./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/safe027_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/pthread-wmm/safe027_power.opt.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 3edc5a2d9ce2881b3565fd36253c94b9cf356a0dafd043fa3f9d27823541c09b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:32:42,576 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:32:42,642 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:32:42,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:32:42,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:32:42,683 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:32:42,683 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:32:42,684 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:32:42,684 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:32:42,684 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:32:42,684 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:32:42,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:32:42,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:32:42,685 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:32:42,685 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:32:42,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:32:42,687 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:32:42,687 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:32:42,687 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:32:42,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:32:42,687 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:32:42,688 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:32:42,688 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:32:42,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:32:42,692 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:32:42,692 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:32:42,692 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:32:42,692 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:32:42,692 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:32:42,693 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:32:42,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:32:42,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:32:42,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:32:42,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:32:42,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:32:42,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:32:42,694 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:32:42,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:32:42,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:32:42,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:32:42,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:32:42,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:32:42,695 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3edc5a2d9ce2881b3565fd36253c94b9cf356a0dafd043fa3f9d27823541c09b [2024-11-22 21:32:42,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:32:42,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:32:42,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:32:42,921 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:32:42,921 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:32:42,922 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_power.opt.i [2024-11-22 21:32:44,380 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:32:44,609 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:32:44,610 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_power.opt.i [2024-11-22 21:32:44,625 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/660ca0656/0ddb794d4f6c4e43918e78a491ce49e1/FLAGb96d61dbf [2024-11-22 21:32:44,979 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/660ca0656/0ddb794d4f6c4e43918e78a491ce49e1 [2024-11-22 21:32:44,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:32:44,983 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:32:44,986 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:32:44,986 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:32:44,992 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:32:44,993 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:32:44" (1/1) ... [2024-11-22 21:32:44,994 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bbf8ecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:32:44, skipping insertion in model container [2024-11-22 21:32:44,994 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:32:44" (1/1) ... [2024-11-22 21:32:45,048 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:32:45,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:32:45,434 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:32:45,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:32:45,545 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:32:45,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:32:45 WrapperNode [2024-11-22 21:32:45,546 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:32:45,547 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:32:45,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:32:45,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:32:45,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:32:45" (1/1) ... [2024-11-22 21:32:45,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:32:45" (1/1) ... [2024-11-22 21:32:45,604 INFO L138 Inliner]: procedures = 176, calls = 73, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 183 [2024-11-22 21:32:45,606 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:32:45,607 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:32:45,607 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:32:45,608 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:32:45,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:32:45" (1/1) ... [2024-11-22 21:32:45,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:32:45" (1/1) ... [2024-11-22 21:32:45,621 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:32:45" (1/1) ... [2024-11-22 21:32:45,651 INFO L175 MemorySlicer]: Split 26 memory accesses to 2 slices as follows [2, 24]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 8 writes are split as follows [0, 8]. [2024-11-22 21:32:45,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:32:45" (1/1) ... [2024-11-22 21:32:45,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:32:45" (1/1) ... [2024-11-22 21:32:45,664 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:32:45" (1/1) ... [2024-11-22 21:32:45,674 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:32:45" (1/1) ... [2024-11-22 21:32:45,676 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:32:45" (1/1) ... [2024-11-22 21:32:45,679 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:32:45" (1/1) ... [2024-11-22 21:32:45,705 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:32:45,706 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:32:45,706 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:32:45,706 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:32:45,707 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:32:45" (1/1) ... [2024-11-22 21:32:45,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:32:45,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:32:45,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 21:32:45,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 21:32:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 21:32:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 21:32:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 21:32:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 21:32:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 21:32:45,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:32:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-22 21:32:45,770 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-22 21:32:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-22 21:32:45,770 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-22 21:32:45,770 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-22 21:32:45,774 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-22 21:32:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-22 21:32:45,774 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-22 21:32:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:32:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 21:32:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 21:32:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:32:45,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:32:45,776 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:32:45,888 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:32:45,890 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:32:46,628 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:32:46,628 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:32:47,190 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:32:47,191 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 21:32:47,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:32:47 BoogieIcfgContainer [2024-11-22 21:32:47,192 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:32:47,193 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:32:47,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:32:47,196 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:32:47,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:32:44" (1/3) ... [2024-11-22 21:32:47,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4daa05bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:32:47, skipping insertion in model container [2024-11-22 21:32:47,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:32:45" (2/3) ... [2024-11-22 21:32:47,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4daa05bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:32:47, skipping insertion in model container [2024-11-22 21:32:47,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:32:47" (3/3) ... [2024-11-22 21:32:47,200 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_power.opt.i [2024-11-22 21:32:47,214 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:32:47,214 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2024-11-22 21:32:47,214 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:32:47,358 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 21:32:47,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 97 transitions, 210 flow [2024-11-22 21:32:47,427 INFO L124 PetriNetUnfolderBase]: 2/93 cut-off events. [2024-11-22 21:32:47,428 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:32:47,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 394 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2024-11-22 21:32:47,435 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 97 transitions, 210 flow [2024-11-22 21:32:47,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 93 transitions, 198 flow [2024-11-22 21:32:47,452 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:32:47,459 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@73ba6f88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:32:47,459 INFO L334 AbstractCegarLoop]: Starting to check reachability of 94 error locations. [2024-11-22 21:32:47,464 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:32:47,464 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-22 21:32:47,464 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:32:47,464 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:32:47,465 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 21:32:47,465 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-22 21:32:47,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:32:47,469 INFO L85 PathProgramCache]: Analyzing trace with hash 980986844, now seen corresponding path program 1 times [2024-11-22 21:32:47,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:32:47,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954727452] [2024-11-22 21:32:47,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:32:47,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:32:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:32:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:32:47,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:32:47,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954727452] [2024-11-22 21:32:47,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954727452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:32:47,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:32:47,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:32:47,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509605319] [2024-11-22 21:32:47,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:32:47,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:32:47,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:32:47,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:32:47,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:32:47,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-11-22 21:32:47,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 93 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:32:47,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:32:47,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-11-22 21:32:47,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:32:55,860 INFO L124 PetriNetUnfolderBase]: 41670/60435 cut-off events. [2024-11-22 21:32:55,860 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-22 21:32:56,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115766 conditions, 60435 events. 41670/60435 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3712. Compared 491337 event pairs, 41670 based on Foata normal form. 1960/38305 useless extension candidates. Maximal degree in co-relation 115754. Up to 54867 conditions per place. [2024-11-22 21:32:56,675 INFO L140 encePairwiseOnDemand]: 60/97 looper letters, 38 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2024-11-22 21:32:56,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 56 transitions, 202 flow [2024-11-22 21:32:56,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:32:56,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:32:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-11-22 21:32:56,688 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4742268041237113 [2024-11-22 21:32:56,689 INFO L175 Difference]: Start difference. First operand has 104 places, 93 transitions, 198 flow. Second operand 3 states and 138 transitions. [2024-11-22 21:32:56,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 56 transitions, 202 flow [2024-11-22 21:32:56,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 56 transitions, 198 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:32:56,712 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 122 flow [2024-11-22 21:32:56,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-11-22 21:32:56,717 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -37 predicate places. [2024-11-22 21:32:56,717 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 122 flow [2024-11-22 21:32:56,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:32:56,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:32:56,718 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 21:32:56,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:32:56,718 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-22 21:32:56,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:32:56,719 INFO L85 PathProgramCache]: Analyzing trace with hash 980986845, now seen corresponding path program 1 times [2024-11-22 21:32:56,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:32:56,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241713910] [2024-11-22 