./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix002.oepc.i --full-output --preprocessor.use.memory.slicer true --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix002.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e77d530bbfcfe22638f8b89e94c23e25f591d8037158e571482779188378fc47 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 17:15:17,072 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 17:15:17,174 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-22 17:15:17,179 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 17:15:17,180 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 17:15:17,197 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 17:15:17,199 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 17:15:17,200 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 17:15:17,201 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 17:15:17,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 17:15:17,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 17:15:17,204 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 17:15:17,205 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 17:15:17,206 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 17:15:17,206 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 17:15:17,206 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 17:15:17,206 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 17:15:17,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 17:15:17,207 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-22 17:15:17,207 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-22 17:15:17,207 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-22 17:15:17,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 17:15:17,208 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-22 17:15:17,208 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-22 17:15:17,208 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 17:15:17,208 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 17:15:17,209 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 17:15:17,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 17:15:17,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 17:15:17,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 17:15:17,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 17:15:17,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 17:15:17,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 17:15:17,211 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 17:15:17,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 17:15:17,211 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 17:15:17,211 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 17:15:17,211 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 17:15:17,212 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 17:15:17,212 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e77d530bbfcfe22638f8b89e94c23e25f591d8037158e571482779188378fc47 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 17:15:17,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 17:15:17,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 17:15:17,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 17:15:17,447 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 17:15:17,447 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 17:15:17,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix002.oepc.i [2023-11-22 17:15:18,511 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 17:15:18,699 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 17:15:18,699 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix002.oepc.i [2023-11-22 17:15:18,710 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fc4ae7cf/fcb520fb0a9c48818817be00e3e4ca43/FLAGc7e11dc34 [2023-11-22 17:15:18,719 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fc4ae7cf/fcb520fb0a9c48818817be00e3e4ca43 [2023-11-22 17:15:18,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 17:15:18,722 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 17:15:18,723 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 17:15:18,723 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 17:15:18,727 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 17:15:18,728 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 05:15:18" (1/1) ... [2023-11-22 17:15:18,728 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef5056b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:15:18, skipping insertion in model container [2023-11-22 17:15:18,728 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 05:15:18" (1/1) ... [2023-11-22 17:15:18,770 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 17:15:19,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 17:15:19,127 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 17:15:19,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 17:15:19,204 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 17:15:19,204 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 17:15:19,210 INFO L206 MainTranslator]: Completed translation [2023-11-22 17:15:19,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:15:19 WrapperNode [2023-11-22 17:15:19,210 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 17:15:19,211 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 17:15:19,211 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 17:15:19,211 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 17:15:19,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:15:19" (1/1) ... [2023-11-22 17:15:19,245 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:15:19" (1/1) ... [2023-11-22 17:15:19,280 INFO L138 Inliner]: procedures = 176, calls = 63, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 144 [2023-11-22 17:15:19,282 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 17:15:19,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 17:15:19,283 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 17:15:19,283 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 17:15:19,292 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:15:19" (1/1) ... [2023-11-22 17:15:19,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:15:19" (1/1) ... [2023-11-22 17:15:19,317 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:15:19" (1/1) ... [2023-11-22 17:15:19,328 INFO L189 HeapSplitter]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1] [2023-11-22 17:15:19,331 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:15:19" (1/1) ... [2023-11-22 17:15:19,331 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:15:19" (1/1) ... [2023-11-22 17:15:19,337 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:15:19" (1/1) ... [2023-11-22 17:15:19,353 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:15:19" (1/1) ... [2023-11-22 17:15:19,355 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:15:19" (1/1) ... [2023-11-22 17:15:19,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:15:19" (1/1) ... [2023-11-22 17:15:19,359 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 17:15:19,360 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 17:15:19,360 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 17:15:19,360 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 17:15:19,361 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:15:19" (1/1) ... [2023-11-22 17:15:19,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 17:15:19,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 17:15:19,408 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) [2023-11-22 17:15:19,426 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 [2023-11-22 17:15:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-22 17:15:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-22 17:15:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-22 17:15:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-22 17:15:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-22 17:15:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 17:15:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 17:15:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 17:15:19,449 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-22 17:15:19,449 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-22 17:15:19,449 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-22 17:15:19,449 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-22 17:15:19,450 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-22 17:15:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-22 17:15:19,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 17:15:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 17:15:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 17:15:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-22 17:15:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-22 17:15:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 17:15:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 17:15:19,454 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-22 17:15:19,620 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 17:15:19,622 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 17:15:19,916 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 17:15:20,101 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 17:15:20,101 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-22 17:15:20,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 05:15:20 BoogieIcfgContainer [2023-11-22 17:15:20,102 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 17:15:20,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 17:15:20,103 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 17:15:20,105 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 17:15:20,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 05:15:18" (1/3) ... [2023-11-22 17:15:20,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59028331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 05:15:20, skipping insertion in model container [2023-11-22 17:15:20,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:15:19" (2/3) ... [2023-11-22 17:15:20,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59028331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 05:15:20, skipping insertion in model container [2023-11-22 17:15:20,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 05:15:20" (3/3) ... [2023-11-22 17:15:20,108 INFO L112 eAbstractionObserver]: Analyzing ICFG mix002.oepc.i [2023-11-22 17:15:20,123 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 17:15:20,124 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-22 17:15:20,124 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-22 17:15:20,160 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-22 17:15:20,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 57 transitions, 126 flow [2023-11-22 17:15:20,233 INFO L124 PetriNetUnfolderBase]: 2/54 cut-off events. [2023-11-22 17:15:20,233 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-22 17:15:20,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 110 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-11-22 17:15:20,239 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 57 transitions, 126 flow [2023-11-22 17:15:20,243 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 54 transitions, 117 flow [2023-11-22 17:15:20,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 17:15:20,267 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=All, 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;@17354778, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 17:15:20,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-22 17:15:20,271 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-22 17:15:20,271 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-22 17:15:20,271 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-22 17:15:20,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:20,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-22 17:15:20,272 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:20,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:20,277 INFO L85 PathProgramCache]: Analyzing trace with hash 13051, now seen corresponding path program 1 times [2023-11-22 17:15:20,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:20,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892504921] [2023-11-22 17:15:20,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:20,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:20,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:20,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892504921] [2023-11-22 17:15:20,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892504921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:20,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:20,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-22 17:15:20,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111904161] [2023-11-22 17:15:20,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:20,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 17:15:20,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:20,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 17:15:20,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 17:15:20,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 57 [2023-11-22 17:15:20,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:20,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:20,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 57 [2023-11-22 17:15:20,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:21,017 INFO L124 PetriNetUnfolderBase]: 1057/2060 cut-off events. [2023-11-22 17:15:21,018 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-22 17:15:21,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3686 conditions, 2060 events. 1057/2060 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14391 event pairs, 791 based on Foata normal form. 120/1967 useless extension candidates. Maximal degree in co-relation 3672. Up to 1193 conditions per place. [2023-11-22 17:15:21,035 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 30 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-11-22 17:15:21,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 191 flow [2023-11-22 17:15:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 17:15:21,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-22 17:15:21,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2023-11-22 17:15:21,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7309941520467836 [2023-11-22 17:15:21,048 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2023-11-22 17:15:21,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2023-11-22 17:15:21,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:21,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2023-11-22 17:15:21,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,060 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 117 flow. Second operand 3 states and 125 transitions. [2023-11-22 17:15:21,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 191 flow [2023-11-22 17:15:21,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 188 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-22 17:15:21,068 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 110 flow [2023-11-22 17:15:21,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-11-22 17:15:21,073 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -3 predicate places. [2023-11-22 17:15:21,074 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 110 flow [2023-11-22 17:15:21,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:21,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-22 17:15:21,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 17:15:21,075 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:21,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:21,076 INFO L85 PathProgramCache]: Analyzing trace with hash 13052, now seen corresponding path program 1 times [2023-11-22 17:15:21,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:21,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628640316] [2023-11-22 17:15:21,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:21,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:21,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:21,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:21,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628640316] [2023-11-22 17:15:21,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628640316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:21,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:21,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-22 17:15:21,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853442783] [2023-11-22 17:15:21,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:21,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 17:15:21,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:21,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 17:15:21,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 17:15:21,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 57 [2023-11-22 17:15:21,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:21,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 57 [2023-11-22 17:15:21,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:21,373 INFO L124 PetriNetUnfolderBase]: 1057/2059 cut-off events. [2023-11-22 17:15:21,373 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-22 17:15:21,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3743 conditions, 2059 events. 1057/2059 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14391 event pairs, 791 based on Foata normal form. 1/1847 useless extension candidates. Maximal degree in co-relation 3732. Up to 1192 conditions per place. [2023-11-22 17:15:21,382 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 29 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-22 17:15:21,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 188 flow [2023-11-22 17:15:21,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 17:15:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-22 17:15:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2023-11-22 17:15:21,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7309941520467836 [2023-11-22 17:15:21,384 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2023-11-22 17:15:21,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2023-11-22 17:15:21,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:21,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2023-11-22 17:15:21,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,386 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,386 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 110 flow. Second operand 3 states and 125 transitions. [2023-11-22 17:15:21,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 188 flow [2023-11-22 17:15:21,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-22 17:15:21,389 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 108 flow [2023-11-22 17:15:21,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-11-22 17:15:21,389 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2023-11-22 17:15:21,390 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 108 flow [2023-11-22 17:15:21,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:21,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-22 17:15:21,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 17:15:21,390 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:21,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:21,391 INFO L85 PathProgramCache]: Analyzing trace with hash 389194271, now seen corresponding path program 1 times [2023-11-22 17:15:21,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:21,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116404568] [2023-11-22 17:15:21,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:21,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:21,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:21,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116404568] [2023-11-22 17:15:21,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116404568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:21,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:21,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 17:15:21,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676759095] [2023-11-22 17:15:21,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:21,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 17:15:21,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:21,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 17:15:21,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 17:15:21,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 57 [2023-11-22 17:15:21,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:21,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 57 [2023-11-22 17:15:21,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:21,622 INFO L124 PetriNetUnfolderBase]: 1061/2050 cut-off events. [2023-11-22 17:15:21,622 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-22 17:15:21,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3743 conditions, 2050 events. 1061/2050 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14270 event pairs, 815 based on Foata normal form. 0/1847 useless extension candidates. Maximal degree in co-relation 3732. Up to 1195 conditions per place. [2023-11-22 17:15:21,632 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 30 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-22 17:15:21,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 188 flow [2023-11-22 17:15:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 17:15:21,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-22 17:15:21,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2023-11-22 17:15:21,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2023-11-22 17:15:21,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 123 transitions. [2023-11-22 17:15:21,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 123 transitions. [2023-11-22 17:15:21,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:21,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 123 transitions. [2023-11-22 17:15:21,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,640 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 108 flow. Second operand 3 states and 123 transitions. [2023-11-22 17:15:21,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 188 flow [2023-11-22 17:15:21,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-22 17:15:21,643 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 106 flow [2023-11-22 17:15:21,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2023-11-22 17:15:21,644 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2023-11-22 17:15:21,644 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 106 flow [2023-11-22 17:15:21,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:21,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-22 17:15:21,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 17:15:21,645 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:21,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:21,646 INFO L85 PathProgramCache]: Analyzing trace with hash 389194272, now seen corresponding path program 1 times [2023-11-22 17:15:21,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:21,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442862779] [2023-11-22 17:15:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:21,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:21,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:21,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:21,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442862779] [2023-11-22 17:15:21,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442862779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:21,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:21,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 17:15:21,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511417831] [2023-11-22 17:15:21,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:21,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 17:15:21,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:21,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 17:15:21,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 17:15:21,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 57 [2023-11-22 17:15:21,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:21,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 57 [2023-11-22 17:15:21,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:21,949 INFO L124 PetriNetUnfolderBase]: 1057/2049 cut-off events. [2023-11-22 17:15:21,949 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-22 17:15:21,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3737 conditions, 2049 events. 1057/2049 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14472 event pairs, 571 based on Foata normal form. 5/1854 useless extension candidates. Maximal degree in co-relation 3727. Up to 1186 conditions per place. [2023-11-22 17:15:21,959 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 29 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-22 17:15:21,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 184 flow [2023-11-22 17:15:21,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 17:15:21,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-22 17:15:21,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2023-11-22 17:15:21,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7309941520467836 [2023-11-22 17:15:21,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2023-11-22 17:15:21,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2023-11-22 17:15:21,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:21,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2023-11-22 17:15:21,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,963 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 106 flow. Second operand 3 states and 125 transitions. [2023-11-22 17:15:21,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 184 flow [2023-11-22 17:15:21,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-22 17:15:21,964 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 104 flow [2023-11-22 17:15:21,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2023-11-22 17:15:21,966 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2023-11-22 17:15:21,966 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 104 flow [2023-11-22 17:15:21,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:21,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:21,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-22 17:15:21,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 17:15:21,967 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:21,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:21,967 INFO L85 PathProgramCache]: Analyzing trace with hash 389195794, now seen corresponding path program 1 times [2023-11-22 17:15:21,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:21,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211604732] [2023-11-22 17:15:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:21,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:22,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:22,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211604732] [2023-11-22 17:15:22,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211604732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:22,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:22,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-22 17:15:22,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70866833] [2023-11-22 17:15:22,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:22,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 17:15:22,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:22,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 17:15:22,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 17:15:22,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 57 [2023-11-22 17:15:22,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:22,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:22,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 57 [2023-11-22 17:15:22,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:22,225 INFO L124 PetriNetUnfolderBase]: 825/1750 cut-off events. [2023-11-22 17:15:22,225 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-22 17:15:22,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3081 conditions, 1750 events. 825/1750 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12530 event pairs, 129 based on Foata normal form. 0/1726 useless extension candidates. Maximal degree in co-relation 3071. Up to 1009 conditions per place. [2023-11-22 17:15:22,233 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 33 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2023-11-22 17:15:22,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 62 transitions, 216 flow [2023-11-22 17:15:22,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 17:15:22,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-22 17:15:22,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2023-11-22 17:15:22,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.783625730994152 [2023-11-22 17:15:22,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 134 transitions. [2023-11-22 17:15:22,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 134 transitions. [2023-11-22 17:15:22,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:22,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 134 transitions. [2023-11-22 17:15:22,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:22,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:22,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:22,236 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 104 flow. Second operand 3 states and 134 transitions. [2023-11-22 17:15:22,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 62 transitions, 216 flow [2023-11-22 17:15:22,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-22 17:15:22,237 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 100 flow [2023-11-22 17:15:22,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2023-11-22 17:15:22,238 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -7 predicate places. [2023-11-22 17:15:22,238 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 100 flow [2023-11-22 17:15:22,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:22,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:22,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:15:22,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-22 17:15:22,239 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:22,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:22,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1924775771, now seen corresponding path program 1 times [2023-11-22 17:15:22,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:22,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827707112] [2023-11-22 17:15:22,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:22,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:22,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:22,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:22,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827707112] [2023-11-22 17:15:22,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827707112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:22,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:22,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 17:15:22,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362599347] [2023-11-22 17:15:22,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:22,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 17:15:22,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:22,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 17:15:22,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 17:15:22,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 57 [2023-11-22 17:15:22,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:22,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:22,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 57 [2023-11-22 17:15:22,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:22,567 INFO L124 PetriNetUnfolderBase]: 738/1453 cut-off events. [2023-11-22 17:15:22,567 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2023-11-22 17:15:22,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 1453 events. 738/1453 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9658 event pairs, 428 based on Foata normal form. 0/1397 useless extension candidates. Maximal degree in co-relation 2694. Up to 934 conditions per place. [2023-11-22 17:15:22,573 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 27 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-11-22 17:15:22,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 174 flow [2023-11-22 17:15:22,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 17:15:22,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-22 17:15:22,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2023-11-22 17:15:22,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2023-11-22 17:15:22,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 120 transitions. [2023-11-22 17:15:22,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 120 transitions. [2023-11-22 17:15:22,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:22,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 120 transitions. [2023-11-22 17:15:22,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:22,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:22,576 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:22,576 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 100 flow. Second operand 3 states and 120 transitions. [2023-11-22 17:15:22,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 174 flow [2023-11-22 17:15:22,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-22 17:15:22,578 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 98 flow [2023-11-22 17:15:22,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-22 17:15:22,581 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -9 predicate places. [2023-11-22 17:15:22,581 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 98 flow [2023-11-22 17:15:22,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:22,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:22,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:15:22,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-22 17:15:22,582 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:22,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:22,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1924775770, now seen corresponding path program 1 times [2023-11-22 17:15:22,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:22,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784037814] [2023-11-22 17:15:22,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:22,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:22,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:22,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:22,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784037814] [2023-11-22 17:15:22,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784037814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:22,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:22,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 17:15:22,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609615535] [2023-11-22 17:15:22,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:22,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 17:15:22,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:22,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 17:15:22,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 17:15:22,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 57 [2023-11-22 17:15:22,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:22,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:22,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 57 [2023-11-22 17:15:22,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:22,773 INFO L124 PetriNetUnfolderBase]: 721/1444 cut-off events. [2023-11-22 17:15:22,773 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-22 17:15:22,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2631 conditions, 1444 events. 721/1444 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9742 event pairs, 260 based on Foata normal form. 12/1408 useless extension candidates. Maximal degree in co-relation 2621. Up to 905 conditions per place. [2023-11-22 17:15:22,780 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 26 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-11-22 17:15:22,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 168 flow [2023-11-22 17:15:22,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 17:15:22,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-22 17:15:22,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2023-11-22 17:15:22,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7134502923976608 [2023-11-22 17:15:22,781 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2023-11-22 17:15:22,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2023-11-22 17:15:22,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:22,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2023-11-22 17:15:22,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:22,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:22,783 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:22,783 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 98 flow. Second operand 3 states and 122 transitions. [2023-11-22 17:15:22,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 168 flow [2023-11-22 17:15:22,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-22 17:15:22,784 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 96 flow [2023-11-22 17:15:22,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-11-22 17:15:22,785 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -10 predicate places. [2023-11-22 17:15:22,785 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 96 flow [2023-11-22 17:15:22,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:22,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:22,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:15:22,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-22 17:15:22,786 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:22,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:22,786 INFO L85 PathProgramCache]: Analyzing trace with hash -739424369, now seen corresponding path program 1 times [2023-11-22 17:15:22,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:22,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881562736] [2023-11-22 17:15:22,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:22,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:23,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:23,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881562736] [2023-11-22 17:15:23,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881562736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:23,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:23,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 17:15:23,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086031634] [2023-11-22 17:15:23,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:23,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 17:15:23,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:23,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 17:15:23,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-22 17:15:23,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2023-11-22 17:15:23,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 96 flow. Second operand has 9 states, 9 states have (on average 29.666666666666668) internal successors, (267), 9 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:23,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:23,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2023-11-22 17:15:23,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:23,691 INFO L124 PetriNetUnfolderBase]: 1803/3302 cut-off events. [2023-11-22 17:15:23,691 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2023-11-22 17:15:23,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6192 conditions, 3302 events. 1803/3302 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 23611 event pairs, 582 based on Foata normal form. 64/3336 useless extension candidates. Maximal degree in co-relation 6181. Up to 1231 conditions per place. [2023-11-22 17:15:23,706 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 53 selfloop transitions, 5 changer transitions 11/88 dead transitions. [2023-11-22 17:15:23,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 88 transitions, 334 flow [2023-11-22 17:15:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 17:15:23,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-22 17:15:23,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 266 transitions. [2023-11-22 17:15:23,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-22 17:15:23,708 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 266 transitions. [2023-11-22 17:15:23,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 266 transitions. [2023-11-22 17:15:23,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:23,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 266 transitions. [2023-11-22 17:15:23,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:23,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:23,710 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:23,710 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 96 flow. Second operand 7 states and 266 transitions. [2023-11-22 17:15:23,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 88 transitions, 334 flow [2023-11-22 17:15:23,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 88 transitions, 324 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-22 17:15:23,712 INFO L231 Difference]: Finished difference. Result has 60 places, 45 transitions, 120 flow [2023-11-22 17:15:23,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=120, PETRI_PLACES=60, PETRI_TRANSITIONS=45} [2023-11-22 17:15:23,713 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -2 predicate places. [2023-11-22 17:15:23,713 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 45 transitions, 120 flow [2023-11-22 17:15:23,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.666666666666668) internal successors, (267), 9 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:23,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:23,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:15:23,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 17:15:23,714 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:23,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:23,714 INFO L85 PathProgramCache]: Analyzing trace with hash -739423112, now seen corresponding path program 1 times [2023-11-22 17:15:23,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:23,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157452719] [2023-11-22 17:15:23,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:23,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:23,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:23,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157452719] [2023-11-22 17:15:23,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157452719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:23,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:23,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 17:15:23,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269093609] [2023-11-22 17:15:23,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:23,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 17:15:23,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:23,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 17:15:23,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 17:15:23,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 57 [2023-11-22 17:15:23,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 45 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:23,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:23,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 57 [2023-11-22 17:15:23,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:24,752 INFO L124 PetriNetUnfolderBase]: 6294/10187 cut-off events. [2023-11-22 17:15:24,752 INFO L125 PetriNetUnfolderBase]: For 1164/1169 co-relation queries the response was YES. [2023-11-22 17:15:24,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20500 conditions, 10187 events. 6294/10187 cut-off events. For 1164/1169 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 72965 event pairs, 3666 based on Foata normal form. 1/9896 useless extension candidates. Maximal degree in co-relation 20485. Up to 6780 conditions per place. [2023-11-22 17:15:24,791 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 46 selfloop transitions, 7 changer transitions 40/109 dead transitions. [2023-11-22 17:15:24,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 109 transitions, 472 flow [2023-11-22 17:15:24,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 17:15:24,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-22 17:15:24,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 292 transitions. [2023-11-22 17:15:24,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2023-11-22 17:15:24,793 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 292 transitions. [2023-11-22 17:15:24,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 292 transitions. [2023-11-22 17:15:24,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:24,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 292 transitions. [2023-11-22 17:15:24,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.5) internal successors, (292), 8 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:24,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:24,795 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:24,795 INFO L175 Difference]: Start difference. First operand has 60 places, 45 transitions, 120 flow. Second operand 8 states and 292 transitions. [2023-11-22 17:15:24,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 109 transitions, 472 flow [2023-11-22 17:15:24,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 109 transitions, 464 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-22 17:15:24,804 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 177 flow [2023-11-22 17:15:24,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=177, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2023-11-22 17:15:24,805 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 6 predicate places. [2023-11-22 17:15:24,805 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 177 flow [2023-11-22 17:15:24,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:24,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:24,806 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] [2023-11-22 17:15:24,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 17:15:24,806 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:24,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:24,807 INFO L85 PathProgramCache]: Analyzing trace with hash -609715741, now seen corresponding path program 1 times [2023-11-22 17:15:24,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:24,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12296233] [2023-11-22 17:15:24,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:24,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:24,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:24,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:24,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12296233] [2023-11-22 17:15:24,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12296233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:24,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:24,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 17:15:24,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120879645] [2023-11-22 17:15:24,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:24,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 17:15:24,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:24,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 17:15:24,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 17:15:24,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 57 [2023-11-22 17:15:24,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:24,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:24,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 57 [2023-11-22 17:15:24,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:25,986 INFO L124 PetriNetUnfolderBase]: 6692/10815 cut-off events. [2023-11-22 17:15:25,986 INFO L125 PetriNetUnfolderBase]: For 10209/10217 co-relation queries the response was YES. [2023-11-22 17:15:26,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27570 conditions, 10815 events. 6692/10815 cut-off events. For 10209/10217 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 75982 event pairs, 955 based on Foata normal form. 260/11039 useless extension candidates. Maximal degree in co-relation 27551. Up to 5403 conditions per place. [2023-11-22 17:15:26,033 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 91 selfloop transitions, 12 changer transitions 5/124 dead transitions. [2023-11-22 17:15:26,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 124 transitions, 677 flow [2023-11-22 17:15:26,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 17:15:26,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-22 17:15:26,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 304 transitions. [2023-11-22 17:15:26,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-22 17:15:26,035 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 304 transitions. [2023-11-22 17:15:26,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 304 transitions. [2023-11-22 17:15:26,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:26,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 304 transitions. [2023-11-22 17:15:26,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:26,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:26,037 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:26,037 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 177 flow. Second operand 8 states and 304 transitions. [2023-11-22 17:15:26,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 124 transitions, 677 flow [2023-11-22 17:15:26,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 124 transitions, 652 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-22 17:15:26,082 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 255 flow [2023-11-22 17:15:26,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=255, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2023-11-22 17:15:26,083 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 9 predicate places. [2023-11-22 17:15:26,083 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 255 flow [2023-11-22 17:15:26,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:26,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:26,083 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] [2023-11-22 17:15:26,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 17:15:26,084 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:26,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:26,084 INFO L85 PathProgramCache]: Analyzing trace with hash -184104612, now seen corresponding path program 1 times [2023-11-22 17:15:26,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:26,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755215168] [2023-11-22 17:15:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:26,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:26,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:26,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:26,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755215168] [2023-11-22 17:15:26,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755215168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:26,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:26,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 17:15:26,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413062505] [2023-11-22 17:15:26,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:26,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 17:15:26,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:26,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 17:15:26,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 17:15:26,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 57 [2023-11-22 17:15:26,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 255 flow. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:26,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:26,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 57 [2023-11-22 17:15:26,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:27,474 INFO L124 PetriNetUnfolderBase]: 8622/13766 cut-off events. [2023-11-22 17:15:27,474 INFO L125 PetriNetUnfolderBase]: For 17968/17982 co-relation queries the response was YES. [2023-11-22 17:15:27,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36954 conditions, 13766 events. 8622/13766 cut-off events. For 17968/17982 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 99789 event pairs, 3835 based on Foata normal form. 223/13962 useless extension candidates. Maximal degree in co-relation 36932. Up to 5511 conditions per place. [2023-11-22 17:15:27,534 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 99 selfloop transitions, 24 changer transitions 5/144 dead transitions. [2023-11-22 17:15:27,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 144 transitions, 914 flow [2023-11-22 17:15:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 17:15:27,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-22 17:15:27,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 304 transitions. [2023-11-22 17:15:27,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-22 17:15:27,536 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 304 transitions. [2023-11-22 17:15:27,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 304 transitions. [2023-11-22 17:15:27,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:27,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 304 transitions. [2023-11-22 17:15:27,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:27,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:27,537 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:27,538 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 255 flow. Second operand 8 states and 304 transitions. [2023-11-22 17:15:27,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 144 transitions, 914 flow [2023-11-22 17:15:27,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 144 transitions, 914 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-22 17:15:27,578 INFO L231 Difference]: Finished difference. Result has 82 places, 75 transitions, 480 flow [2023-11-22 17:15:27,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=480, PETRI_PLACES=82, PETRI_TRANSITIONS=75} [2023-11-22 17:15:27,579 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 20 predicate places. [2023-11-22 17:15:27,579 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 75 transitions, 480 flow [2023-11-22 17:15:27,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:27,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:27,579 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] [2023-11-22 17:15:27,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-22 17:15:27,580 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:27,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:27,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1414524662, now seen corresponding path program 1 times [2023-11-22 17:15:27,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:27,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974558207] [2023-11-22 17:15:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:27,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:27,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:27,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:27,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974558207] [2023-11-22 17:15:27,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974558207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:27,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:27,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 17:15:27,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472035203] [2023-11-22 17:15:27,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:27,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 17:15:27,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:27,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 17:15:27,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-22 17:15:28,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2023-11-22 17:15:28,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 480 flow. Second operand has 9 states, 9 states have (on average 29.666666666666668) internal successors, (267), 9 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:28,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:28,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2023-11-22 17:15:28,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:29,201 INFO L124 PetriNetUnfolderBase]: 4917/9368 cut-off events. [2023-11-22 17:15:29,202 INFO L125 PetriNetUnfolderBase]: For 16425/16590 co-relation queries the response was YES. [2023-11-22 17:15:29,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25812 conditions, 9368 events. 4917/9368 cut-off events. For 16425/16590 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 82339 event pairs, 2370 based on Foata normal form. 205/9336 useless extension candidates. Maximal degree in co-relation 25783. Up to 3187 conditions per place. [2023-11-22 17:15:29,258 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 55 selfloop transitions, 9 changer transitions 30/123 dead transitions. [2023-11-22 17:15:29,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 123 transitions, 864 flow [2023-11-22 17:15:29,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 17:15:29,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-22 17:15:29,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 265 transitions. [2023-11-22 17:15:29,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6641604010025063 [2023-11-22 17:15:29,260 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 265 transitions. [2023-11-22 17:15:29,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 265 transitions. [2023-11-22 17:15:29,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:29,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 265 transitions. [2023-11-22 17:15:29,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 37.857142857142854) internal successors, (265), 7 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:29,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:29,262 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:29,262 INFO L175 Difference]: Start difference. First operand has 82 places, 75 transitions, 480 flow. Second operand 7 states and 265 transitions. [2023-11-22 17:15:29,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 123 transitions, 864 flow [2023-11-22 17:15:29,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 123 transitions, 864 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-22 17:15:29,326 INFO L231 Difference]: Finished difference. Result has 92 places, 65 transitions, 399 flow [2023-11-22 17:15:29,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=399, PETRI_PLACES=92, PETRI_TRANSITIONS=65} [2023-11-22 17:15:29,327 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 30 predicate places. [2023-11-22 17:15:29,327 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 65 transitions, 399 flow [2023-11-22 17:15:29,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.666666666666668) internal successors, (267), 9 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:29,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:29,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:15:29,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-22 17:15:29,328 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:29,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:29,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1267723893, now seen corresponding path program 1 times [2023-11-22 17:15:29,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:29,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285643656] [2023-11-22 17:15:29,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:29,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:29,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:29,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:29,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285643656] [2023-11-22 17:15:29,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285643656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:29,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:29,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 17:15:29,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698794816] [2023-11-22 17:15:29,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:29,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 17:15:29,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:29,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 17:15:29,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-22 17:15:30,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2023-11-22 17:15:30,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 65 transitions, 399 flow. Second operand has 10 states, 10 states have (on average 29.5) internal successors, (295), 10 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:30,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:30,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2023-11-22 17:15:30,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:31,324 INFO L124 PetriNetUnfolderBase]: 6085/11485 cut-off events. [2023-11-22 17:15:31,324 INFO L125 PetriNetUnfolderBase]: For 17070/17545 co-relation queries the response was YES. [2023-11-22 17:15:31,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29122 conditions, 11485 events. 6085/11485 cut-off events. For 17070/17545 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 105549 event pairs, 4157 based on Foata normal form. 108/11205 useless extension candidates. Maximal degree in co-relation 29087. Up to 4936 conditions per place. [2023-11-22 17:15:31,419 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 50 selfloop transitions, 15 changer transitions 17/116 dead transitions. [2023-11-22 17:15:31,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 116 transitions, 835 flow [2023-11-22 17:15:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 17:15:31,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-22 17:15:31,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 288 transitions. [2023-11-22 17:15:31,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2023-11-22 17:15:31,421 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 288 transitions. [2023-11-22 17:15:31,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 288 transitions. [2023-11-22 17:15:31,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:31,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 288 transitions. [2023-11-22 17:15:31,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.0) internal successors, (288), 8 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:31,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:31,423 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:31,423 INFO L175 Difference]: Start difference. First operand has 92 places, 65 transitions, 399 flow. Second operand 8 states and 288 transitions. [2023-11-22 17:15:31,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 116 transitions, 835 flow [2023-11-22 17:15:31,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 116 transitions, 785 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-22 17:15:31,505 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 520 flow [2023-11-22 17:15:31,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=520, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2023-11-22 17:15:31,506 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 33 predicate places. [2023-11-22 17:15:31,507 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 520 flow [2023-11-22 17:15:31,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.5) internal successors, (295), 10 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:31,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:31,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:15:31,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-22 17:15:31,507 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:31,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:31,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1725314887, now seen corresponding path program 2 times [2023-11-22 17:15:31,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:31,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253401961] [2023-11-22 17:15:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:31,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:32,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:32,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:32,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253401961] [2023-11-22 17:15:32,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253401961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:32,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:32,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 17:15:32,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966195461] [2023-11-22 17:15:32,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:32,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 17:15:32,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:32,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 17:15:32,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-22 17:15:32,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2023-11-22 17:15:32,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 520 flow. Second operand has 9 states, 9 states have (on average 29.666666666666668) internal successors, (267), 9 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:32,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:32,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2023-11-22 17:15:32,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:34,034 INFO L124 PetriNetUnfolderBase]: 8866/17388 cut-off events. [2023-11-22 17:15:34,034 INFO L125 PetriNetUnfolderBase]: For 27185/28266 co-relation queries the response was YES. [2023-11-22 17:15:34,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48189 conditions, 17388 events. 8866/17388 cut-off events. For 27185/28266 co-relation queries the response was YES. Maximal size of possible extension queue 1239. Compared 174858 event pairs, 6257 based on Foata normal form. 123/16971 useless extension candidates. Maximal degree in co-relation 48151. Up to 8976 conditions per place. [2023-11-22 17:15:34,198 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 64 selfloop transitions, 23 changer transitions 17/138 dead transitions. [2023-11-22 17:15:34,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 138 transitions, 1101 flow [2023-11-22 17:15:34,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 17:15:34,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-22 17:15:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 323 transitions. [2023-11-22 17:15:34,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2023-11-22 17:15:34,200 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 323 transitions. [2023-11-22 17:15:34,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 323 transitions. [2023-11-22 17:15:34,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:34,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 323 transitions. [2023-11-22 17:15:34,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.888888888888886) internal successors, (323), 9 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:34,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:34,202 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:34,202 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 520 flow. Second operand 9 states and 323 transitions. [2023-11-22 17:15:34,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 138 transitions, 1101 flow [2023-11-22 17:15:34,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 138 transitions, 1099 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-22 17:15:34,527 INFO L231 Difference]: Finished difference. Result has 106 places, 100 transitions, 762 flow [2023-11-22 17:15:34,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=762, PETRI_PLACES=106, PETRI_TRANSITIONS=100} [2023-11-22 17:15:34,528 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 44 predicate places. [2023-11-22 17:15:34,528 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 100 transitions, 762 flow [2023-11-22 17:15:34,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.666666666666668) internal successors, (267), 9 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:34,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:34,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:15:34,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 17:15:34,529 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:34,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:34,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1540805255, now seen corresponding path program 3 times [2023-11-22 17:15:34,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:34,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206946245] [2023-11-22 17:15:34,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:34,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:35,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:35,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:35,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206946245] [2023-11-22 17:15:35,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206946245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:35,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:35,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 17:15:35,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518690906] [2023-11-22 17:15:35,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:35,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 17:15:35,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:35,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 17:15:35,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-22 17:15:35,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 57 [2023-11-22 17:15:35,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 100 transitions, 762 flow. Second operand has 10 states, 10 states have (on average 28.5) internal successors, (285), 10 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:35,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:35,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 57 [2023-11-22 17:15:35,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:37,425 INFO L124 PetriNetUnfolderBase]: 10581/20880 cut-off events. [2023-11-22 17:15:37,425 INFO L125 PetriNetUnfolderBase]: For 45555/46763 co-relation queries the response was YES. [2023-11-22 17:15:37,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62711 conditions, 20880 events. 10581/20880 cut-off events. For 45555/46763 co-relation queries the response was YES. Maximal size of possible extension queue 1469. Compared 216911 event pairs, 7660 based on Foata normal form. 148/20340 useless extension candidates. Maximal degree in co-relation 62667. Up to 8708 conditions per place. [2023-11-22 17:15:37,595 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 67 selfloop transitions, 25 changer transitions 17/143 dead transitions. [2023-11-22 17:15:37,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 143 transitions, 1282 flow [2023-11-22 17:15:37,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 17:15:37,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-22 17:15:37,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 284 transitions. [2023-11-22 17:15:37,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2023-11-22 17:15:37,597 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 284 transitions. [2023-11-22 17:15:37,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 284 transitions. [2023-11-22 17:15:37,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:37,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 284 transitions. [2023-11-22 17:15:37,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.5) internal successors, (284), 8 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:37,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:37,599 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:37,599 INFO L175 Difference]: Start difference. First operand has 106 places, 100 transitions, 762 flow. Second operand 8 states and 284 transitions. [2023-11-22 17:15:37,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 143 transitions, 1282 flow [2023-11-22 17:15:37,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 143 transitions, 1227 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-11-22 17:15:37,809 INFO L231 Difference]: Finished difference. Result has 113 places, 103 transitions, 819 flow [2023-11-22 17:15:37,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=819, PETRI_PLACES=113, PETRI_TRANSITIONS=103} [2023-11-22 17:15:37,809 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 51 predicate places. [2023-11-22 17:15:37,809 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 103 transitions, 819 flow [2023-11-22 17:15:37,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 28.5) internal successors, (285), 10 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:37,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:37,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:15:37,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-22 17:15:37,810 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:37,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:37,811 INFO L85 PathProgramCache]: Analyzing trace with hash -34025247, now seen corresponding path program 1 times [2023-11-22 17:15:37,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:37,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446921210] [2023-11-22 17:15:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:37,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:37,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:37,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446921210] [2023-11-22 17:15:37,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446921210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:37,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:37,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 17:15:37,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608506833] [2023-11-22 17:15:37,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:37,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 17:15:37,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:37,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 17:15:37,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 17:15:37,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 57 [2023-11-22 17:15:37,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 103 transitions, 819 flow. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:37,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:37,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 57 [2023-11-22 17:15:37,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:41,111 INFO L124 PetriNetUnfolderBase]: 18007/31114 cut-off events. [2023-11-22 17:15:41,111 INFO L125 PetriNetUnfolderBase]: For 84710/85965 co-relation queries the response was YES. [2023-11-22 17:15:41,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103773 conditions, 31114 events. 18007/31114 cut-off events. For 84710/85965 co-relation queries the response was YES. Maximal size of possible extension queue 2113. Compared 297630 event pairs, 6732 based on Foata normal form. 355/31156 useless extension candidates. Maximal degree in co-relation 103727. Up to 16738 conditions per place. [2023-11-22 17:15:41,391 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 92 selfloop transitions, 10 changer transitions 95/225 dead transitions. [2023-11-22 17:15:41,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 225 transitions, 2021 flow [2023-11-22 17:15:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 17:15:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-22 17:15:41,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 308 transitions. [2023-11-22 17:15:41,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6754385964912281 [2023-11-22 17:15:41,393 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 308 transitions. [2023-11-22 17:15:41,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 308 transitions. [2023-11-22 17:15:41,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:41,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 308 transitions. [2023-11-22 17:15:41,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 38.5) internal successors, (308), 8 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:41,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:41,395 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:41,395 INFO L175 Difference]: Start difference. First operand has 113 places, 103 transitions, 819 flow. Second operand 8 states and 308 transitions. [2023-11-22 17:15:41,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 225 transitions, 2021 flow [2023-11-22 17:15:41,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 225 transitions, 1897 flow, removed 36 selfloop flow, removed 6 redundant places. [2023-11-22 17:15:41,948 INFO L231 Difference]: Finished difference. Result has 118 places, 101 transitions, 790 flow [2023-11-22 17:15:41,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=790, PETRI_PLACES=118, PETRI_TRANSITIONS=101} [2023-11-22 17:15:41,949 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 56 predicate places. [2023-11-22 17:15:41,949 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 101 transitions, 790 flow [2023-11-22 17:15:41,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:41,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:41,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:15:41,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-22 17:15:41,950 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:41,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:41,950 INFO L85 PathProgramCache]: Analyzing trace with hash 268866964, now seen corresponding path program 1 times [2023-11-22 17:15:41,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:41,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436433035] [2023-11-22 17:15:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:41,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:42,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:42,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:42,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436433035] [2023-11-22 17:15:42,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436433035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:42,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:42,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 17:15:42,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422413246] [2023-11-22 17:15:42,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:42,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 17:15:42,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:42,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 17:15:42,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-22 17:15:42,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 57 [2023-11-22 17:15:42,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 101 transitions, 790 flow. Second operand has 9 states, 9 states have (on average 28.77777777777778) internal successors, (259), 9 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:42,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:42,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 57 [2023-11-22 17:15:42,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:44,800 INFO L124 PetriNetUnfolderBase]: 10128/19926 cut-off events. [2023-11-22 17:15:44,800 INFO L125 PetriNetUnfolderBase]: For 62094/63643 co-relation queries the response was YES. [2023-11-22 17:15:44,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63991 conditions, 19926 events. 10128/19926 cut-off events. For 62094/63643 co-relation queries the response was YES. Maximal size of possible extension queue 1360. Compared 203907 event pairs, 7667 based on Foata normal form. 111/19444 useless extension candidates. Maximal degree in co-relation 63941. Up to 13743 conditions per place. [2023-11-22 17:15:44,993 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 63 selfloop transitions, 30 changer transitions 12/137 dead transitions. [2023-11-22 17:15:44,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 137 transitions, 1252 flow [2023-11-22 17:15:44,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 17:15:44,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-22 17:15:44,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 282 transitions. [2023-11-22 17:15:44,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2023-11-22 17:15:44,995 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 282 transitions. [2023-11-22 17:15:44,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 282 transitions. [2023-11-22 17:15:44,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:44,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 282 transitions. [2023-11-22 17:15:44,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.25) internal successors, (282), 8 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:44,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:44,997 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:44,997 INFO L175 Difference]: Start difference. First operand has 118 places, 101 transitions, 790 flow. Second operand 8 states and 282 transitions. [2023-11-22 17:15:44,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 137 transitions, 1252 flow [2023-11-22 17:15:45,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 137 transitions, 1119 flow, removed 38 selfloop flow, removed 10 redundant places. [2023-11-22 17:15:45,627 INFO L231 Difference]: Finished difference. Result has 113 places, 103 transitions, 819 flow [2023-11-22 17:15:45,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=819, PETRI_PLACES=113, PETRI_TRANSITIONS=103} [2023-11-22 17:15:45,628 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 51 predicate places. [2023-11-22 17:15:45,628 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 103 transitions, 819 flow [2023-11-22 17:15:45,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.77777777777778) internal successors, (259), 9 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:45,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:45,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:15:45,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-22 17:15:45,628 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:45,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:45,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1024441810, now seen corresponding path program 2 times [2023-11-22 17:15:45,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:45,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751724400] [2023-11-22 17:15:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:45,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:46,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:46,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751724400] [2023-11-22 17:15:46,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751724400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:46,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:46,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 17:15:46,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119305104] [2023-11-22 17:15:46,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:46,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 17:15:46,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:46,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 17:15:46,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-22 17:15:46,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2023-11-22 17:15:46,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 103 transitions, 819 flow. Second operand has 10 states, 10 states have (on average 29.6) internal successors, (296), 10 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:46,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:46,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2023-11-22 17:15:46,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:48,217 INFO L124 PetriNetUnfolderBase]: 9919/19602 cut-off events. [2023-11-22 17:15:48,217 INFO L125 PetriNetUnfolderBase]: For 34512/36096 co-relation queries the response was YES. [2023-11-22 17:15:48,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55006 conditions, 19602 events. 9919/19602 cut-off events. For 34512/36096 co-relation queries the response was YES. Maximal size of possible extension queue 1342. Compared 200476 event pairs, 7304 based on Foata normal form. 86/19085 useless extension candidates. Maximal degree in co-relation 54974. Up to 14866 conditions per place. [2023-11-22 17:15:48,453 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 45 selfloop transitions, 26 changer transitions 13/114 dead transitions. [2023-11-22 17:15:48,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 114 transitions, 1033 flow [2023-11-22 17:15:48,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 17:15:48,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-22 17:15:48,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 263 transitions. [2023-11-22 17:15:48,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5767543859649122 [2023-11-22 17:15:48,478 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 263 transitions. [2023-11-22 17:15:48,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 263 transitions. [2023-11-22 17:15:48,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:48,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 263 transitions. [2023-11-22 17:15:48,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 32.875) internal successors, (263), 8 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:48,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:48,480 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:48,480 INFO L175 Difference]: Start difference. First operand has 113 places, 103 transitions, 819 flow. Second operand 8 states and 263 transitions. [2023-11-22 17:15:48,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 114 transitions, 1033 flow [2023-11-22 17:15:48,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 114 transitions, 965 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-11-22 17:15:48,661 INFO L231 Difference]: Finished difference. Result has 111 places, 95 transitions, 740 flow [2023-11-22 17:15:48,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=740, PETRI_PLACES=111, PETRI_TRANSITIONS=95} [2023-11-22 17:15:48,661 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 49 predicate places. [2023-11-22 17:15:48,661 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 95 transitions, 740 flow [2023-11-22 17:15:48,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.6) internal successors, (296), 10 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:48,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:48,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:15:48,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-22 17:15:48,662 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:48,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:48,662 INFO L85 PathProgramCache]: Analyzing trace with hash -41917828, now seen corresponding path program 1 times [2023-11-22 17:15:48,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:48,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738656990] [2023-11-22 17:15:48,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:48,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:48,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:48,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:48,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738656990] [2023-11-22 17:15:48,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738656990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:48,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:48,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 17:15:48,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831361846] [2023-11-22 17:15:48,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:48,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 17:15:48,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:48,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 17:15:48,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 17:15:48,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2023-11-22 17:15:48,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 95 transitions, 740 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:48,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:48,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2023-11-22 17:15:48,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:15:52,533 INFO L124 PetriNetUnfolderBase]: 22427/39490 cut-off events. [2023-11-22 17:15:52,534 INFO L125 PetriNetUnfolderBase]: For 47282/49186 co-relation queries the response was YES. [2023-11-22 17:15:52,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105105 conditions, 39490 events. 22427/39490 cut-off events. For 47282/49186 co-relation queries the response was YES. Maximal size of possible extension queue 2112. Compared 378210 event pairs, 2220 based on Foata normal form. 1609/40587 useless extension candidates. Maximal degree in co-relation 105076. Up to 21136 conditions per place. [2023-11-22 17:15:52,921 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 96 selfloop transitions, 5 changer transitions 0/130 dead transitions. [2023-11-22 17:15:52,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 130 transitions, 1153 flow [2023-11-22 17:15:52,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 17:15:52,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-22 17:15:52,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2023-11-22 17:15:52,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7105263157894737 [2023-11-22 17:15:52,923 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 162 transitions. [2023-11-22 17:15:52,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 162 transitions. [2023-11-22 17:15:52,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:15:52,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 162 transitions. [2023-11-22 17:15:52,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:52,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:52,924 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:52,924 INFO L175 Difference]: Start difference. First operand has 111 places, 95 transitions, 740 flow. Second operand 4 states and 162 transitions. [2023-11-22 17:15:52,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 130 transitions, 1153 flow [2023-11-22 17:15:53,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 130 transitions, 1062 flow, removed 12 selfloop flow, removed 12 redundant places. [2023-11-22 17:15:53,867 INFO L231 Difference]: Finished difference. Result has 100 places, 99 transitions, 700 flow [2023-11-22 17:15:53,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=700, PETRI_PLACES=100, PETRI_TRANSITIONS=99} [2023-11-22 17:15:53,868 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 38 predicate places. [2023-11-22 17:15:53,868 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 99 transitions, 700 flow [2023-11-22 17:15:53,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:53,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:15:53,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:15:53,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-22 17:15:53,869 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:15:53,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:15:53,869 INFO L85 PathProgramCache]: Analyzing trace with hash 132025485, now seen corresponding path program 1 times [2023-11-22 17:15:53,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:15:53,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16041687] [2023-11-22 17:15:53,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:15:53,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:15:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:15:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:15:53,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:15:53,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16041687] [2023-11-22 17:15:53,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16041687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:15:53,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:15:53,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 17:15:53,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589839089] [2023-11-22 17:15:53,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:15:53,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 17:15:53,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:15:53,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 17:15:53,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 17:15:53,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 57 [2023-11-22 17:15:53,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 99 transitions, 700 flow. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:15:53,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:15:53,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 57 [2023-11-22 17:15:53,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 17:16:03,605 INFO L124 PetriNetUnfolderBase]: 54542/93788 cut-off events. [2023-11-22 17:16:03,605 INFO L125 PetriNetUnfolderBase]: For 101433/103466 co-relation queries the response was YES. [2023-11-22 17:16:04,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264807 conditions, 93788 events. 54542/93788 cut-off events. For 101433/103466 co-relation queries the response was YES. Maximal size of possible extension queue 4861. Compared 958345 event pairs, 20833 based on Foata normal form. 1884/91481 useless extension candidates. Maximal degree in co-relation 264783. Up to 40298 conditions per place. [2023-11-22 17:16:04,246 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 198 selfloop transitions, 36 changer transitions 10/263 dead transitions. [2023-11-22 17:16:04,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 263 transitions, 2137 flow [2023-11-22 17:16:04,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 17:16:04,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-22 17:16:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 392 transitions. [2023-11-22 17:16:04,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6251993620414673 [2023-11-22 17:16:04,248 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 392 transitions. [2023-11-22 17:16:04,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 392 transitions. [2023-11-22 17:16:04,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 17:16:04,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 392 transitions. [2023-11-22 17:16:04,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 35.63636363636363) internal successors, (392), 11 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:16:04,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 57.0) internal successors, (684), 12 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:16:04,250 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 57.0) internal successors, (684), 12 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:16:04,251 INFO L175 Difference]: Start difference. First operand has 100 places, 99 transitions, 700 flow. Second operand 11 states and 392 transitions. [2023-11-22 17:16:04,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 263 transitions, 2137 flow [2023-11-22 17:16:04,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 263 transitions, 2135 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-22 17:16:04,394 INFO L231 Difference]: Finished difference. Result has 116 places, 128 transitions, 1017 flow [2023-11-22 17:16:04,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1017, PETRI_PLACES=116, PETRI_TRANSITIONS=128} [2023-11-22 17:16:04,395 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 54 predicate places. [2023-11-22 17:16:04,395 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 128 transitions, 1017 flow [2023-11-22 17:16:04,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:16:04,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 17:16:04,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 17:16:04,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-22 17:16:04,396 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-22 17:16:04,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 17:16:04,396 INFO L85 PathProgramCache]: Analyzing trace with hash -47919261, now seen corresponding path program 2 times [2023-11-22 17:16:04,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 17:16:04,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462488474] [2023-11-22 17:16:04,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 17:16:04,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 17:16:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 17:16:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 17:16:04,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 17:16:04,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462488474] [2023-11-22 17:16:04,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462488474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 17:16:04,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 17:16:04,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 17:16:04,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513431896] [2023-11-22 17:16:04,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 17:16:04,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 17:16:04,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 17:16:04,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 17:16:04,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 17:16:04,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2023-11-22 17:16:04,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 128 transitions, 1017 flow. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 17:16:04,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 17:16:04,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2023-11-22 17:16:04,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand