2023-01-27 18:22:43,492 INFO L131 PetriNetUnfolder]: For 3131/3131 co-relation queries the response was YES. [2023-01-27 18:22:43,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4215 conditions, 908 events. 402/908 cut-off events. For 3131/3131 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5210 event pairs, 161 based on Foata normal form. 2/909 useless extension candidates. Maximal degree in co-relation 4181. Up to 761 conditions per place. [2023-01-27 18:22:43,499 INFO L137 encePairwiseOnDemand]: 339/352 looper letters, 118 selfloop transitions, 23 changer transitions 0/141 dead transitions. [2023-01-27 18:22:43,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 141 transitions, 1513 flow [2023-01-27 18:22:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 18:22:43,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 18:22:43,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1414 transitions. [2023-01-27 18:22:43,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090034965034965 [2023-01-27 18:22:43,503 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1414 transitions. [2023-01-27 18:22:43,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1414 transitions. [2023-01-27 18:22:43,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:43,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1414 transitions. [2023-01-27 18:22:43,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 108.76923076923077) internal successors, (1414), 13 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:43,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 352.0) internal successors, (4928), 14 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:43,520 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 352.0) internal successors, (4928), 14 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:43,520 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 934 flow. Second operand 13 states and 1414 transitions. [2023-01-27 18:22:43,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 141 transitions, 1513 flow [2023-01-27 18:22:43,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 141 transitions, 1436 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-01-27 18:22:43,532 INFO L231 Difference]: Finished difference. Result has 106 places, 108 transitions, 1040 flow [2023-01-27 18:22:43,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1040, PETRI_PLACES=106, PETRI_TRANSITIONS=108} [2023-01-27 18:22:43,533 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 70 predicate places. [2023-01-27 18:22:43,533 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 108 transitions, 1040 flow [2023-01-27 18:22:43,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:43,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:43,534 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] [2023-01-27 18:22:43,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 18:22:43,534 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:43,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:43,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1469704044, now seen corresponding path program 8 times [2023-01-27 18:22:43,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:43,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799252225] [2023-01-27 18:22:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:43,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:43,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:43,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799252225] [2023-01-27 18:22:43,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799252225] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:43,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:43,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 18:22:43,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750132680] [2023-01-27 18:22:43,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:43,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:22:43,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:43,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:22:43,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:22:43,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 352 [2023-01-27 18:22:43,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 108 transitions, 1040 flow. Second operand has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:43,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:43,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 352 [2023-01-27 18:22:43,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:44,101 INFO L130 PetriNetUnfolder]: 155/455 cut-off events. [2023-01-27 18:22:44,101 INFO L131 PetriNetUnfolder]: For 2064/2071 co-relation queries the response was YES. [2023-01-27 18:22:44,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2183 conditions, 455 events. 155/455 cut-off events. For 2064/2071 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2521 event pairs, 90 based on Foata normal form. 14/460 useless extension candidates. Maximal degree in co-relation 2145. Up to 372 conditions per place. [2023-01-27 18:22:44,105 INFO L137 encePairwiseOnDemand]: 347/352 looper letters, 88 selfloop transitions, 11 changer transitions 0/106 dead transitions. [2023-01-27 18:22:44,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 106 transitions, 1209 flow [2023-01-27 18:22:44,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:22:44,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:22:44,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 758 transitions. [2023-01-27 18:22:44,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43068181818181817 [2023-01-27 18:22:44,110 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 758 transitions. [2023-01-27 18:22:44,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 758 transitions. [2023-01-27 18:22:44,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:44,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 758 transitions. [2023-01-27 18:22:44,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.6) internal successors, (758), 5 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:44,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:44,115 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:44,115 INFO L175 Difference]: Start difference. First operand has 106 places, 108 transitions, 1040 flow. Second operand 5 states and 758 transitions. [2023-01-27 18:22:44,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 106 transitions, 1209 flow [2023-01-27 18:22:44,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 106 transitions, 1112 flow, removed 24 selfloop flow, removed 9 redundant places. [2023-01-27 18:22:44,127 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 895 flow [2023-01-27 18:22:44,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=895, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2023-01-27 18:22:44,128 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2023-01-27 18:22:44,128 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 895 flow [2023-01-27 18:22:44,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:44,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:44,129 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] [2023-01-27 18:22:44,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 18:22:44,129 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:44,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:44,129 INFO L85 PathProgramCache]: Analyzing trace with hash 835537406, now seen corresponding path program 9 times [2023-01-27 18:22:44,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:44,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214493863] [2023-01-27 18:22:44,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:44,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:45,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:45,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:45,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214493863] [2023-01-27 18:22:45,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214493863] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:45,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:45,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 18:22:45,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231675108] [2023-01-27 18:22:45,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:45,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 18:22:45,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:45,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 18:22:45,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-27 18:22:45,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-27 18:22:45,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 895 flow. Second operand has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:45,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:45,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-27 18:22:45,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:46,234 INFO L130 PetriNetUnfolder]: 198/554 cut-off events. [2023-01-27 18:22:46,235 INFO L131 PetriNetUnfolder]: For 1905/1905 co-relation queries the response was YES. [2023-01-27 18:22:46,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2442 conditions, 554 events. 198/554 cut-off events. For 1905/1905 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3167 event pairs, 98 based on Foata normal form. 2/555 useless extension candidates. Maximal degree in co-relation 2404. Up to 451 conditions per place. [2023-01-27 18:22:46,239 INFO L137 encePairwiseOnDemand]: 339/352 looper letters, 113 selfloop transitions, 22 changer transitions 0/135 dead transitions. [2023-01-27 18:22:46,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 135 transitions, 1419 flow [2023-01-27 18:22:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 18:22:46,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 18:22:46,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1302 transitions. [2023-01-27 18:22:46,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30823863636363635 [2023-01-27 18:22:46,242 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1302 transitions. [2023-01-27 18:22:46,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1302 transitions. [2023-01-27 18:22:46,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:46,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1302 transitions. [2023-01-27 18:22:46,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 108.5) internal successors, (1302), 12 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:46,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:46,250 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:46,250 INFO L175 Difference]: Start difference. First operand has 100 places, 97 transitions, 895 flow. Second operand 12 states and 1302 transitions. [2023-01-27 18:22:46,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 135 transitions, 1419 flow [2023-01-27 18:22:46,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 135 transitions, 1408 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 18:22:46,262 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 1075 flow [2023-01-27 18:22:46,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1075, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2023-01-27 18:22:46,263 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 79 predicate places. [2023-01-27 18:22:46,263 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 1075 flow [2023-01-27 18:22:46,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:46,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:46,264 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] [2023-01-27 18:22:46,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 18:22:46,264 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:46,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:46,264 INFO L85 PathProgramCache]: Analyzing trace with hash 420697918, now seen corresponding path program 10 times [2023-01-27 18:22:46,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:46,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987970784] [2023-01-27 18:22:46,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:46,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:47,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:47,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:47,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987970784] [2023-01-27 18:22:47,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987970784] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:47,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:47,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 18:22:47,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500896530] [2023-01-27 18:22:47,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:47,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 18:22:47,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:47,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 18:22:47,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-27 18:22:47,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-27 18:22:47,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 1075 flow. Second operand has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:47,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:47,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-27 18:22:47,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:48,381 INFO L130 PetriNetUnfolder]: 216/607 cut-off events. [2023-01-27 18:22:48,381 INFO L131 PetriNetUnfolder]: For 2693/2693 co-relation queries the response was YES. [2023-01-27 18:22:48,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2834 conditions, 607 events. 216/607 cut-off events. For 2693/2693 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3615 event pairs, 114 based on Foata normal form. 2/608 useless extension candidates. Maximal degree in co-relation 2790. Up to 504 conditions per place. [2023-01-27 18:22:48,387 INFO L137 encePairwiseOnDemand]: 339/352 looper letters, 120 selfloop transitions, 22 changer transitions 0/142 dead transitions. [2023-01-27 18:22:48,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 142 transitions, 1605 flow [2023-01-27 18:22:48,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 18:22:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 18:22:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1302 transitions. [2023-01-27 18:22:48,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30823863636363635 [2023-01-27 18:22:48,390 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1302 transitions. [2023-01-27 18:22:48,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1302 transitions. [2023-01-27 18:22:48,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:48,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1302 transitions. [2023-01-27 18:22:48,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 108.5) internal successors, (1302), 12 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:48,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:48,398 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:48,398 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 1075 flow. Second operand 12 states and 1302 transitions. [2023-01-27 18:22:48,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 142 transitions, 1605 flow [2023-01-27 18:22:48,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 142 transitions, 1538 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-01-27 18:22:48,414 INFO L231 Difference]: Finished difference. Result has 129 places, 116 transitions, 1197 flow [2023-01-27 18:22:48,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1197, PETRI_PLACES=129, PETRI_TRANSITIONS=116} [2023-01-27 18:22:48,415 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 93 predicate places. [2023-01-27 18:22:48,415 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 116 transitions, 1197 flow [2023-01-27 18:22:48,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:48,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:48,416 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] [2023-01-27 18:22:48,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-27 18:22:48,416 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:48,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:48,416 INFO L85 PathProgramCache]: Analyzing trace with hash 620461591, now seen corresponding path program 2 times [2023-01-27 18:22:48,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:48,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546438914] [2023-01-27 18:22:48,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:48,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:49,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:49,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:49,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546438914] [2023-01-27 18:22:49,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546438914] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:49,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:49,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 18:22:49,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457261258] [2023-01-27 18:22:49,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:49,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 18:22:49,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:49,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 18:22:49,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-01-27 18:22:49,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 352 [2023-01-27 18:22:49,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 116 transitions, 1197 flow. Second operand has 11 states, 11 states have (on average 107.9090909090909) internal successors, (1187), 11 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:49,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:49,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 352 [2023-01-27 18:22:49,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:49,656 INFO L130 PetriNetUnfolder]: 232/681 cut-off events. [2023-01-27 18:22:49,656 INFO L131 PetriNetUnfolder]: For 3191/3191 co-relation queries the response was YES. [2023-01-27 18:22:49,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3185 conditions, 681 events. 232/681 cut-off events. For 3191/3191 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4320 event pairs, 81 based on Foata normal form. 11/691 useless extension candidates. Maximal degree in co-relation 3135. Up to 239 conditions per place. [2023-01-27 18:22:49,662 INFO L137 encePairwiseOnDemand]: 343/352 looper letters, 103 selfloop transitions, 39 changer transitions 32/174 dead transitions. [2023-01-27 18:22:49,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 174 transitions, 2054 flow [2023-01-27 18:22:49,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 18:22:49,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 18:22:49,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1451 transitions. [2023-01-27 18:22:49,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31708916083916083 [2023-01-27 18:22:49,665 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1451 transitions. [2023-01-27 18:22:49,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1451 transitions. [2023-01-27 18:22:49,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:49,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1451 transitions. [2023-01-27 18:22:49,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 111.61538461538461) internal successors, (1451), 13 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:49,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 352.0) internal successors, (4928), 14 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:49,673 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 352.0) internal successors, (4928), 14 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:49,673 INFO L175 Difference]: Start difference. First operand has 129 places, 116 transitions, 1197 flow. Second operand 13 states and 1451 transitions. [2023-01-27 18:22:49,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 174 transitions, 2054 flow [2023-01-27 18:22:49,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 174 transitions, 1996 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-01-27 18:22:49,694 INFO L231 Difference]: Finished difference. Result has 141 places, 89 transitions, 1019 flow [2023-01-27 18:22:49,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1019, PETRI_PLACES=141, PETRI_TRANSITIONS=89} [2023-01-27 18:22:49,694 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 105 predicate places. [2023-01-27 18:22:49,695 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 89 transitions, 1019 flow [2023-01-27 18:22:49,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.9090909090909) internal successors, (1187), 11 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:49,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:49,695 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] [2023-01-27 18:22:49,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-27 18:22:49,695 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:49,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:49,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1153106705, now seen corresponding path program 3 times [2023-01-27 18:22:49,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:49,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34260493] [2023-01-27 18:22:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:49,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:50,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:50,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34260493] [2023-01-27 18:22:50,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34260493] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:50,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:50,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 18:22:50,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832016807] [2023-01-27 18:22:50,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:50,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 18:22:50,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:50,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 18:22:50,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-01-27 18:22:50,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 352 [2023-01-27 18:22:50,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 89 transitions, 1019 flow. Second operand has 8 states, 8 states have (on average 113.625) internal successors, (909), 8 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:50,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:50,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 352 [2023-01-27 18:22:50,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:50,562 INFO L130 PetriNetUnfolder]: 155/456 cut-off events. [2023-01-27 18:22:50,562 INFO L131 PetriNetUnfolder]: For 2823/2823 co-relation queries the response was YES. [2023-01-27 18:22:50,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 456 events. 155/456 cut-off events. For 2823/2823 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2496 event pairs, 37 based on Foata normal form. 5/461 useless extension candidates. Maximal degree in co-relation 2253. Up to 160 conditions per place. [2023-01-27 18:22:50,566 INFO L137 encePairwiseOnDemand]: 344/352 looper letters, 92 selfloop transitions, 28 changer transitions 12/132 dead transitions. [2023-01-27 18:22:50,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 132 transitions, 1598 flow [2023-01-27 18:22:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:22:50,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:22:50,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 841 transitions. [2023-01-27 18:22:50,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34131493506493504 [2023-01-27 18:22:50,567 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 841 transitions. [2023-01-27 18:22:50,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 841 transitions. [2023-01-27 18:22:50,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:50,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 841 transitions. [2023-01-27 18:22:50,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.14285714285714) internal successors, (841), 7 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:50,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:50,571 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:50,571 INFO L175 Difference]: Start difference. First operand has 141 places, 89 transitions, 1019 flow. Second operand 7 states and 841 transitions. [2023-01-27 18:22:50,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 132 transitions, 1598 flow [2023-01-27 18:22:50,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 132 transitions, 1320 flow, removed 99 selfloop flow, removed 28 redundant places. [2023-01-27 18:22:50,586 INFO L231 Difference]: Finished difference. Result has 103 places, 78 transitions, 774 flow [2023-01-27 18:22:50,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=774, PETRI_PLACES=103, PETRI_TRANSITIONS=78} [2023-01-27 18:22:50,586 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 67 predicate places. [2023-01-27 18:22:50,586 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 78 transitions, 774 flow [2023-01-27 18:22:50,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 113.625) internal successors, (909), 8 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:50,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:50,587 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] [2023-01-27 18:22:50,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 18:22:50,587 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:50,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:50,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1122143276, now seen corresponding path program 11 times [2023-01-27 18:22:50,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:50,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127118987] [2023-01-27 18:22:50,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:50,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:51,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:51,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:51,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127118987] [2023-01-27 18:22:51,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127118987] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:51,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:51,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 18:22:51,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286156821] [2023-01-27 18:22:51,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:51,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 18:22:51,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:51,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 18:22:51,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-27 18:22:51,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-27 18:22:51,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 78 transitions, 774 flow. Second operand has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:51,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:51,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-27 18:22:51,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:52,483 INFO L130 PetriNetUnfolder]: 178/504 cut-off events. [2023-01-27 18:22:52,483 INFO L131 PetriNetUnfolder]: For 2219/2219 co-relation queries the response was YES. [2023-01-27 18:22:52,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 504 events. 178/504 cut-off events. For 2219/2219 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2772 event pairs, 67 based on Foata normal form. 3/507 useless extension candidates. Maximal degree in co-relation 2222. Up to 357 conditions per place. [2023-01-27 18:22:52,488 INFO L137 encePairwiseOnDemand]: 339/352 looper letters, 84 selfloop transitions, 23 changer transitions 16/123 dead transitions. [2023-01-27 18:22:52,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 123 transitions, 1348 flow [2023-01-27 18:22:52,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 18:22:52,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 18:22:52,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1307 transitions. [2023-01-27 18:22:52,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3094223484848485 [2023-01-27 18:22:52,491 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1307 transitions. [2023-01-27 18:22:52,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1307 transitions. [2023-01-27 18:22:52,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:52,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1307 transitions. [2023-01-27 18:22:52,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 108.91666666666667) internal successors, (1307), 12 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:52,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:52,498 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:52,498 INFO L175 Difference]: Start difference. First operand has 103 places, 78 transitions, 774 flow. Second operand 12 states and 1307 transitions. [2023-01-27 18:22:52,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 123 transitions, 1348 flow [2023-01-27 18:22:52,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 123 transitions, 1243 flow, removed 32 selfloop flow, removed 10 redundant places. [2023-01-27 18:22:52,528 INFO L231 Difference]: Finished difference. Result has 101 places, 87 transitions, 876 flow [2023-01-27 18:22:52,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=876, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2023-01-27 18:22:52,529 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 65 predicate places. [2023-01-27 18:22:52,529 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 876 flow [2023-01-27 18:22:52,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:52,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:52,530 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] [2023-01-27 18:22:52,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-27 18:22:52,530 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:52,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:52,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1454018746, now seen corresponding path program 12 times [2023-01-27 18:22:52,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:52,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703072686] [2023-01-27 18:22:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:52,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:53,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:53,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703072686] [2023-01-27 18:22:53,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703072686] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:53,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:53,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 18:22:53,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84873181] [2023-01-27 18:22:53,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:53,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 18:22:53,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:53,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 18:22:53,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-27 18:22:53,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-27 18:22:53,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 876 flow. Second operand has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:53,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:53,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-27 18:22:53,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:54,346 INFO L130 PetriNetUnfolder]: 163/472 cut-off events. [2023-01-27 18:22:54,346 INFO L131 PetriNetUnfolder]: For 2081/2081 co-relation queries the response was YES. [2023-01-27 18:22:54,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2141 conditions, 472 events. 163/472 cut-off events. For 2081/2081 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2558 event pairs, 65 based on Foata normal form. 2/474 useless extension candidates. Maximal degree in co-relation 2107. Up to 351 conditions per place. [2023-01-27 18:22:54,349 INFO L137 encePairwiseOnDemand]: 340/352 looper letters, 80 selfloop transitions, 18 changer transitions 21/119 dead transitions. [2023-01-27 18:22:54,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 119 transitions, 1313 flow [2023-01-27 18:22:54,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 18:22:54,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 18:22:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1306 transitions. [2023-01-27 18:22:54,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3091856060606061 [2023-01-27 18:22:54,359 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1306 transitions. [2023-01-27 18:22:54,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1306 transitions. [2023-01-27 18:22:54,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:54,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1306 transitions. [2023-01-27 18:22:54,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 108.83333333333333) internal successors, (1306), 12 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:54,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:54,365 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:54,365 INFO L175 Difference]: Start difference. First operand has 101 places, 87 transitions, 876 flow. Second operand 12 states and 1306 transitions. [2023-01-27 18:22:54,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 119 transitions, 1313 flow [2023-01-27 18:22:54,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 119 transitions, 1270 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-01-27 18:22:54,376 INFO L231 Difference]: Finished difference. Result has 108 places, 83 transitions, 839 flow [2023-01-27 18:22:54,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=839, PETRI_PLACES=108, PETRI_TRANSITIONS=83} [2023-01-27 18:22:54,376 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 72 predicate places. [2023-01-27 18:22:54,376 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 83 transitions, 839 flow [2023-01-27 18:22:54,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:22:54,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:54,377 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] [2023-01-27 18:22:54,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-27 18:22:54,377 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-27 18:22:54,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:54,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1412750582, now seen corresponding path program 13 times [2023-01-27 18:22:54,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:54,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476807976] [2023-01-27 18:22:54,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:54,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:54,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-27 18:22:54,993 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:383) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-01-27 18:22:55,007 INFO L158 Benchmark]: Toolchain (without parser) took 41630.88ms. Allocated memory was 559.9MB in the beginning and 1.2GB in the end (delta: 608.2MB). Free memory was 495.2MB in the beginning and 578.4MB in the end (delta: -83.2MB). Peak memory consumption was 527.1MB. Max. memory is 16.0GB. [2023-01-27 18:22:55,007 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 369.1MB. Free memory is still 319.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:22:55,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 769.96ms. Allocated memory is still 559.9MB. Free memory was 495.2MB in the beginning and 441.8MB in the end (delta: 53.5MB). Peak memory consumption was 52.4MB. Max. memory is 16.0GB. [2023-01-27 18:22:55,008 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.96ms. Allocated memory is still 559.9MB. Free memory was 441.8MB in the beginning and 438.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 18:22:55,008 INFO L158 Benchmark]: Boogie Preprocessor took 52.77ms. Allocated memory is still 559.9MB. Free memory was 438.6MB in the beginning and 435.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:22:55,008 INFO L158 Benchmark]: RCFGBuilder took 566.38ms. Allocated memory is still 559.9MB. Free memory was 435.5MB in the beginning and 409.3MB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-01-27 18:22:55,021 INFO L158 Benchmark]: TraceAbstraction took 40168.84ms. Allocated memory was 559.9MB in the beginning and 1.2GB in the end (delta: 608.2MB). Free memory was 409.3MB in the beginning and 578.4MB in the end (delta: -169.2MB). Peak memory consumption was 441.1MB. Max. memory is 16.0GB. [2023-01-27 18:22:55,022 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 369.1MB. Free memory is still 319.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 769.96ms. Allocated memory is still 559.9MB. Free memory was 495.2MB in the beginning and 441.8MB in the end (delta: 53.5MB). Peak memory consumption was 52.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 65.96ms. Allocated memory is still 559.9MB. Free memory was 441.8MB in the beginning and 438.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 52.77ms. Allocated memory is still 559.9MB. Free memory was 438.6MB in the beginning and 435.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 566.38ms. Allocated memory is still 559.9MB. Free memory was 435.5MB in the beginning and 409.3MB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * TraceAbstraction took 40168.84ms. Allocated memory was 559.9MB in the beginning and 1.2GB in the end (delta: 608.2MB). Free memory was 409.3MB in the beginning and 578.4MB in the end (delta: -169.2MB). Peak memory consumption was 441.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.8s, 163 PlacesBefore, 36 PlacesAfterwards, 163 TransitionsBefore, 32 TransitionsAfterwards, 2604 CoEnabledTransitionPairs, 8 FixpointIterations, 97 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 14 ConcurrentYvCompositions, 4 ChoiceCompositions, 177 TotalNumberOfCompositions, 5770 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2818, independent: 2592, independent conditional: 0, independent unconditional: 2592, dependent: 226, dependent conditional: 0, dependent unconditional: 226, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1388, independent: 1342, independent conditional: 0, independent unconditional: 1342, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2818, independent: 1250, independent conditional: 0, independent unconditional: 1250, dependent: 180, dependent conditional: 0, dependent unconditional: 180, unknown: 1388, unknown conditional: 0, unknown unconditional: 1388] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-01-27 18:22:55,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...