21:32:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:32:56,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:32:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:32:56,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:32:56,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:32:56,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241713910] [2024-11-22 21:32:56,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241713910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:32:56,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:32:56,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:32:56,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105672345] [2024-11-22 21:32:56,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:32:56,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:32:56,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:32:56,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:32:56,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:32:56,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-11-22 21:32:56,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:32:56,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:32:56,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-11-22 21:32:56,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:32:58,592 INFO L124 PetriNetUnfolderBase]: 5844/9113 cut-off events. [2024-11-22 21:32:58,592 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:32:58,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17256 conditions, 9113 events. 5844/9113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 64985 event pairs, 5844 based on Foata normal form. 0/8156 useless extension candidates. Maximal degree in co-relation 17250. Up to 7981 conditions per place. [2024-11-22 21:32:58,662 INFO L140 encePairwiseOnDemand]: 86/97 looper letters, 28 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2024-11-22 21:32:58,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 46 transitions, 160 flow [2024-11-22 21:32:58,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:32:58,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:32:58,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-22 21:32:58,664 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35051546391752575 [2024-11-22 21:32:58,664 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 122 flow. Second operand 3 states and 102 transitions. [2024-11-22 21:32:58,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 46 transitions, 160 flow [2024-11-22 21:32:58,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 46 transitions, 159 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:32:58,665 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 103 flow [2024-11-22 21:32:58,665 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2024-11-22 21:32:58,666 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -46 predicate places. [2024-11-22 21:32:58,668 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 103 flow [2024-11-22 21:32:58,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:32:58,668 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:32:58,668 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 21:32:58,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:32:58,669 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-22 21:32:58,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:32:58,670 INFO L85 PathProgramCache]: Analyzing trace with hash 343889124, now seen corresponding path program 1 times [2024-11-22 21:32:58,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:32:58,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625735838] [2024-11-22 21:32:58,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:32:58,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:32:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:32:58,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:32:58,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:32:58,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625735838] [2024-11-22 21:32:58,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625735838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:32:58,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:32:58,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:32:58,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463682222] [2024-11-22 21:32:58,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:32:58,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:32:58,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:32:58,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:32:58,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:32:58,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-11-22 21:32:58,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:32:58,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:32:58,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-11-22 21:32:58,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:32:59,998 INFO L124 PetriNetUnfolderBase]: 4591/7092 cut-off events. [2024-11-22 21:32:59,998 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:33:00,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13527 conditions, 7092 events. 4591/7092 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 47575 event pairs, 1360 based on Foata normal form. 0/6756 useless extension candidates. Maximal degree in co-relation 13520. Up to 5038 conditions per place. [2024-11-22 21:33:00,021 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 45 selfloop transitions, 2 changer transitions 2/66 dead transitions. [2024-11-22 21:33:00,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 245 flow [2024-11-22 21:33:00,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:33:00,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:33:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-22 21:33:00,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38831615120274915 [2024-11-22 21:33:00,023 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 103 flow. Second operand 3 states and 113 transitions. [2024-11-22 21:33:00,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 245 flow [2024-11-22 21:33:00,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:33:00,024 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 102 flow [2024-11-22 21:33:00,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-11-22 21:33:00,025 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -46 predicate places. [2024-11-22 21:33:00,025 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 102 flow [2024-11-22 21:33:00,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:33:00,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:33:00,025 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:33:00,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:33:00,026 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-22 21:33:00,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:33:00,026 INFO L85 PathProgramCache]: Analyzing trace with hash -2128680646, now seen corresponding path program 1 times [2024-11-22 21:33:00,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:33:00,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303966410] [2024-11-22 21:33:00,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:33:00,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:33:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:33:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:33:00,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:33:00,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303966410] [2024-11-22 21:33:00,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303966410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:33:00,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:33:00,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:33:00,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900964979] [2024-11-22 21:33:00,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:33:00,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:33:00,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:33:00,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:33:00,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:33:00,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-11-22 21:33:00,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:33:00,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:33:00,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-11-22 21:33:00,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:33:00,883 INFO L124 PetriNetUnfolderBase]: 3961/6222 cut-off events. [2024-11-22 21:33:00,883 INFO L125 PetriNetUnfolderBase]: For 372/372 co-relation queries the response was YES. [2024-11-22 21:33:00,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12184 conditions, 6222 events. 3961/6222 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 41240 event pairs, 1309 based on Foata normal form. 0/5967 useless extension candidates. Maximal degree in co-relation 12176. Up to 4477 conditions per place. [2024-11-22 21:33:00,922 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 41 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-11-22 21:33:00,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 224 flow [2024-11-22 21:33:00,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:33:00,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:33:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-11-22 21:33:00,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3711340206185567 [2024-11-22 21:33:00,925 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 102 flow. Second operand 3 states and 108 transitions. [2024-11-22 21:33:00,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 224 flow [2024-11-22 21:33:00,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:33:00,928 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 108 flow [2024-11-22 21:33:00,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, 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=108, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-11-22 21:33:00,929 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -46 predicate places. [2024-11-22 21:33:00,929 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 108 flow [2024-11-22 21:33:00,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:33:00,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:33:00,930 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:33:00,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:33:00,930 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-22 21:33:00,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:33:00,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1257550359, now seen corresponding path program 1 times [2024-11-22 21:33:00,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:33:00,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311180179] [2024-11-22 21:33:00,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:33:00,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:33:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:33:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:33:01,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:33:01,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311180179] [2024-11-22 21:33:01,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311180179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:33:01,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:33:01,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:33:01,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39552439] [2024-11-22 21:33:01,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:33:01,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:33:01,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:33:01,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:33:01,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:33:01,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-11-22 21:33:01,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 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) [2024-11-22 21:33:01,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:33:01,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-11-22 21:33:01,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:33:02,259 INFO L124 PetriNetUnfolderBase]: 3664/5817 cut-off events. [2024-11-22 21:33:02,260 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2024-11-22 21:33:02,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11735 conditions, 5817 events. 3664/5817 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 38526 event pairs, 1165 based on Foata normal form. 0/5778 useless extension candidates. Maximal degree in co-relation 11726. Up to 4071 conditions per place. [2024-11-22 21:33:02,295 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 40 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-11-22 21:33:02,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 222 flow [2024-11-22 21:33:02,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:33:02,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:33:02,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-11-22 21:33:02,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.327319587628866 [2024-11-22 21:33:02,297 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 108 flow. Second operand 4 states and 127 transitions. [2024-11-22 21:33:02,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 222 flow [2024-11-22 21:33:02,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:33:02,300 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 104 flow [2024-11-22 21:33:02,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, 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=4, PETRI_FLOW=104, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2024-11-22 21:33:02,303 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -46 predicate places. [2024-11-22 21:33:02,304 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 104 flow [2024-11-22 21:33:02,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 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) [2024-11-22 21:33:02,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:33:02,306 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:33:02,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:33:02,306 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-22 21:33:02,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:33:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1257550358, now seen corresponding path program 1 times [2024-11-22 21:33:02,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:33:02,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795415797] [2024-11-22 21:33:02,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:33:02,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:33:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:33:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:33:02,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:33:02,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795415797] [2024-11-22 21:33:02,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795415797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:33:02,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:33:02,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:33:02,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294475434] [2024-11-22 21:33:02,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:33:02,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:33:02,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:33:02,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:33:02,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:33:02,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-11-22 21:33:02,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 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) [2024-11-22 21:33:02,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:33:02,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-11-22 21:33:02,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:33:03,678 INFO L124 PetriNetUnfolderBase]: 3367/5412 cut-off events. [2024-11-22 21:33:03,679 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2024-11-22 21:33:03,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10817 conditions, 5412 events. 3367/5412 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 35645 event pairs, 1021 based on Foata normal form. 108/5481 useless extension candidates. Maximal degree in co-relation 10808. Up to 3666 conditions per place. [2024-11-22 21:33:03,710 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 39 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-11-22 21:33:03,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 216 flow [2024-11-22 21:33:03,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:33:03,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:33:03,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-11-22 21:33:03,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3247422680412371 [2024-11-22 21:33:03,715 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 104 flow. Second operand 4 states and 126 transitions. [2024-11-22 21:33:03,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 216 flow [2024-11-22 21:33:03,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 211 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:33:03,717 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 99 flow [2024-11-22 21:33:03,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2024-11-22 21:33:03,719 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -47 predicate places. [2024-11-22 21:33:03,719 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 99 flow [2024-11-22 21:33:03,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 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) [2024-11-22 21:33:03,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:33:03,720 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:33:03,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 21:33:03,720 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-22 21:33:03,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:33:03,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1699449141, now seen corresponding path program 1 times [2024-11-22 21:33:03,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:33:03,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259123011] [2024-11-22 21:33:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:33:03,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:33:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:33:03,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:33:03,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:33:03,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259123011] [2024-11-22 21:33:03,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259123011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:33:03,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:33:03,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:33:03,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133812056] [2024-11-22 21:33:03,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:33:03,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:33:03,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:33:03,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:33:03,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:33:03,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 97 [2024-11-22 21:33:03,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:33:03,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:33:03,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 97 [2024-11-22 21:33:03,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:33:04,903 INFO L124 PetriNetUnfolderBase]: 3367/5409 cut-off events. [2024-11-22 21:33:04,903 INFO L125 PetriNetUnfolderBase]: For 312/312 co-relation queries the response was YES. [2024-11-22 21:33:04,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10813 conditions, 5409 events. 3367/5409 cut-off events. For 312/312 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 36945 event pairs, 3367 based on Foata normal form. 144/5415 useless extension candidates. Maximal degree in co-relation 10805. Up to 4646 conditions per place. [2024-11-22 21:33:04,930 INFO L140 encePairwiseOnDemand]: 95/97 looper letters, 23 selfloop transitions, 1 changer transitions 1/41 dead transitions. [2024-11-22 21:33:04,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 41 transitions, 147 flow [2024-11-22 21:33:04,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:33:04,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:33:04,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-11-22 21:33:04,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29553264604810997 [2024-11-22 21:33:04,931 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 99 flow. Second operand 3 states and 86 transitions. [2024-11-22 21:33:04,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 41 transitions, 147 flow [2024-11-22 21:33:04,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 41 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:33:04,933 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 94 flow [2024-11-22 21:33:04,933 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-11-22 21:33:04,934 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -48 predicate places. [2024-11-22 21:33:04,934 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 94 flow [2024-11-22 21:33:04,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:33:04,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:33:04,934 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:33:04,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:33:04,935 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-22 21:33:04,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:33:04,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1699450990, now seen corresponding path program 1 times [2024-11-22 21:33:04,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:33:04,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808850982] [2024-11-22 21:33:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:33:04,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:33:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:33:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:33:05,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:33:05,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808850982] [2024-11-22 21:33:05,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808850982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:33:05,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:33:05,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:33:05,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957246723] [2024-11-22 21:33:05,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:33:05,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:33:05,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:33:05,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:33:05,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:33:05,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 97 [2024-11-22 21:33:05,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:33:05,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:33:05,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 97 [2024-11-22 21:33:05,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:33:07,229 INFO L124 PetriNetUnfolderBase]: 5559/8770 cut-off events. [2024-11-22 21:33:07,230 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:33:07,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17618 conditions, 8770 events. 5559/8770 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 59483 event pairs, 1255 based on Foata normal form. 0/8549 useless extension candidates. Maximal degree in co-relation 17610. Up to 4327 conditions per place. [2024-11-22 21:33:07,274 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 40 selfloop transitions, 2 changer transitions 54/110 dead transitions. [2024-11-22 21:33:07,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 110 transitions, 444 flow [2024-11-22 21:33:07,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 21:33:07,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 21:33:07,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-11-22 21:33:07,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32216494845360827 [2024-11-22 21:33:07,279 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 94 flow. Second operand 8 states and 250 transitions. [2024-11-22 21:33:07,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 110 transitions, 444 flow [2024-11-22 21:33:07,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 110 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:33:07,281 INFO L231 Difference]: Finished difference. Result has 66 places, 39 transitions, 107 flow [2024-11-22 21:33:07,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=107, PETRI_PLACES=66, PETRI_TRANSITIONS=39} [2024-11-22 21:33:07,284 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -38 predicate places. [2024-11-22 21:33:07,287 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 39 transitions, 107 flow [2024-11-22 21:33:07,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:33:07,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:33:07,288 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:33:07,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:33:07,288 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-22 21:33:07,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:33:07,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1865231953, now seen corresponding path program 1 times [2024-11-22 21:33:07,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:33:07,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337522579] [2024-11-22 21:33:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:33:07,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:33:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:33:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:33:07,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:33:07,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337522579] [2024-11-22 21:33:07,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337522579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:33:07,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:33:07,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:33:07,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624013064] [2024-11-22 21:33:07,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:33:07,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:33:07,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:33:07,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:33:07,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:33:07,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 97 [2024-11-22 21:33:07,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 39 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 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) [2024-11-22 21:33:07,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:33:07,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 97 [2024-11-22 21:33:07,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:33:09,265 INFO L124 PetriNetUnfolderBase]: 6991/10691 cut-off events. [2024-11-22 21:33:09,265 INFO L125 PetriNetUnfolderBase]: For 1210/1210 co-relation queries the response was YES. [2024-11-22 21:33:09,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23613 conditions, 10691 events. 6991/10691 cut-off events. For 1210/1210 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 71666 event pairs, 1143 based on Foata normal form. 192/10712 useless extension candidates. Maximal degree in co-relation 23599. Up to 3913 conditions per place. [2024-11-22 21:33:09,315 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 43 selfloop transitions, 3 changer transitions 47/106 dead transitions. [2024-11-22 21:33:09,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 106 transitions, 454 flow [2024-11-22 21:33:09,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 21:33:09,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 21:33:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 239 transitions. [2024-11-22 21:33:09,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3079896907216495 [2024-11-22 21:33:09,317 INFO L175 Difference]: Start difference. First operand has 66 places, 39 transitions, 107 flow. Second operand 8 states and 239 transitions. [2024-11-22 21:33:09,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 106 transitions, 454 flow [2024-11-22 21:33:09,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 106 transitions, 432 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-22 21:33:09,365 INFO L231 Difference]: Finished difference. Result has 67 places, 39 transitions, 117 flow [2024-11-22 21:33:09,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=117, PETRI_PLACES=67, PETRI_TRANSITIONS=39} [2024-11-22 21:33:09,366 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -37 predicate places. [2024-11-22 21:33:09,366 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 39 transitions, 117 flow [2024-11-22 21:33:09,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 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) [2024-11-22 21:33:09,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:33:09,366 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:33:09,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 21:33:09,366 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-22 21:33:09,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:33:09,367 INFO L85 PathProgramCache]: Analyzing trace with hash -239763760, now seen corresponding path program 1 times [2024-11-22 21:33:09,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:33:09,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837204498] [2024-11-22 21:33:09,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:33:09,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:33:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:33:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:33:09,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:33:09,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837204498] [2024-11-22 21:33:09,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837204498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:33:09,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:33:09,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:33:09,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122560960] [2024-11-22 21:33:09,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:33:09,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:33:09,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:33:09,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:33:09,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:33:09,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 97 [2024-11-22 21:33:09,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 39 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:33:09,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:33:09,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 97 [2024-11-22 21:33:09,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:33:10,555 INFO L124 PetriNetUnfolderBase]: 3142/5112 cut-off events. [2024-11-22 21:33:10,559 INFO L125 PetriNetUnfolderBase]: For 1708/1724 co-relation queries the response was YES. [2024-11-22 21:33:10,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11163 conditions, 5112 events. 3142/5112 cut-off events. For 1708/1724 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 33780 event pairs, 493 based on Foata normal form. 144/5208 useless extension candidates. Maximal degree in co-relation 11147. Up to 2938 conditions per place. [2024-11-22 21:33:10,626 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 34 selfloop transitions, 2 changer transitions 37/88 dead transitions. [2024-11-22 21:33:10,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 88 transitions, 381 flow [2024-11-22 21:33:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:33:10,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:33:10,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2024-11-22 21:33:10,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3166421207658321 [2024-11-22 21:33:10,628 INFO L175 Difference]: Start difference. First operand has 67 places, 39 transitions, 117 flow. Second operand 7 states and 215 transitions. [2024-11-22 21:33:10,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 88 transitions, 381 flow [2024-11-22 21:33:10,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 88 transitions, 349 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-11-22 21:33:10,653 INFO L231 Difference]: Finished difference. Result has 66 places, 39 transitions, 113 flow [2024-11-22 21:33:10,653 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=113, PETRI_PLACES=66, PETRI_TRANSITIONS=39} [2024-11-22 21:33:10,653 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -38 predicate places. [2024-11-22 21:33:10,653 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 39 transitions, 113 flow [2024-11-22 21:33:10,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:33:10,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:33:10,654 INFO L204 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] [2024-11-22 21:33:10,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 21:33:10,654 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-22 21:33:10,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:33:10,654 INFO L85 PathProgramCache]: Analyzing trace with hash -485852255, now seen corresponding path program 1 times [2024-11-22 21:33:10,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:33:10,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673646611] [2024-11-22 21:33:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:33:10,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:33:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:33:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:33:11,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:33:11,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673646611] [2024-11-22 21:33:11,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673646611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:33:11,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:33:11,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 21:33:11,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200508651] [2024-11-22 21:33:11,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:33:11,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:33:11,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:33:11,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:33:11,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:33:11,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 97 [2024-11-22 21:33:11,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 39 transitions, 113 flow. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 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) [2024-11-22 21:33:11,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:33:11,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 97 [2024-11-22 21:33:11,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:33:12,595 INFO L124 PetriNetUnfolderBase]: 3166/5082 cut-off events. [2024-11-22 21:33:12,596 INFO L125 PetriNetUnfolderBase]: For 1271/1271 co-relation queries the response was YES. [2024-11-22 21:33:12,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11027 conditions, 5082 events. 3166/5082 cut-off events. For 1271/1271 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 32431 event pairs, 1460 based on Foata normal form. 134/5154 useless extension candidates. Maximal degree in co-relation 11012. Up to 2763 conditions per place. [2024-11-22 21:33:12,617 INFO L140 encePairwiseOnDemand]: 86/97 looper letters, 51 selfloop transitions, 9 changer transitions 49/124 dead transitions. [2024-11-22 21:33:12,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 124 transitions, 534 flow [2024-11-22 21:33:12,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 21:33:12,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 21:33:12,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 332 transitions. [2024-11-22 21:33:12,619 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31115276476101217 [2024-11-22 21:33:12,619 INFO L175 Difference]: Start difference. First operand has 66 places, 39 transitions, 113 flow. Second operand 11 states and 332 transitions. [2024-11-22 21:33:12,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 124 transitions, 534 flow [2024-11-22 21:33:12,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 124 transitions, 508 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-22 21:33:12,635 INFO L231 Difference]: Finished difference. Result has 75 places, 46 transitions, 191 flow [2024-11-22 21:33:12,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=191, PETRI_PLACES=75, PETRI_TRANSITIONS=46} [2024-11-22 21:33:12,636 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -29 predicate places. [2024-11-22 21:33:12,636 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 46 transitions, 191 flow [2024-11-22 21:33:12,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 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) [2024-11-22 21:33:12,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:33:12,636 INFO L204 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] [2024-11-22 21:33:12,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 21:33:12,636 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-22 21:33:12,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:33:12,637 INFO L85 PathProgramCache]: Analyzing trace with hash 516583743, now seen corresponding path program 1 times [2024-11-22 21:33:12,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:33:12,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838890304] [2024-11-22 21:33:12,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:33:12,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:33:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:33:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:33:12,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:33:12,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838890304] [2024-11-22 21:33:12,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838890304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:33:12,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:33:12,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:33:12,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73438711] [2024-11-22 21:33:12,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:33:12,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:33:12,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:33:12,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:33:12,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:33:12,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 97 [2024-11-22 21:33:12,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 46 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:33:12,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:33:12,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 97 [2024-11-22 21:33:12,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand