./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -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 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 17:47:19,430 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:47:19,491 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 17:47:19,506 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:47:19,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:47:19,537 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:47:19,538 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:47:19,539 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:47:19,539 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:47:19,540 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:47:19,540 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:47:19,541 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:47:19,541 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:47:19,542 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:47:19,542 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:47:19,542 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:47:19,543 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:47:19,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:47:19,544 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:47:19,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:47:19,544 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:47:19,545 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:47:19,545 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:47:19,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:47:19,546 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:47:19,546 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:47:19,546 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:47:19,547 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:47:19,547 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:47:19,548 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:47:19,548 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:47:19,548 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:47:19,548 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:47:19,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:47:19,549 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:47:19,549 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:47:19,549 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 17:47:19,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 17:47:19,550 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:47:19,550 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:47:19,550 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:47:19,551 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:47:19,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-11-20 17:47:19,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:47:19,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:47:19,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:47:19,852 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:47:19,853 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:47:19,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-20 17:47:21,213 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:47:21,426 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:47:21,426 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-20 17:47:21,439 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b4a366c6/2a43889b0d154ac1be2ba04e13572c34/FLAG6d792322c [2024-11-20 17:47:21,787 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b4a366c6/2a43889b0d154ac1be2ba04e13572c34 [2024-11-20 17:47:21,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:47:21,791 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:47:21,793 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:47:21,793 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:47:21,797 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:47:21,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:47:21" (1/1) ... [2024-11-20 17:47:21,799 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55be3f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:21, skipping insertion in model container [2024-11-20 17:47:21,799 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:47:21" (1/1) ... [2024-11-20 17:47:21,820 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:47:22,034 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 17:47:22,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:47:22,044 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 17:47:22,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:47:22,088 INFO L204 MainTranslator]: Completed translation [2024-11-20 17:47:22,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:22 WrapperNode [2024-11-20 17:47:22,089 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:47:22,090 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 17:47:22,090 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 17:47:22,090 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 17:47:22,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:22" (1/1) ... [2024-11-20 17:47:22,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:22" (1/1) ... [2024-11-20 17:47:22,133 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 254 [2024-11-20 17:47:22,133 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 17:47:22,134 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 17:47:22,134 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 17:47:22,134 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 17:47:22,144 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:22" (1/1) ... [2024-11-20 17:47:22,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:22" (1/1) ... [2024-11-20 17:47:22,148 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:22" (1/1) ... [2024-11-20 17:47:22,167 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-20 17:47:22,167 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:22" (1/1) ... [2024-11-20 17:47:22,168 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:22" (1/1) ... [2024-11-20 17:47:22,175 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:22" (1/1) ... [2024-11-20 17:47:22,183 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:22" (1/1) ... [2024-11-20 17:47:22,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:22" (1/1) ... [2024-11-20 17:47:22,190 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:22" (1/1) ... [2024-11-20 17:47:22,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 17:47:22,194 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 17:47:22,194 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 17:47:22,194 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 17:47:22,195 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:22" (1/1) ... [2024-11-20 17:47:22,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:47:22,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:47:22,231 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) [2024-11-20 17:47:22,237 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 [2024-11-20 17:47:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 17:47:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 17:47:22,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 17:47:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 17:47:22,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 17:47:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 17:47:22,293 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 17:47:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 17:47:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 17:47:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 17:47:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 17:47:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 17:47:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 17:47:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 17:47:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 17:47:22,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 17:47:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 17:47:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 17:47:22,297 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 17:47:22,453 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 17:47:22,456 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 17:47:22,878 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 17:47:22,878 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 17:47:23,265 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 17:47:23,266 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-20 17:47:23,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:47:23 BoogieIcfgContainer [2024-11-20 17:47:23,266 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 17:47:23,268 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 17:47:23,268 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 17:47:23,273 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 17:47:23,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:47:21" (1/3) ... [2024-11-20 17:47:23,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ed8000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:47:23, skipping insertion in model container [2024-11-20 17:47:23,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:22" (2/3) ... [2024-11-20 17:47:23,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ed8000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:47:23, skipping insertion in model container [2024-11-20 17:47:23,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:47:23" (3/3) ... [2024-11-20 17:47:23,276 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-11-20 17:47:23,295 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 17:47:23,295 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-20 17:47:23,295 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 17:47:23,361 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 17:47:23,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 62 transitions, 145 flow [2024-11-20 17:47:23,440 INFO L124 PetriNetUnfolderBase]: 7/59 cut-off events. [2024-11-20 17:47:23,442 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 17:47:23,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 7/59 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 149 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-11-20 17:47:23,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 62 transitions, 145 flow [2024-11-20 17:47:23,451 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 58 transitions, 134 flow [2024-11-20 17:47:23,464 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:47:23,473 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;@5f009a4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:47:23,473 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-20 17:47:23,477 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:47:23,478 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-20 17:47:23,478 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 17:47:23,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:23,479 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-20 17:47:23,480 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:23,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:23,487 INFO L85 PathProgramCache]: Analyzing trace with hash 759561, now seen corresponding path program 1 times [2024-11-20 17:47:23,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:23,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785359437] [2024-11-20 17:47:23,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:23,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:23,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:23,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:23,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785359437] [2024-11-20 17:47:23,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785359437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:23,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:23,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 17:47:23,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245051395] [2024-11-20 17:47:23,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:23,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:47:23,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:23,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:47:23,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:47:23,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-20 17:47:23,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:23,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:23,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-20 17:47:23,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:24,633 INFO L124 PetriNetUnfolderBase]: 4012/6158 cut-off events. [2024-11-20 17:47:24,634 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-11-20 17:47:24,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11859 conditions, 6158 events. 4012/6158 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37744 event pairs, 3528 based on Foata normal form. 379/4445 useless extension candidates. Maximal degree in co-relation 11339. Up to 5391 conditions per place. [2024-11-20 17:47:24,689 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 40 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-11-20 17:47:24,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 206 flow [2024-11-20 17:47:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:47:24,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:47:24,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-20 17:47:24,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-11-20 17:47:24,705 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 134 flow. Second operand 3 states and 89 transitions. [2024-11-20 17:47:24,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 206 flow [2024-11-20 17:47:24,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 194 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-20 17:47:24,720 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 114 flow [2024-11-20 17:47:24,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2024-11-20 17:47:24,728 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -8 predicate places. [2024-11-20 17:47:24,729 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 114 flow [2024-11-20 17:47:24,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:24,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:24,730 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-20 17:47:24,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 17:47:24,730 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:24,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:24,731 INFO L85 PathProgramCache]: Analyzing trace with hash 759562, now seen corresponding path program 1 times [2024-11-20 17:47:24,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:24,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346204030] [2024-11-20 17:47:24,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:24,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:25,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:25,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346204030] [2024-11-20 17:47:25,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346204030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:25,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:25,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:47:25,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937132151] [2024-11-20 17:47:25,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:25,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:47:25,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:25,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:47:25,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:47:25,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-20 17:47:25,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:25,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:25,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-20 17:47:25,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:25,715 INFO L124 PetriNetUnfolderBase]: 4013/6161 cut-off events. [2024-11-20 17:47:25,716 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-20 17:47:25,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11678 conditions, 6161 events. 4013/6161 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37750 event pairs, 3528 based on Foata normal form. 0/4067 useless extension candidates. Maximal degree in co-relation 11649. Up to 5400 conditions per place. [2024-11-20 17:47:25,758 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 43 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-11-20 17:47:25,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 214 flow [2024-11-20 17:47:25,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:47:25,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:47:25,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-20 17:47:25,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-11-20 17:47:25,760 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 114 flow. Second operand 4 states and 104 transitions. [2024-11-20 17:47:25,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 214 flow [2024-11-20 17:47:25,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:47:25,762 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 137 flow [2024-11-20 17:47:25,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2024-11-20 17:47:25,764 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-11-20 17:47:25,764 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 137 flow [2024-11-20 17:47:25,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:25,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:25,765 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-20 17:47:25,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 17:47:25,766 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:25,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:25,768 INFO L85 PathProgramCache]: Analyzing trace with hash 23547245, now seen corresponding path program 1 times [2024-11-20 17:47:25,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:25,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854719059] [2024-11-20 17:47:25,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:25,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:26,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:26,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:26,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854719059] [2024-11-20 17:47:26,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854719059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:26,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:26,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:47:26,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030616752] [2024-11-20 17:47:26,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:26,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:47:26,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:26,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:47:26,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:47:26,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-20 17:47:26,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:26,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:26,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-20 17:47:26,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:26,613 INFO L124 PetriNetUnfolderBase]: 4014/6164 cut-off events. [2024-11-20 17:47:26,614 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-20 17:47:26,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11695 conditions, 6164 events. 4014/6164 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37794 event pairs, 3528 based on Foata normal form. 0/4069 useless extension candidates. Maximal degree in co-relation 11670. Up to 5399 conditions per place. [2024-11-20 17:47:26,659 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 43 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-11-20 17:47:26,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 243 flow [2024-11-20 17:47:26,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:47:26,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:47:26,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-20 17:47:26,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-11-20 17:47:26,663 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 137 flow. Second operand 5 states and 121 transitions. [2024-11-20 17:47:26,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 243 flow [2024-11-20 17:47:26,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:47:26,666 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 171 flow [2024-11-20 17:47:26,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-11-20 17:47:26,667 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-20 17:47:26,667 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 171 flow [2024-11-20 17:47:26,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:26,668 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:26,668 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-20 17:47:26,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 17:47:26,668 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:26,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:26,669 INFO L85 PathProgramCache]: Analyzing trace with hash 729963479, now seen corresponding path program 1 times [2024-11-20 17:47:26,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:26,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384325306] [2024-11-20 17:47:26,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:26,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:26,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:26,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:26,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384325306] [2024-11-20 17:47:26,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384325306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:47:26,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694144153] [2024-11-20 17:47:26,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:26,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:26,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:47:26,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:47:26,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 17:47:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:26,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-20 17:47:26,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:47:27,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-20 17:47:27,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:27,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:47:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:27,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694144153] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:47:27,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:47:27,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-20 17:47:27,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88219560] [2024-11-20 17:47:27,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:47:27,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:27,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:27,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:27,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:27,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-20 17:47:27,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 171 flow. Second operand has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:27,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:27,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-20 17:47:27,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:28,211 INFO L124 PetriNetUnfolderBase]: 4015/6166 cut-off events. [2024-11-20 17:47:28,211 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-20 17:47:28,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11718 conditions, 6166 events. 4015/6166 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37749 event pairs, 3528 based on Foata normal form. 0/4074 useless extension candidates. Maximal degree in co-relation 11680. Up to 5399 conditions per place. [2024-11-20 17:47:28,257 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 41 selfloop transitions, 11 changer transitions 0/60 dead transitions. [2024-11-20 17:47:28,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 60 transitions, 286 flow [2024-11-20 17:47:28,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 17:47:28,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 17:47:28,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-11-20 17:47:28,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-11-20 17:47:28,260 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 171 flow. Second operand 9 states and 177 transitions. [2024-11-20 17:47:28,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 60 transitions, 286 flow [2024-11-20 17:47:28,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:47:28,263 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 203 flow [2024-11-20 17:47:28,263 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=203, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-11-20 17:47:28,264 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2024-11-20 17:47:28,264 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 203 flow [2024-11-20 17:47:28,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:28,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:28,265 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-20 17:47:28,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 17:47:28,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:28,470 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:28,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:28,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1154089852, now seen corresponding path program 1 times [2024-11-20 17:47:28,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:28,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461277273] [2024-11-20 17:47:28,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:28,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:28,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:28,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461277273] [2024-11-20 17:47:28,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461277273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:47:28,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049460168] [2024-11-20 17:47:28,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:28,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:28,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:47:28,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:47:28,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 17:47:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:28,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 17:47:28,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:47:28,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-20 17:47:28,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:28,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:47:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:29,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049460168] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:47:29,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:47:29,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-20 17:47:29,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125284658] [2024-11-20 17:47:29,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:47:29,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 17:47:29,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:29,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 17:47:29,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-20 17:47:29,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-20 17:47:29,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 203 flow. Second operand has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:29,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:29,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-20 17:47:29,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:29,913 INFO L124 PetriNetUnfolderBase]: 4016/6168 cut-off events. [2024-11-20 17:47:29,914 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-20 17:47:29,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11734 conditions, 6168 events. 4016/6168 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37825 event pairs, 3528 based on Foata normal form. 2/4078 useless extension candidates. Maximal degree in co-relation 11688. Up to 5392 conditions per place. [2024-11-20 17:47:29,958 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 36 selfloop transitions, 18 changer transitions 0/62 dead transitions. [2024-11-20 17:47:29,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 62 transitions, 317 flow [2024-11-20 17:47:29,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 17:47:29,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 17:47:29,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-11-20 17:47:29,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-11-20 17:47:29,962 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 203 flow. Second operand 9 states and 182 transitions. [2024-11-20 17:47:29,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 62 transitions, 317 flow [2024-11-20 17:47:29,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 62 transitions, 270 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-20 17:47:29,965 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 198 flow [2024-11-20 17:47:29,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=198, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-11-20 17:47:29,967 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2024-11-20 17:47:29,967 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 198 flow [2024-11-20 17:47:29,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:29,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:29,969 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:29,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 17:47:30,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:30,170 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:30,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:30,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1420350188, now seen corresponding path program 1 times [2024-11-20 17:47:30,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:30,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810211687] [2024-11-20 17:47:30,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:30,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:30,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:30,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810211687] [2024-11-20 17:47:30,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810211687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:30,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:30,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:47:30,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066065935] [2024-11-20 17:47:30,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:30,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:47:30,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:30,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:47:30,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:47:30,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-20 17:47:30,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:30,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:30,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-20 17:47:30,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:30,718 INFO L124 PetriNetUnfolderBase]: 4177/6469 cut-off events. [2024-11-20 17:47:30,718 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-11-20 17:47:30,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12314 conditions, 6469 events. 4177/6469 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 39384 event pairs, 3675 based on Foata normal form. 112/4483 useless extension candidates. Maximal degree in co-relation 11673. Up to 5406 conditions per place. [2024-11-20 17:47:30,760 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 74 selfloop transitions, 3 changer transitions 1/86 dead transitions. [2024-11-20 17:47:30,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 86 transitions, 443 flow [2024-11-20 17:47:30,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:47:30,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:47:30,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-11-20 17:47:30,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-11-20 17:47:30,763 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 198 flow. Second operand 4 states and 136 transitions. [2024-11-20 17:47:30,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 86 transitions, 443 flow [2024-11-20 17:47:30,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 86 transitions, 390 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-20 17:47:30,766 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 190 flow [2024-11-20 17:47:30,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-11-20 17:47:30,767 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-11-20 17:47:30,768 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 190 flow [2024-11-20 17:47:30,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:30,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:30,769 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:30,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 17:47:30,769 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:30,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:30,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1436128967, now seen corresponding path program 1 times [2024-11-20 17:47:30,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:30,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521168447] [2024-11-20 17:47:30,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:30,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:31,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:31,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521168447] [2024-11-20 17:47:31,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521168447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:31,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:31,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:47:31,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776087788] [2024-11-20 17:47:31,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:31,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:47:31,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:31,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:47:31,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:47:31,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-20 17:47:31,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:31,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:31,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-20 17:47:31,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:31,428 INFO L124 PetriNetUnfolderBase]: 3028/4665 cut-off events. [2024-11-20 17:47:31,428 INFO L125 PetriNetUnfolderBase]: For 436/436 co-relation queries the response was YES. [2024-11-20 17:47:31,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9830 conditions, 4665 events. 3028/4665 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 26635 event pairs, 2670 based on Foata normal form. 0/3354 useless extension candidates. Maximal degree in co-relation 9234. Up to 4179 conditions per place. [2024-11-20 17:47:31,455 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 47 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-11-20 17:47:31,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 280 flow [2024-11-20 17:47:31,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:47:31,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:47:31,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-20 17:47:31,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-11-20 17:47:31,456 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 190 flow. Second operand 4 states and 98 transitions. [2024-11-20 17:47:31,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 280 flow [2024-11-20 17:47:31,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:47:31,460 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 181 flow [2024-11-20 17:47:31,461 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-11-20 17:47:31,461 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-20 17:47:31,461 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 181 flow [2024-11-20 17:47:31,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:31,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:31,462 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:31,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 17:47:31,462 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:31,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:31,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1436128968, now seen corresponding path program 1 times [2024-11-20 17:47:31,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:31,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519477841] [2024-11-20 17:47:31,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:31,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:47:31,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:31,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519477841] [2024-11-20 17:47:31,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519477841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:31,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:31,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:47:31,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167728780] [2024-11-20 17:47:31,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:31,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:47:31,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:31,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:47:31,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:47:31,549 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-20 17:47:31,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:31,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:31,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-20 17:47:31,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:31,846 INFO L124 PetriNetUnfolderBase]: 2095/3259 cut-off events. [2024-11-20 17:47:31,846 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-11-20 17:47:31,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6641 conditions, 3259 events. 2095/3259 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17152 event pairs, 1813 based on Foata normal form. 0/2622 useless extension candidates. Maximal degree in co-relation 6025. Up to 2896 conditions per place. [2024-11-20 17:47:31,866 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 41 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-11-20 17:47:31,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 265 flow [2024-11-20 17:47:31,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:47:31,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:47:31,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-11-20 17:47:31,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-11-20 17:47:31,868 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 181 flow. Second operand 5 states and 109 transitions. [2024-11-20 17:47:31,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 265 flow [2024-11-20 17:47:31,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:47:31,871 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 178 flow [2024-11-20 17:47:31,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-11-20 17:47:31,871 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-20 17:47:31,872 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 178 flow [2024-11-20 17:47:31,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:31,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:31,872 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:31,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 17:47:31,872 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:31,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:31,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2069279750, now seen corresponding path program 1 times [2024-11-20 17:47:31,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:31,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789183233] [2024-11-20 17:47:31,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:31,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:31,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:31,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:31,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789183233] [2024-11-20 17:47:31,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789183233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:31,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:31,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 17:47:31,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570575683] [2024-11-20 17:47:31,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:31,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:47:31,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:31,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:47:31,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:47:31,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-20 17:47:31,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:31,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:31,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-20 17:47:31,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:32,260 INFO L124 PetriNetUnfolderBase]: 1937/3073 cut-off events. [2024-11-20 17:47:32,261 INFO L125 PetriNetUnfolderBase]: For 424/424 co-relation queries the response was YES. [2024-11-20 17:47:32,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6348 conditions, 3073 events. 1937/3073 cut-off events. For 424/424 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 15635 event pairs, 695 based on Foata normal form. 71/2583 useless extension candidates. Maximal degree in co-relation 6070. Up to 2082 conditions per place. [2024-11-20 17:47:32,280 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 60 selfloop transitions, 2 changer transitions 1/71 dead transitions. [2024-11-20 17:47:32,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 71 transitions, 342 flow [2024-11-20 17:47:32,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:47:32,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:47:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-20 17:47:32,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-11-20 17:47:32,283 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 178 flow. Second operand 3 states and 102 transitions. [2024-11-20 17:47:32,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 71 transitions, 342 flow [2024-11-20 17:47:32,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 331 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 17:47:32,285 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 178 flow [2024-11-20 17:47:32,286 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-11-20 17:47:32,286 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-20 17:47:32,286 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 178 flow [2024-11-20 17:47:32,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:32,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:32,287 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:32,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 17:47:32,287 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:32,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:32,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2085322483, now seen corresponding path program 1 times [2024-11-20 17:47:32,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:32,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530031480] [2024-11-20 17:47:32,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:32,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:47:32,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:32,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530031480] [2024-11-20 17:47:32,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530031480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:32,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:32,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:47:32,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877837861] [2024-11-20 17:47:32,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:32,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:47:32,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:32,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:47:32,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:47:32,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-20 17:47:32,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:32,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:32,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-20 17:47:32,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:32,538 INFO L124 PetriNetUnfolderBase]: 1665/2611 cut-off events. [2024-11-20 17:47:32,538 INFO L125 PetriNetUnfolderBase]: For 507/512 co-relation queries the response was YES. [2024-11-20 17:47:32,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5820 conditions, 2611 events. 1665/2611 cut-off events. For 507/512 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12397 event pairs, 717 based on Foata normal form. 15/2267 useless extension candidates. Maximal degree in co-relation 5785. Up to 2249 conditions per place. [2024-11-20 17:47:32,551 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 55 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-11-20 17:47:32,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 320 flow [2024-11-20 17:47:32,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:47:32,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:47:32,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-20 17:47:32,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.510752688172043 [2024-11-20 17:47:32,553 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 178 flow. Second operand 3 states and 95 transitions. [2024-11-20 17:47:32,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 320 flow [2024-11-20 17:47:32,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:47:32,555 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 199 flow [2024-11-20 17:47:32,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-20 17:47:32,556 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-20 17:47:32,556 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 199 flow [2024-11-20 17:47:32,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:32,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:32,556 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:32,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 17:47:32,557 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:32,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:32,557 INFO L85 PathProgramCache]: Analyzing trace with hash 372111769, now seen corresponding path program 1 times [2024-11-20 17:47:32,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:32,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825284474] [2024-11-20 17:47:32,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:32,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:47:32,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825284474] [2024-11-20 17:47:32,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825284474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:32,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:32,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:47:32,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861369728] [2024-11-20 17:47:32,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:32,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:47:32,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:32,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:47:32,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:47:32,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-20 17:47:32,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:32,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:32,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-20 17:47:32,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:32,930 INFO L124 PetriNetUnfolderBase]: 1906/3090 cut-off events. [2024-11-20 17:47:32,930 INFO L125 PetriNetUnfolderBase]: For 1627/1627 co-relation queries the response was YES. [2024-11-20 17:47:32,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7348 conditions, 3090 events. 1906/3090 cut-off events. For 1627/1627 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 15481 event pairs, 1453 based on Foata normal form. 64/2789 useless extension candidates. Maximal degree in co-relation 7311. Up to 2352 conditions per place. [2024-11-20 17:47:32,947 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 46 selfloop transitions, 3 changer transitions 19/76 dead transitions. [2024-11-20 17:47:32,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 397 flow [2024-11-20 17:47:32,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:47:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:47:32,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-20 17:47:32,949 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49193548387096775 [2024-11-20 17:47:32,949 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 199 flow. Second operand 4 states and 122 transitions. [2024-11-20 17:47:32,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 397 flow [2024-11-20 17:47:32,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 76 transitions, 372 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-20 17:47:32,952 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 193 flow [2024-11-20 17:47:32,952 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-11-20 17:47:32,953 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-11-20 17:47:32,953 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 193 flow [2024-11-20 17:47:32,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:32,953 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:32,953 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:32,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 17:47:32,953 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:32,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:32,954 INFO L85 PathProgramCache]: Analyzing trace with hash 699230762, now seen corresponding path program 1 times [2024-11-20 17:47:32,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:32,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365107498] [2024-11-20 17:47:32,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:32,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:33,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:47:33,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:33,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365107498] [2024-11-20 17:47:33,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365107498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:47:33,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529110248] [2024-11-20 17:47:33,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:33,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:33,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:47:33,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:47:33,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 17:47:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:33,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 17:47:33,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:47:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:47:33,332 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:47:33,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529110248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:33,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 17:47:33,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-20 17:47:33,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961818706] [2024-11-20 17:47:33,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:33,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:47:33,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:33,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:47:33,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-20 17:47:33,348 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-20 17:47:33,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:33,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:33,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-20 17:47:33,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:33,554 INFO L124 PetriNetUnfolderBase]: 1256/2044 cut-off events. [2024-11-20 17:47:33,555 INFO L125 PetriNetUnfolderBase]: For 577/577 co-relation queries the response was YES. [2024-11-20 17:47:33,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4606 conditions, 2044 events. 1256/2044 cut-off events. For 577/577 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9674 event pairs, 929 based on Foata normal form. 0/1890 useless extension candidates. Maximal degree in co-relation 4567. Up to 1767 conditions per place. [2024-11-20 17:47:33,566 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 43 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-11-20 17:47:33,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 279 flow [2024-11-20 17:47:33,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:47:33,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:47:33,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-20 17:47:33,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-11-20 17:47:33,568 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 193 flow. Second operand 4 states and 100 transitions. [2024-11-20 17:47:33,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 279 flow [2024-11-20 17:47:33,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 272 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-20 17:47:33,571 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 186 flow [2024-11-20 17:47:33,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-11-20 17:47:33,571 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-20 17:47:33,572 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 186 flow [2024-11-20 17:47:33,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:33,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:33,572 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:33,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 17:47:33,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:33,777 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:33,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:33,777 INFO L85 PathProgramCache]: Analyzing trace with hash 699230761, now seen corresponding path program 1 times [2024-11-20 17:47:33,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:33,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645055599] [2024-11-20 17:47:33,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:33,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:47:33,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:33,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645055599] [2024-11-20 17:47:33,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645055599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:33,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:33,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:47:33,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553478636] [2024-11-20 17:47:33,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:33,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:47:33,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:33,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:47:33,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:47:33,868 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-20 17:47:33,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:33,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:33,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-20 17:47:33,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:34,014 INFO L124 PetriNetUnfolderBase]: 902/1526 cut-off events. [2024-11-20 17:47:34,014 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2024-11-20 17:47:34,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3299 conditions, 1526 events. 902/1526 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7086 event pairs, 653 based on Foata normal form. 97/1538 useless extension candidates. Maximal degree in co-relation 3259. Up to 1271 conditions per place. [2024-11-20 17:47:34,022 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 42 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-20 17:47:34,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 270 flow [2024-11-20 17:47:34,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:47:34,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:47:34,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-11-20 17:47:34,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-11-20 17:47:34,023 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 186 flow. Second operand 4 states and 90 transitions. [2024-11-20 17:47:34,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 270 flow [2024-11-20 17:47:34,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:47:34,024 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 180 flow [2024-11-20 17:47:34,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-11-20 17:47:34,025 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-20 17:47:34,025 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 180 flow [2024-11-20 17:47:34,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:34,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:34,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:34,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 17:47:34,026 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:34,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:34,029 INFO L85 PathProgramCache]: Analyzing trace with hash -68022964, now seen corresponding path program 1 times [2024-11-20 17:47:34,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:34,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172361033] [2024-11-20 17:47:34,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:34,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:34,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:34,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172361033] [2024-11-20 17:47:34,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172361033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:34,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:34,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:34,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078612149] [2024-11-20 17:47:34,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:34,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:34,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:34,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:34,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:34,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:34,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 180 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:34,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:34,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:34,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:35,336 INFO L124 PetriNetUnfolderBase]: 1304/2220 cut-off events. [2024-11-20 17:47:35,336 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-11-20 17:47:35,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4813 conditions, 2220 events. 1304/2220 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 11720 event pairs, 135 based on Foata normal form. 1/2156 useless extension candidates. Maximal degree in co-relation 4774. Up to 1406 conditions per place. [2024-11-20 17:47:35,347 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 108 selfloop transitions, 26 changer transitions 3/144 dead transitions. [2024-11-20 17:47:35,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 144 transitions, 701 flow [2024-11-20 17:47:35,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:47:35,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 17:47:35,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 307 transitions. [2024-11-20 17:47:35,349 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41263440860215056 [2024-11-20 17:47:35,349 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 180 flow. Second operand 12 states and 307 transitions. [2024-11-20 17:47:35,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 144 transitions, 701 flow [2024-11-20 17:47:35,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 144 transitions, 697 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:47:35,354 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 314 flow [2024-11-20 17:47:35,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=314, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-11-20 17:47:35,355 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 14 predicate places. [2024-11-20 17:47:35,355 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 314 flow [2024-11-20 17:47:35,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:35,356 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:35,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:35,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 17:47:35,356 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:35,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:35,357 INFO L85 PathProgramCache]: Analyzing trace with hash -2086380966, now seen corresponding path program 2 times [2024-11-20 17:47:35,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:35,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689335123] [2024-11-20 17:47:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:35,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:36,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:36,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689335123] [2024-11-20 17:47:36,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689335123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:36,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:36,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:36,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606067994] [2024-11-20 17:47:36,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:36,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:36,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:36,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:36,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:36,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:36,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 314 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:36,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:36,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:36,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:36,767 INFO L124 PetriNetUnfolderBase]: 1474/2573 cut-off events. [2024-11-20 17:47:36,768 INFO L125 PetriNetUnfolderBase]: For 1567/1567 co-relation queries the response was YES. [2024-11-20 17:47:36,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6732 conditions, 2573 events. 1474/2573 cut-off events. For 1567/1567 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 14243 event pairs, 373 based on Foata normal form. 1/2495 useless extension candidates. Maximal degree in co-relation 6688. Up to 1741 conditions per place. [2024-11-20 17:47:36,782 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 107 selfloop transitions, 34 changer transitions 3/151 dead transitions. [2024-11-20 17:47:36,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 151 transitions, 889 flow [2024-11-20 17:47:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:47:36,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:47:36,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-11-20 17:47:36,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4120234604105572 [2024-11-20 17:47:36,785 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 314 flow. Second operand 11 states and 281 transitions. [2024-11-20 17:47:36,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 151 transitions, 889 flow [2024-11-20 17:47:36,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 151 transitions, 882 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:47:36,789 INFO L231 Difference]: Finished difference. Result has 90 places, 96 transitions, 539 flow [2024-11-20 17:47:36,790 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=539, PETRI_PLACES=90, PETRI_TRANSITIONS=96} [2024-11-20 17:47:36,790 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 29 predicate places. [2024-11-20 17:47:36,790 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 96 transitions, 539 flow [2024-11-20 17:47:36,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:36,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:36,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:36,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 17:47:36,791 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:36,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:36,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1511651402, now seen corresponding path program 3 times [2024-11-20 17:47:36,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:36,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734222170] [2024-11-20 17:47:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:36,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:37,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:37,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734222170] [2024-11-20 17:47:37,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734222170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:37,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:37,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:37,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197625688] [2024-11-20 17:47:37,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:37,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:37,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:37,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:37,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:37,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:37,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 96 transitions, 539 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:37,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:37,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:37,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:38,095 INFO L124 PetriNetUnfolderBase]: 1641/2889 cut-off events. [2024-11-20 17:47:38,095 INFO L125 PetriNetUnfolderBase]: For 3634/3646 co-relation queries the response was YES. [2024-11-20 17:47:38,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8524 conditions, 2889 events. 1641/2889 cut-off events. For 3634/3646 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 16848 event pairs, 292 based on Foata normal form. 4/2796 useless extension candidates. Maximal degree in co-relation 8472. Up to 1750 conditions per place. [2024-11-20 17:47:38,113 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 122 selfloop transitions, 44 changer transitions 3/176 dead transitions. [2024-11-20 17:47:38,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 176 transitions, 1184 flow [2024-11-20 17:47:38,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:47:38,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 17:47:38,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 311 transitions. [2024-11-20 17:47:38,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41801075268817206 [2024-11-20 17:47:38,115 INFO L175 Difference]: Start difference. First operand has 90 places, 96 transitions, 539 flow. Second operand 12 states and 311 transitions. [2024-11-20 17:47:38,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 176 transitions, 1184 flow [2024-11-20 17:47:38,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 176 transitions, 1165 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-20 17:47:38,127 INFO L231 Difference]: Finished difference. Result has 103 places, 105 transitions, 692 flow [2024-11-20 17:47:38,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=692, PETRI_PLACES=103, PETRI_TRANSITIONS=105} [2024-11-20 17:47:38,127 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 42 predicate places. [2024-11-20 17:47:38,127 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 105 transitions, 692 flow [2024-11-20 17:47:38,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:38,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:38,128 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:38,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 17:47:38,130 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:38,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:38,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1990466488, now seen corresponding path program 4 times [2024-11-20 17:47:38,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:38,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738928466] [2024-11-20 17:47:38,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:38,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:38,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:38,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738928466] [2024-11-20 17:47:38,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738928466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:38,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:38,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:38,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813972204] [2024-11-20 17:47:38,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:38,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:38,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:38,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:38,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:38,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:38,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 105 transitions, 692 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:38,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:38,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:38,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:39,383 INFO L124 PetriNetUnfolderBase]: 1745/3111 cut-off events. [2024-11-20 17:47:39,383 INFO L125 PetriNetUnfolderBase]: For 5800/5812 co-relation queries the response was YES. [2024-11-20 17:47:39,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9853 conditions, 3111 events. 1745/3111 cut-off events. For 5800/5812 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18607 event pairs, 396 based on Foata normal form. 4/3008 useless extension candidates. Maximal degree in co-relation 9797. Up to 2087 conditions per place. [2024-11-20 17:47:39,402 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 129 selfloop transitions, 40 changer transitions 3/179 dead transitions. [2024-11-20 17:47:39,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 179 transitions, 1343 flow [2024-11-20 17:47:39,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:47:39,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 17:47:39,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 307 transitions. [2024-11-20 17:47:39,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41263440860215056 [2024-11-20 17:47:39,404 INFO L175 Difference]: Start difference. First operand has 103 places, 105 transitions, 692 flow. Second operand 12 states and 307 transitions. [2024-11-20 17:47:39,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 179 transitions, 1343 flow [2024-11-20 17:47:39,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 179 transitions, 1267 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-11-20 17:47:39,415 INFO L231 Difference]: Finished difference. Result has 111 places, 111 transitions, 771 flow [2024-11-20 17:47:39,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=771, PETRI_PLACES=111, PETRI_TRANSITIONS=111} [2024-11-20 17:47:39,415 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 50 predicate places. [2024-11-20 17:47:39,416 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 111 transitions, 771 flow [2024-11-20 17:47:39,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:39,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:39,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:39,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 17:47:39,416 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:39,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:39,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1342423630, now seen corresponding path program 5 times [2024-11-20 17:47:39,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:39,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718374597] [2024-11-20 17:47:39,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:39,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:40,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:40,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718374597] [2024-11-20 17:47:40,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718374597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:40,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:40,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:40,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259764562] [2024-11-20 17:47:40,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:40,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:40,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:40,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:40,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:40,038 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:40,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 111 transitions, 771 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:40,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:40,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:40,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:40,600 INFO L124 PetriNetUnfolderBase]: 1745/3109 cut-off events. [2024-11-20 17:47:40,600 INFO L125 PetriNetUnfolderBase]: For 7577/7601 co-relation queries the response was YES. [2024-11-20 17:47:40,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10254 conditions, 3109 events. 1745/3109 cut-off events. For 7577/7601 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18661 event pairs, 410 based on Foata normal form. 16/3015 useless extension candidates. Maximal degree in co-relation 10194. Up to 2171 conditions per place. [2024-11-20 17:47:40,615 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 125 selfloop transitions, 39 changer transitions 3/174 dead transitions. [2024-11-20 17:47:40,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 174 transitions, 1375 flow [2024-11-20 17:47:40,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:47:40,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 17:47:40,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 298 transitions. [2024-11-20 17:47:40,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-11-20 17:47:40,617 INFO L175 Difference]: Start difference. First operand has 111 places, 111 transitions, 771 flow. Second operand 12 states and 298 transitions. [2024-11-20 17:47:40,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 174 transitions, 1375 flow [2024-11-20 17:47:40,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 174 transitions, 1281 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-20 17:47:40,629 INFO L231 Difference]: Finished difference. Result has 117 places, 114 transitions, 800 flow [2024-11-20 17:47:40,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=800, PETRI_PLACES=117, PETRI_TRANSITIONS=114} [2024-11-20 17:47:40,629 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 56 predicate places. [2024-11-20 17:47:40,630 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 114 transitions, 800 flow [2024-11-20 17:47:40,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:40,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:40,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:40,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-20 17:47:40,630 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:40,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:40,631 INFO L85 PathProgramCache]: Analyzing trace with hash 213937972, now seen corresponding path program 6 times [2024-11-20 17:47:40,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:40,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570809385] [2024-11-20 17:47:40,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:40,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:41,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:41,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570809385] [2024-11-20 17:47:41,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570809385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:41,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:41,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:41,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039332716] [2024-11-20 17:47:41,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:41,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:41,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:41,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:41,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:41,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:41,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 114 transitions, 800 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:41,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:41,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:41,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:42,003 INFO L124 PetriNetUnfolderBase]: 1867/3349 cut-off events. [2024-11-20 17:47:42,003 INFO L125 PetriNetUnfolderBase]: For 8357/8381 co-relation queries the response was YES. [2024-11-20 17:47:42,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11107 conditions, 3349 events. 1867/3349 cut-off events. For 8357/8381 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 20501 event pairs, 614 based on Foata normal form. 7/3232 useless extension candidates. Maximal degree in co-relation 11044. Up to 2438 conditions per place. [2024-11-20 17:47:42,027 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 132 selfloop transitions, 37 changer transitions 3/179 dead transitions. [2024-11-20 17:47:42,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 179 transitions, 1499 flow [2024-11-20 17:47:42,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:47:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:47:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-11-20 17:47:42,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-11-20 17:47:42,029 INFO L175 Difference]: Start difference. First operand has 117 places, 114 transitions, 800 flow. Second operand 11 states and 280 transitions. [2024-11-20 17:47:42,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 179 transitions, 1499 flow [2024-11-20 17:47:42,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 179 transitions, 1409 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-11-20 17:47:42,049 INFO L231 Difference]: Finished difference. Result has 123 places, 125 transitions, 945 flow [2024-11-20 17:47:42,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=945, PETRI_PLACES=123, PETRI_TRANSITIONS=125} [2024-11-20 17:47:42,049 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 62 predicate places. [2024-11-20 17:47:42,049 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 125 transitions, 945 flow [2024-11-20 17:47:42,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:42,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:42,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:42,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-20 17:47:42,050 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:42,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:42,052 INFO L85 PathProgramCache]: Analyzing trace with hash 709586714, now seen corresponding path program 7 times [2024-11-20 17:47:42,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:42,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011319737] [2024-11-20 17:47:42,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:42,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:42,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:42,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:42,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011319737] [2024-11-20 17:47:42,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011319737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:42,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:42,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:42,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363473382] [2024-11-20 17:47:42,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:42,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:42,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:42,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:42,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:42,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:42,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 125 transitions, 945 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:42,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:42,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:42,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:43,254 INFO L124 PetriNetUnfolderBase]: 2007/3588 cut-off events. [2024-11-20 17:47:43,254 INFO L125 PetriNetUnfolderBase]: For 13903/13939 co-relation queries the response was YES. [2024-11-20 17:47:43,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12684 conditions, 3588 events. 2007/3588 cut-off events. For 13903/13939 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22263 event pairs, 606 based on Foata normal form. 9/3475 useless extension candidates. Maximal degree in co-relation 12616. Up to 2643 conditions per place. [2024-11-20 17:47:43,275 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 141 selfloop transitions, 37 changer transitions 3/188 dead transitions. [2024-11-20 17:47:43,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 188 transitions, 1680 flow [2024-11-20 17:47:43,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:47:43,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:47:43,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 277 transitions. [2024-11-20 17:47:43,276 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40615835777126097 [2024-11-20 17:47:43,276 INFO L175 Difference]: Start difference. First operand has 123 places, 125 transitions, 945 flow. Second operand 11 states and 277 transitions. [2024-11-20 17:47:43,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 188 transitions, 1680 flow [2024-11-20 17:47:43,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 188 transitions, 1592 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-11-20 17:47:43,306 INFO L231 Difference]: Finished difference. Result has 135 places, 134 transitions, 1092 flow [2024-11-20 17:47:43,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1092, PETRI_PLACES=135, PETRI_TRANSITIONS=134} [2024-11-20 17:47:43,307 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 74 predicate places. [2024-11-20 17:47:43,307 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 134 transitions, 1092 flow [2024-11-20 17:47:43,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:43,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:43,308 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:43,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-20 17:47:43,308 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:43,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:43,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1622378782, now seen corresponding path program 8 times [2024-11-20 17:47:43,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:43,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556355714] [2024-11-20 17:47:43,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:43,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:43,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:43,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556355714] [2024-11-20 17:47:43,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556355714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:43,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:43,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:43,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777323481] [2024-11-20 17:47:43,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:43,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:43,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:43,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:43,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:43,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:43,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 134 transitions, 1092 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:43,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:43,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:43,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:44,419 INFO L124 PetriNetUnfolderBase]: 2139/3846 cut-off events. [2024-11-20 17:47:44,419 INFO L125 PetriNetUnfolderBase]: For 22314/22362 co-relation queries the response was YES. [2024-11-20 17:47:44,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14462 conditions, 3846 events. 2139/3846 cut-off events. For 22314/22362 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 24558 event pairs, 663 based on Foata normal form. 11/3730 useless extension candidates. Maximal degree in co-relation 14389. Up to 2847 conditions per place. [2024-11-20 17:47:44,439 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 152 selfloop transitions, 37 changer transitions 3/199 dead transitions. [2024-11-20 17:47:44,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 199 transitions, 1881 flow [2024-11-20 17:47:44,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:47:44,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:47:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-11-20 17:47:44,441 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-20 17:47:44,441 INFO L175 Difference]: Start difference. First operand has 135 places, 134 transitions, 1092 flow. Second operand 11 states and 279 transitions. [2024-11-20 17:47:44,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 199 transitions, 1881 flow [2024-11-20 17:47:44,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 199 transitions, 1751 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-11-20 17:47:44,476 INFO L231 Difference]: Finished difference. Result has 143 places, 143 transitions, 1178 flow [2024-11-20 17:47:44,476 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1178, PETRI_PLACES=143, PETRI_TRANSITIONS=143} [2024-11-20 17:47:44,477 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 82 predicate places. [2024-11-20 17:47:44,478 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 1178 flow [2024-11-20 17:47:44,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:44,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:44,478 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:44,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-20 17:47:44,478 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:44,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:44,479 INFO L85 PathProgramCache]: Analyzing trace with hash -2106684206, now seen corresponding path program 9 times [2024-11-20 17:47:44,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:44,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824001116] [2024-11-20 17:47:44,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:44,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:45,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:45,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:45,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824001116] [2024-11-20 17:47:45,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824001116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:45,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:45,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:45,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376917358] [2024-11-20 17:47:45,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:45,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:45,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:45,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:45,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:45,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:45,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 143 transitions, 1178 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:45,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:45,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:45,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:45,763 INFO L124 PetriNetUnfolderBase]: 2305/4131 cut-off events. [2024-11-20 17:47:45,763 INFO L125 PetriNetUnfolderBase]: For 29056/29136 co-relation queries the response was YES. [2024-11-20 17:47:45,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16260 conditions, 4131 events. 2305/4131 cut-off events. For 29056/29136 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 26811 event pairs, 722 based on Foata normal form. 9/3998 useless extension candidates. Maximal degree in co-relation 16183. Up to 3056 conditions per place. [2024-11-20 17:47:45,785 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 160 selfloop transitions, 38 changer transitions 3/208 dead transitions. [2024-11-20 17:47:45,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 208 transitions, 2018 flow [2024-11-20 17:47:45,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:47:45,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:47:45,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-20 17:47:45,786 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-20 17:47:45,787 INFO L175 Difference]: Start difference. First operand has 143 places, 143 transitions, 1178 flow. Second operand 11 states and 282 transitions. [2024-11-20 17:47:45,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 208 transitions, 2018 flow [2024-11-20 17:47:45,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 208 transitions, 1886 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-11-20 17:47:45,818 INFO L231 Difference]: Finished difference. Result has 151 places, 150 transitions, 1280 flow [2024-11-20 17:47:45,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1280, PETRI_PLACES=151, PETRI_TRANSITIONS=150} [2024-11-20 17:47:45,819 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 90 predicate places. [2024-11-20 17:47:45,819 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 150 transitions, 1280 flow [2024-11-20 17:47:45,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:45,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:45,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:45,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-20 17:47:45,820 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:45,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:45,820 INFO L85 PathProgramCache]: Analyzing trace with hash -788811030, now seen corresponding path program 10 times [2024-11-20 17:47:45,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:45,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197530590] [2024-11-20 17:47:45,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:45,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:46,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:46,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:46,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197530590] [2024-11-20 17:47:46,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197530590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:46,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:46,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:46,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203572054] [2024-11-20 17:47:46,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:46,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:46,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:46,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:46,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:46,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:46,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 150 transitions, 1280 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:46,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:46,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:46,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:46,896 INFO L124 PetriNetUnfolderBase]: 2366/4235 cut-off events. [2024-11-20 17:47:46,896 INFO L125 PetriNetUnfolderBase]: For 34293/34413 co-relation queries the response was YES. [2024-11-20 17:47:46,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17046 conditions, 4235 events. 2366/4235 cut-off events. For 34293/34413 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 27586 event pairs, 824 based on Foata normal form. 23/4118 useless extension candidates. Maximal degree in co-relation 16965. Up to 3295 conditions per place. [2024-11-20 17:47:46,926 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 154 selfloop transitions, 37 changer transitions 4/202 dead transitions. [2024-11-20 17:47:46,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 202 transitions, 1968 flow [2024-11-20 17:47:46,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:47:46,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:47:46,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-11-20 17:47:46,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2024-11-20 17:47:46,927 INFO L175 Difference]: Start difference. First operand has 151 places, 150 transitions, 1280 flow. Second operand 11 states and 269 transitions. [2024-11-20 17:47:46,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 202 transitions, 1968 flow [2024-11-20 17:47:46,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 202 transitions, 1824 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-11-20 17:47:46,982 INFO L231 Difference]: Finished difference. Result has 158 places, 156 transitions, 1307 flow [2024-11-20 17:47:46,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1307, PETRI_PLACES=158, PETRI_TRANSITIONS=156} [2024-11-20 17:47:46,982 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 97 predicate places. [2024-11-20 17:47:46,983 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 156 transitions, 1307 flow [2024-11-20 17:47:46,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:46,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:46,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:46,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-20 17:47:46,983 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:46,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:46,984 INFO L85 PathProgramCache]: Analyzing trace with hash -324453426, now seen corresponding path program 11 times [2024-11-20 17:47:46,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:46,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797675400] [2024-11-20 17:47:46,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:46,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:47,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:47,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797675400] [2024-11-20 17:47:47,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797675400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:47,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:47,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:47,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716318786] [2024-11-20 17:47:47,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:47,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:47,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:47,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:47,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:47,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:47,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 156 transitions, 1307 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:47,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:47,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:47,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:48,447 INFO L124 PetriNetUnfolderBase]: 2517/4479 cut-off events. [2024-11-20 17:47:48,447 INFO L125 PetriNetUnfolderBase]: For 35209/35289 co-relation queries the response was YES. [2024-11-20 17:47:48,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18050 conditions, 4479 events. 2517/4479 cut-off events. For 35209/35289 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 29543 event pairs, 856 based on Foata normal form. 29/4372 useless extension candidates. Maximal degree in co-relation 17965. Up to 3319 conditions per place. [2024-11-20 17:47:48,471 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 165 selfloop transitions, 43 changer transitions 3/218 dead transitions. [2024-11-20 17:47:48,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 218 transitions, 2177 flow [2024-11-20 17:47:48,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:47:48,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:47:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-11-20 17:47:48,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-11-20 17:47:48,473 INFO L175 Difference]: Start difference. First operand has 158 places, 156 transitions, 1307 flow. Second operand 11 states and 280 transitions. [2024-11-20 17:47:48,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 218 transitions, 2177 flow [2024-11-20 17:47:48,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 218 transitions, 2065 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-11-20 17:47:48,515 INFO L231 Difference]: Finished difference. Result has 165 places, 163 transitions, 1472 flow [2024-11-20 17:47:48,515 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1472, PETRI_PLACES=165, PETRI_TRANSITIONS=163} [2024-11-20 17:47:48,516 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 104 predicate places. [2024-11-20 17:47:48,516 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 163 transitions, 1472 flow [2024-11-20 17:47:48,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:48,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:48,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:48,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-20 17:47:48,516 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:48,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:48,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1217833348, now seen corresponding path program 12 times [2024-11-20 17:47:48,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:48,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464747390] [2024-11-20 17:47:48,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:48,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:48,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:48,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464747390] [2024-11-20 17:47:48,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464747390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:48,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:48,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:48,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563066138] [2024-11-20 17:47:48,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:48,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:48,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:48,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:48,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:49,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:49,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 163 transitions, 1472 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:49,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:49,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:49,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:49,649 INFO L124 PetriNetUnfolderBase]: 2517/4483 cut-off events. [2024-11-20 17:47:49,649 INFO L125 PetriNetUnfolderBase]: For 41879/41941 co-relation queries the response was YES. [2024-11-20 17:47:49,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18682 conditions, 4483 events. 2517/4483 cut-off events. For 41879/41941 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 29577 event pairs, 878 based on Foata normal form. 19/4360 useless extension candidates. Maximal degree in co-relation 18593. Up to 3477 conditions per place. [2024-11-20 17:47:49,682 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 170 selfloop transitions, 38 changer transitions 4/219 dead transitions. [2024-11-20 17:47:49,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 219 transitions, 2223 flow [2024-11-20 17:47:49,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:47:49,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:47:49,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-11-20 17:47:49,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-11-20 17:47:49,683 INFO L175 Difference]: Start difference. First operand has 165 places, 163 transitions, 1472 flow. Second operand 11 states and 276 transitions. [2024-11-20 17:47:49,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 219 transitions, 2223 flow [2024-11-20 17:47:49,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 219 transitions, 2053 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-11-20 17:47:49,756 INFO L231 Difference]: Finished difference. Result has 171 places, 167 transitions, 1431 flow [2024-11-20 17:47:49,756 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1431, PETRI_PLACES=171, PETRI_TRANSITIONS=167} [2024-11-20 17:47:49,756 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 110 predicate places. [2024-11-20 17:47:49,757 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 167 transitions, 1431 flow [2024-11-20 17:47:49,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:49,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:49,757 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:49,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-20 17:47:49,757 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:49,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:49,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1014499284, now seen corresponding path program 13 times [2024-11-20 17:47:49,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:49,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189907598] [2024-11-20 17:47:49,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:49,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:50,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:50,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189907598] [2024-11-20 17:47:50,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189907598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:50,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:50,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:50,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143319056] [2024-11-20 17:47:50,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:50,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:50,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:50,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:50,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:50,271 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:50,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 167 transitions, 1431 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:50,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:50,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:50,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:50,852 INFO L124 PetriNetUnfolderBase]: 2517/4475 cut-off events. [2024-11-20 17:47:50,852 INFO L125 PetriNetUnfolderBase]: For 36790/36874 co-relation queries the response was YES. [2024-11-20 17:47:50,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18143 conditions, 4475 events. 2517/4475 cut-off events. For 36790/36874 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 29530 event pairs, 882 based on Foata normal form. 35/4376 useless extension candidates. Maximal degree in co-relation 18051. Up to 3473 conditions per place. [2024-11-20 17:47:50,886 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 168 selfloop transitions, 42 changer transitions 4/221 dead transitions. [2024-11-20 17:47:50,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 221 transitions, 2150 flow [2024-11-20 17:47:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:47:50,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:47:50,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-11-20 17:47:50,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-11-20 17:47:50,887 INFO L175 Difference]: Start difference. First operand has 171 places, 167 transitions, 1431 flow. Second operand 11 states and 275 transitions. [2024-11-20 17:47:50,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 221 transitions, 2150 flow [2024-11-20 17:47:50,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 221 transitions, 2042 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-11-20 17:47:50,936 INFO L231 Difference]: Finished difference. Result has 175 places, 171 transitions, 1471 flow [2024-11-20 17:47:50,937 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1471, PETRI_PLACES=175, PETRI_TRANSITIONS=171} [2024-11-20 17:47:50,937 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 114 predicate places. [2024-11-20 17:47:50,937 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 171 transitions, 1471 flow [2024-11-20 17:47:50,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:50,937 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:50,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:50,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-20 17:47:50,938 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:50,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:50,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1582921742, now seen corresponding path program 14 times [2024-11-20 17:47:50,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:50,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419252455] [2024-11-20 17:47:50,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:50,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:51,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:51,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:51,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419252455] [2024-11-20 17:47:51,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419252455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:51,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:51,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:51,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495707480] [2024-11-20 17:47:51,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:51,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:51,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:51,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:51,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:51,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:51,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 171 transitions, 1471 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:51,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:51,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:51,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:52,077 INFO L124 PetriNetUnfolderBase]: 2553/4541 cut-off events. [2024-11-20 17:47:52,078 INFO L125 PetriNetUnfolderBase]: For 37036/37120 co-relation queries the response was YES. [2024-11-20 17:47:52,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18317 conditions, 4541 events. 2553/4541 cut-off events. For 37036/37120 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 30160 event pairs, 944 based on Foata normal form. 35/4430 useless extension candidates. Maximal degree in co-relation 18223. Up to 3607 conditions per place. [2024-11-20 17:47:52,113 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 172 selfloop transitions, 38 changer transitions 3/220 dead transitions. [2024-11-20 17:47:52,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 220 transitions, 2165 flow [2024-11-20 17:47:52,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:47:52,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:47:52,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-11-20 17:47:52,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2024-11-20 17:47:52,114 INFO L175 Difference]: Start difference. First operand has 175 places, 171 transitions, 1471 flow. Second operand 11 states and 269 transitions. [2024-11-20 17:47:52,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 220 transitions, 2165 flow [2024-11-20 17:47:52,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 220 transitions, 2039 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-11-20 17:47:52,172 INFO L231 Difference]: Finished difference. Result has 179 places, 174 transitions, 1473 flow [2024-11-20 17:47:52,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1473, PETRI_PLACES=179, PETRI_TRANSITIONS=174} [2024-11-20 17:47:52,172 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 118 predicate places. [2024-11-20 17:47:52,172 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 174 transitions, 1473 flow [2024-11-20 17:47:52,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:52,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:52,173 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:52,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-20 17:47:52,173 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:52,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:52,173 INFO L85 PathProgramCache]: Analyzing trace with hash 927000246, now seen corresponding path program 15 times [2024-11-20 17:47:52,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:52,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496748324] [2024-11-20 17:47:52,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:52,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:52,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:52,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496748324] [2024-11-20 17:47:52,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496748324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:52,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:52,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:52,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355941317] [2024-11-20 17:47:52,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:52,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:52,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:52,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:52,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:52,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:52,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 174 transitions, 1473 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:52,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:52,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:52,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:53,209 INFO L124 PetriNetUnfolderBase]: 2553/4554 cut-off events. [2024-11-20 17:47:53,210 INFO L125 PetriNetUnfolderBase]: For 36400/36484 co-relation queries the response was YES. [2024-11-20 17:47:53,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18197 conditions, 4554 events. 2553/4554 cut-off events. For 36400/36484 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 30341 event pairs, 951 based on Foata normal form. 27/4435 useless extension candidates. Maximal degree in co-relation 18101. Up to 3620 conditions per place. [2024-11-20 17:47:53,245 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 174 selfloop transitions, 36 changer transitions 3/220 dead transitions. [2024-11-20 17:47:53,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 220 transitions, 2139 flow [2024-11-20 17:47:53,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:47:53,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:47:53,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2024-11-20 17:47:53,247 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-11-20 17:47:53,247 INFO L175 Difference]: Start difference. First operand has 179 places, 174 transitions, 1473 flow. Second operand 11 states and 266 transitions. [2024-11-20 17:47:53,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 220 transitions, 2139 flow [2024-11-20 17:47:53,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 220 transitions, 2029 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-11-20 17:47:53,300 INFO L231 Difference]: Finished difference. Result has 183 places, 176 transitions, 1461 flow [2024-11-20 17:47:53,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1461, PETRI_PLACES=183, PETRI_TRANSITIONS=176} [2024-11-20 17:47:53,300 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 122 predicate places. [2024-11-20 17:47:53,300 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 176 transitions, 1461 flow [2024-11-20 17:47:53,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:53,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:53,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:53,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-20 17:47:53,301 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:53,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:53,301 INFO L85 PathProgramCache]: Analyzing trace with hash 611290964, now seen corresponding path program 16 times [2024-11-20 17:47:53,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:53,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439029495] [2024-11-20 17:47:53,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:53,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:53,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:53,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:53,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439029495] [2024-11-20 17:47:53,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439029495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:53,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:53,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:53,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694080888] [2024-11-20 17:47:53,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:53,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:53,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:53,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:53,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:53,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:53,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 176 transitions, 1461 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:53,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:53,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:53,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:54,653 INFO L124 PetriNetUnfolderBase]: 2792/5008 cut-off events. [2024-11-20 17:47:54,654 INFO L125 PetriNetUnfolderBase]: For 47389/47449 co-relation queries the response was YES. [2024-11-20 17:47:54,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20801 conditions, 5008 events. 2792/5008 cut-off events. For 47389/47449 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 34447 event pairs, 960 based on Foata normal form. 13/4864 useless extension candidates. Maximal degree in co-relation 20703. Up to 3655 conditions per place. [2024-11-20 17:47:54,695 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 201 selfloop transitions, 45 changer transitions 3/256 dead transitions. [2024-11-20 17:47:54,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 256 transitions, 2586 flow [2024-11-20 17:47:54,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:47:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 17:47:54,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 309 transitions. [2024-11-20 17:47:54,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-11-20 17:47:54,696 INFO L175 Difference]: Start difference. First operand has 183 places, 176 transitions, 1461 flow. Second operand 12 states and 309 transitions. [2024-11-20 17:47:54,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 256 transitions, 2586 flow [2024-11-20 17:47:54,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 256 transitions, 2516 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-20 17:47:54,755 INFO L231 Difference]: Finished difference. Result has 190 places, 188 transitions, 1734 flow [2024-11-20 17:47:54,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1734, PETRI_PLACES=190, PETRI_TRANSITIONS=188} [2024-11-20 17:47:54,756 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 129 predicate places. [2024-11-20 17:47:54,756 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 188 transitions, 1734 flow [2024-11-20 17:47:54,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:54,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:54,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:54,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-20 17:47:54,756 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:54,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:54,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1043050992, now seen corresponding path program 17 times [2024-11-20 17:47:54,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:54,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576582631] [2024-11-20 17:47:54,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:54,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:55,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:55,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:55,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576582631] [2024-11-20 17:47:55,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576582631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:55,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:55,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:55,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536830167] [2024-11-20 17:47:55,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:55,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:55,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:55,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:55,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:55,251 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:55,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 188 transitions, 1734 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:55,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:55,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:55,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:56,044 INFO L124 PetriNetUnfolderBase]: 2993/5377 cut-off events. [2024-11-20 17:47:56,044 INFO L125 PetriNetUnfolderBase]: For 64972/65120 co-relation queries the response was YES. [2024-11-20 17:47:56,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23822 conditions, 5377 events. 2993/5377 cut-off events. For 64972/65120 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 37689 event pairs, 978 based on Foata normal form. 43/5260 useless extension candidates. Maximal degree in co-relation 23720. Up to 3842 conditions per place. [2024-11-20 17:47:56,098 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 199 selfloop transitions, 55 changer transitions 3/264 dead transitions. [2024-11-20 17:47:56,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 264 transitions, 2935 flow [2024-11-20 17:47:56,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:47:56,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 17:47:56,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 308 transitions. [2024-11-20 17:47:56,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-11-20 17:47:56,099 INFO L175 Difference]: Start difference. First operand has 190 places, 188 transitions, 1734 flow. Second operand 12 states and 308 transitions. [2024-11-20 17:47:56,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 264 transitions, 2935 flow [2024-11-20 17:47:56,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 264 transitions, 2705 flow, removed 97 selfloop flow, removed 5 redundant places. [2024-11-20 17:47:56,177 INFO L231 Difference]: Finished difference. Result has 200 places, 199 transitions, 1917 flow [2024-11-20 17:47:56,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1526, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1917, PETRI_PLACES=200, PETRI_TRANSITIONS=199} [2024-11-20 17:47:56,177 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 139 predicate places. [2024-11-20 17:47:56,177 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 199 transitions, 1917 flow [2024-11-20 17:47:56,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:56,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:56,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:56,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-20 17:47:56,178 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:56,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:56,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1248608742, now seen corresponding path program 18 times [2024-11-20 17:47:56,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:56,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064998071] [2024-11-20 17:47:56,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:56,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:56,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:56,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064998071] [2024-11-20 17:47:56,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064998071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:56,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:56,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:56,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784255360] [2024-11-20 17:47:56,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:56,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:56,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:56,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:56,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:56,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:56,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 199 transitions, 1917 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:56,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:56,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:56,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:57,545 INFO L124 PetriNetUnfolderBase]: 3089/5543 cut-off events. [2024-11-20 17:47:57,546 INFO L125 PetriNetUnfolderBase]: For 77663/77781 co-relation queries the response was YES. [2024-11-20 17:47:57,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25332 conditions, 5543 events. 3089/5543 cut-off events. For 77663/77781 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 39108 event pairs, 1076 based on Foata normal form. 19/5401 useless extension candidates. Maximal degree in co-relation 25225. Up to 4114 conditions per place. [2024-11-20 17:47:57,608 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 208 selfloop transitions, 50 changer transitions 3/268 dead transitions. [2024-11-20 17:47:57,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 268 transitions, 3005 flow [2024-11-20 17:47:57,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:47:57,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 17:47:57,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 305 transitions. [2024-11-20 17:47:57,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4099462365591398 [2024-11-20 17:47:57,610 INFO L175 Difference]: Start difference. First operand has 200 places, 199 transitions, 1917 flow. Second operand 12 states and 305 transitions. [2024-11-20 17:47:57,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 268 transitions, 3005 flow [2024-11-20 17:47:57,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 268 transitions, 2788 flow, removed 83 selfloop flow, removed 7 redundant places. [2024-11-20 17:47:57,719 INFO L231 Difference]: Finished difference. Result has 207 places, 205 transitions, 1970 flow [2024-11-20 17:47:57,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1970, PETRI_PLACES=207, PETRI_TRANSITIONS=205} [2024-11-20 17:47:57,720 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 146 predicate places. [2024-11-20 17:47:57,720 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 205 transitions, 1970 flow [2024-11-20 17:47:57,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:57,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:57,720 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:57,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-20 17:47:57,721 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:57,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:57,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1749769300, now seen corresponding path program 19 times [2024-11-20 17:47:57,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:57,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767743605] [2024-11-20 17:47:57,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:57,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:58,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:58,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:58,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767743605] [2024-11-20 17:47:58,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767743605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:58,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:58,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:58,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314547406] [2024-11-20 17:47:58,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:58,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:58,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:58,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:58,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:58,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:58,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 205 transitions, 1970 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:58,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:58,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:58,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:59,123 INFO L124 PetriNetUnfolderBase]: 3089/5561 cut-off events. [2024-11-20 17:47:59,123 INFO L125 PetriNetUnfolderBase]: For 76277/76361 co-relation queries the response was YES. [2024-11-20 17:47:59,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25156 conditions, 5561 events. 3089/5561 cut-off events. For 76277/76361 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 39355 event pairs, 1096 based on Foata normal form. 35/5433 useless extension candidates. Maximal degree in co-relation 25046. Up to 4191 conditions per place. [2024-11-20 17:47:59,174 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 205 selfloop transitions, 52 changer transitions 4/268 dead transitions. [2024-11-20 17:47:59,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 268 transitions, 2932 flow [2024-11-20 17:47:59,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:47:59,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 17:47:59,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 302 transitions. [2024-11-20 17:47:59,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2024-11-20 17:47:59,176 INFO L175 Difference]: Start difference. First operand has 207 places, 205 transitions, 1970 flow. Second operand 12 states and 302 transitions. [2024-11-20 17:47:59,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 268 transitions, 2932 flow [2024-11-20 17:47:59,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 268 transitions, 2773 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-11-20 17:47:59,309 INFO L231 Difference]: Finished difference. Result has 212 places, 209 transitions, 1993 flow [2024-11-20 17:47:59,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1811, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1993, PETRI_PLACES=212, PETRI_TRANSITIONS=209} [2024-11-20 17:47:59,309 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 151 predicate places. [2024-11-20 17:47:59,309 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 209 transitions, 1993 flow [2024-11-20 17:47:59,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:59,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:59,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:59,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-20 17:47:59,310 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:47:59,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:59,310 INFO L85 PathProgramCache]: Analyzing trace with hash -575312784, now seen corresponding path program 20 times [2024-11-20 17:47:59,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:59,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371910331] [2024-11-20 17:47:59,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:59,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:59,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:47:59,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:59,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371910331] [2024-11-20 17:47:59,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371910331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:59,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:59,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:47:59,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625793219] [2024-11-20 17:47:59,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:59,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:47:59,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:59,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:47:59,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:47:59,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:47:59,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 209 transitions, 1993 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:47:59,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:59,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:47:59,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:00,844 INFO L124 PetriNetUnfolderBase]: 3295/5907 cut-off events. [2024-11-20 17:48:00,844 INFO L125 PetriNetUnfolderBase]: For 89675/89946 co-relation queries the response was YES. [2024-11-20 17:48:00,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27793 conditions, 5907 events. 3295/5907 cut-off events. For 89675/89946 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 42221 event pairs, 1317 based on Foata normal form. 41/5760 useless extension candidates. Maximal degree in co-relation 27681. Up to 4637 conditions per place. [2024-11-20 17:48:00,903 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 229 selfloop transitions, 38 changer transitions 3/277 dead transitions. [2024-11-20 17:48:00,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 277 transitions, 3242 flow [2024-11-20 17:48:00,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:48:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:48:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 285 transitions. [2024-11-20 17:48:00,904 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4178885630498534 [2024-11-20 17:48:00,904 INFO L175 Difference]: Start difference. First operand has 212 places, 209 transitions, 1993 flow. Second operand 11 states and 285 transitions. [2024-11-20 17:48:00,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 277 transitions, 3242 flow [2024-11-20 17:48:01,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 277 transitions, 3082 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-11-20 17:48:01,149 INFO L231 Difference]: Finished difference. Result has 217 places, 219 transitions, 2200 flow [2024-11-20 17:48:01,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1843, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2200, PETRI_PLACES=217, PETRI_TRANSITIONS=219} [2024-11-20 17:48:01,149 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 156 predicate places. [2024-11-20 17:48:01,149 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 219 transitions, 2200 flow [2024-11-20 17:48:01,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:01,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:01,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:01,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-20 17:48:01,150 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:48:01,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:01,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1539198066, now seen corresponding path program 21 times [2024-11-20 17:48:01,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:01,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193746743] [2024-11-20 17:48:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:01,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:01,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:48:01,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:01,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193746743] [2024-11-20 17:48:01,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193746743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:01,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:01,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:48:01,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825202045] [2024-11-20 17:48:01,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:01,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:48:01,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:01,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:48:01,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:48:01,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:48:01,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 219 transitions, 2200 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:01,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:01,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:48:01,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:02,700 INFO L124 PetriNetUnfolderBase]: 3356/6019 cut-off events. [2024-11-20 17:48:02,700 INFO L125 PetriNetUnfolderBase]: For 105636/106032 co-relation queries the response was YES. [2024-11-20 17:48:02,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28688 conditions, 6019 events. 3356/6019 cut-off events. For 105636/106032 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 43270 event pairs, 1418 based on Foata normal form. 55/5881 useless extension candidates. Maximal degree in co-relation 28572. Up to 4876 conditions per place. [2024-11-20 17:48:02,758 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 223 selfloop transitions, 37 changer transitions 4/271 dead transitions. [2024-11-20 17:48:02,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 271 transitions, 3166 flow [2024-11-20 17:48:02,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:48:02,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:48:02,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-11-20 17:48:02,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-11-20 17:48:02,760 INFO L175 Difference]: Start difference. First operand has 217 places, 219 transitions, 2200 flow. Second operand 11 states and 272 transitions. [2024-11-20 17:48:02,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 271 transitions, 3166 flow [2024-11-20 17:48:02,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 271 transitions, 2924 flow, removed 103 selfloop flow, removed 5 redundant places. [2024-11-20 17:48:02,884 INFO L231 Difference]: Finished difference. Result has 225 places, 225 transitions, 2185 flow [2024-11-20 17:48:02,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2185, PETRI_PLACES=225, PETRI_TRANSITIONS=225} [2024-11-20 17:48:02,885 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 164 predicate places. [2024-11-20 17:48:02,885 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 225 transitions, 2185 flow [2024-11-20 17:48:02,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:02,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:02,885 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:02,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-20 17:48:02,886 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:48:02,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:02,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1685242390, now seen corresponding path program 22 times [2024-11-20 17:48:02,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:02,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407092840] [2024-11-20 17:48:02,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:02,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:48:03,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:03,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407092840] [2024-11-20 17:48:03,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407092840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:03,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:03,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:48:03,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782384422] [2024-11-20 17:48:03,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:03,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:48:03,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:03,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:48:03,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:48:03,483 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:48:03,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 225 transitions, 2185 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:03,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:03,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:48:03,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:04,397 INFO L124 PetriNetUnfolderBase]: 3492/6263 cut-off events. [2024-11-20 17:48:04,397 INFO L125 PetriNetUnfolderBase]: For 91059/91279 co-relation queries the response was YES. [2024-11-20 17:48:04,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29087 conditions, 6263 events. 3492/6263 cut-off events. For 91059/91279 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 45504 event pairs, 1425 based on Foata normal form. 61/6125 useless extension candidates. Maximal degree in co-relation 28967. Up to 4900 conditions per place. [2024-11-20 17:48:04,450 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 234 selfloop transitions, 43 changer transitions 3/287 dead transitions. [2024-11-20 17:48:04,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 287 transitions, 3377 flow [2024-11-20 17:48:04,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:48:04,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:48:04,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-11-20 17:48:04,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4149560117302053 [2024-11-20 17:48:04,452 INFO L175 Difference]: Start difference. First operand has 225 places, 225 transitions, 2185 flow. Second operand 11 states and 283 transitions. [2024-11-20 17:48:04,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 287 transitions, 3377 flow [2024-11-20 17:48:04,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 287 transitions, 3231 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-11-20 17:48:04,572 INFO L231 Difference]: Finished difference. Result has 232 places, 232 transitions, 2384 flow [2024-11-20 17:48:04,572 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2384, PETRI_PLACES=232, PETRI_TRANSITIONS=232} [2024-11-20 17:48:04,572 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 171 predicate places. [2024-11-20 17:48:04,573 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 232 transitions, 2384 flow [2024-11-20 17:48:04,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:04,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:04,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:04,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-20 17:48:04,573 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:48:04,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:04,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1632758878, now seen corresponding path program 23 times [2024-11-20 17:48:04,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:04,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268806092] [2024-11-20 17:48:04,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:04,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:48:05,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:05,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268806092] [2024-11-20 17:48:05,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268806092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:05,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:05,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:48:05,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054891413] [2024-11-20 17:48:05,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:05,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:48:05,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:05,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:48:05,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:48:05,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:48:05,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 232 transitions, 2384 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:05,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:05,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:48:05,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:06,139 INFO L124 PetriNetUnfolderBase]: 3605/6479 cut-off events. [2024-11-20 17:48:06,139 INFO L125 PetriNetUnfolderBase]: For 115110/115341 co-relation queries the response was YES. [2024-11-20 17:48:06,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31205 conditions, 6479 events. 3605/6479 cut-off events. For 115110/115341 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 47526 event pairs, 1507 based on Foata normal form. 51/6316 useless extension candidates. Maximal degree in co-relation 31081. Up to 5207 conditions per place. [2024-11-20 17:48:06,205 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 250 selfloop transitions, 36 changer transitions 3/296 dead transitions. [2024-11-20 17:48:06,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 296 transitions, 3674 flow [2024-11-20 17:48:06,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:48:06,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:48:06,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-20 17:48:06,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-20 17:48:06,206 INFO L175 Difference]: Start difference. First operand has 232 places, 232 transitions, 2384 flow. Second operand 11 states and 282 transitions. [2024-11-20 17:48:06,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 296 transitions, 3674 flow [2024-11-20 17:48:06,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 296 transitions, 3436 flow, removed 98 selfloop flow, removed 6 redundant places. [2024-11-20 17:48:06,409 INFO L231 Difference]: Finished difference. Result has 240 places, 239 transitions, 2480 flow [2024-11-20 17:48:06,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2480, PETRI_PLACES=240, PETRI_TRANSITIONS=239} [2024-11-20 17:48:06,410 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 179 predicate places. [2024-11-20 17:48:06,410 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 239 transitions, 2480 flow [2024-11-20 17:48:06,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:06,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:06,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:06,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-20 17:48:06,410 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:48:06,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:06,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1494730126, now seen corresponding path program 24 times [2024-11-20 17:48:06,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:06,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975373763] [2024-11-20 17:48:06,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:06,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:06,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:48:06,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:06,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975373763] [2024-11-20 17:48:06,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975373763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:06,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:06,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:48:06,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078313119] [2024-11-20 17:48:06,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:06,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:48:06,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:06,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:48:06,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:48:06,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:48:06,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 239 transitions, 2480 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:06,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:06,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:48:06,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:07,919 INFO L124 PetriNetUnfolderBase]: 3710/6698 cut-off events. [2024-11-20 17:48:07,920 INFO L125 PetriNetUnfolderBase]: For 130853/131092 co-relation queries the response was YES. [2024-11-20 17:48:07,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32313 conditions, 6698 events. 3710/6698 cut-off events. For 130853/131092 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 49744 event pairs, 1564 based on Foata normal form. 53/6531 useless extension candidates. Maximal degree in co-relation 32184. Up to 5385 conditions per place. [2024-11-20 17:48:07,989 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 256 selfloop transitions, 36 changer transitions 3/302 dead transitions. [2024-11-20 17:48:07,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 302 transitions, 3712 flow [2024-11-20 17:48:07,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:48:07,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:48:07,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-20 17:48:07,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-20 17:48:07,990 INFO L175 Difference]: Start difference. First operand has 240 places, 239 transitions, 2480 flow. Second operand 11 states and 282 transitions. [2024-11-20 17:48:07,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 302 transitions, 3712 flow [2024-11-20 17:48:08,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 302 transitions, 3488 flow, removed 94 selfloop flow, removed 5 redundant places. [2024-11-20 17:48:08,180 INFO L231 Difference]: Finished difference. Result has 248 places, 245 transitions, 2517 flow [2024-11-20 17:48:08,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2256, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2517, PETRI_PLACES=248, PETRI_TRANSITIONS=245} [2024-11-20 17:48:08,181 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 187 predicate places. [2024-11-20 17:48:08,181 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 245 transitions, 2517 flow [2024-11-20 17:48:08,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:08,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:08,181 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:08,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-20 17:48:08,181 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:48:08,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:08,181 INFO L85 PathProgramCache]: Analyzing trace with hash 201426106, now seen corresponding path program 25 times [2024-11-20 17:48:08,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:08,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566950999] [2024-11-20 17:48:08,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:08,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:08,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:48:08,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:08,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566950999] [2024-11-20 17:48:08,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566950999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:08,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:08,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:48:08,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313165560] [2024-11-20 17:48:08,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:08,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:48:08,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:08,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:48:08,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:48:08,664 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:48:08,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 245 transitions, 2517 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:08,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:08,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:48:08,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:09,922 INFO L124 PetriNetUnfolderBase]: 3710/6673 cut-off events. [2024-11-20 17:48:09,922 INFO L125 PetriNetUnfolderBase]: For 130480/130714 co-relation queries the response was YES. [2024-11-20 17:48:09,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31996 conditions, 6673 events. 3710/6673 cut-off events. For 130480/130714 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 49612 event pairs, 1592 based on Foata normal form. 59/6507 useless extension candidates. Maximal degree in co-relation 31863. Up to 5462 conditions per place. [2024-11-20 17:48:10,007 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 252 selfloop transitions, 35 changer transitions 3/297 dead transitions. [2024-11-20 17:48:10,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 297 transitions, 3556 flow [2024-11-20 17:48:10,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:48:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:48:10,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 273 transitions. [2024-11-20 17:48:10,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4002932551319648 [2024-11-20 17:48:10,009 INFO L175 Difference]: Start difference. First operand has 248 places, 245 transitions, 2517 flow. Second operand 11 states and 273 transitions. [2024-11-20 17:48:10,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 297 transitions, 3556 flow [2024-11-20 17:48:10,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 297 transitions, 3369 flow, removed 74 selfloop flow, removed 6 redundant places. [2024-11-20 17:48:10,244 INFO L231 Difference]: Finished difference. Result has 254 places, 248 transitions, 2465 flow [2024-11-20 17:48:10,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2465, PETRI_PLACES=254, PETRI_TRANSITIONS=248} [2024-11-20 17:48:10,245 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 193 predicate places. [2024-11-20 17:48:10,245 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 248 transitions, 2465 flow [2024-11-20 17:48:10,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:10,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:10,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:10,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-20 17:48:10,246 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:48:10,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:10,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1618897196, now seen corresponding path program 26 times [2024-11-20 17:48:10,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:10,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958039002] [2024-11-20 17:48:10,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:10,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:48:10,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:10,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958039002] [2024-11-20 17:48:10,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958039002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:10,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:10,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:48:10,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42796837] [2024-11-20 17:48:10,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:10,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:48:10,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:10,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:48:10,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:48:10,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:48:10,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 248 transitions, 2465 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:10,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:10,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:48:10,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:11,832 INFO L124 PetriNetUnfolderBase]: 3806/6883 cut-off events. [2024-11-20 17:48:11,832 INFO L125 PetriNetUnfolderBase]: For 134593/134807 co-relation queries the response was YES. [2024-11-20 17:48:11,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33113 conditions, 6883 events. 3806/6883 cut-off events. For 134593/134807 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 51571 event pairs, 1666 based on Foata normal form. 48/6703 useless extension candidates. Maximal degree in co-relation 32977. Up to 5545 conditions per place. [2024-11-20 17:48:11,895 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 263 selfloop transitions, 37 changer transitions 3/310 dead transitions. [2024-11-20 17:48:11,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 310 transitions, 3736 flow [2024-11-20 17:48:11,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:48:11,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:48:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-20 17:48:11,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-20 17:48:11,897 INFO L175 Difference]: Start difference. First operand has 254 places, 248 transitions, 2465 flow. Second operand 11 states and 282 transitions. [2024-11-20 17:48:11,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 310 transitions, 3736 flow [2024-11-20 17:48:12,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 310 transitions, 3606 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-11-20 17:48:12,068 INFO L231 Difference]: Finished difference. Result has 259 places, 254 transitions, 2612 flow [2024-11-20 17:48:12,068 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2612, PETRI_PLACES=259, PETRI_TRANSITIONS=254} [2024-11-20 17:48:12,069 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 198 predicate places. [2024-11-20 17:48:12,069 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 254 transitions, 2612 flow [2024-11-20 17:48:12,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:12,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:12,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:12,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-20 17:48:12,069 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:48:12,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:12,069 INFO L85 PathProgramCache]: Analyzing trace with hash -689333314, now seen corresponding path program 27 times [2024-11-20 17:48:12,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:12,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854753413] [2024-11-20 17:48:12,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:12,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:12,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:48:12,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:12,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854753413] [2024-11-20 17:48:12,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854753413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:12,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:12,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:48:12,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259812941] [2024-11-20 17:48:12,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:12,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:48:12,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:12,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:48:12,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:48:12,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:48:12,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 254 transitions, 2612 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:12,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:12,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:48:12,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:13,442 INFO L124 PetriNetUnfolderBase]: 3806/6891 cut-off events. [2024-11-20 17:48:13,442 INFO L125 PetriNetUnfolderBase]: For 144132/144346 co-relation queries the response was YES. [2024-11-20 17:48:13,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33503 conditions, 6891 events. 3806/6891 cut-off events. For 144132/144346 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 51758 event pairs, 1665 based on Foata normal form. 54/6716 useless extension candidates. Maximal degree in co-relation 33364. Up to 5583 conditions per place. [2024-11-20 17:48:13,517 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 261 selfloop transitions, 38 changer transitions 4/310 dead transitions. [2024-11-20 17:48:13,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 310 transitions, 3707 flow [2024-11-20 17:48:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:48:13,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:48:13,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-11-20 17:48:13,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-20 17:48:13,518 INFO L175 Difference]: Start difference. First operand has 259 places, 254 transitions, 2612 flow. Second operand 11 states and 279 transitions. [2024-11-20 17:48:13,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 310 transitions, 3707 flow [2024-11-20 17:48:13,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 310 transitions, 3505 flow, removed 81 selfloop flow, removed 6 redundant places. [2024-11-20 17:48:13,858 INFO L231 Difference]: Finished difference. Result has 265 places, 258 transitions, 2561 flow [2024-11-20 17:48:13,858 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2561, PETRI_PLACES=265, PETRI_TRANSITIONS=258} [2024-11-20 17:48:13,858 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 204 predicate places. [2024-11-20 17:48:13,858 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 258 transitions, 2561 flow [2024-11-20 17:48:13,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:13,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:13,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:13,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-20 17:48:13,859 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:48:13,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:13,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1391138282, now seen corresponding path program 28 times [2024-11-20 17:48:13,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:13,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986667447] [2024-11-20 17:48:13,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:13,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:48:14,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:14,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986667447] [2024-11-20 17:48:14,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986667447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:14,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:14,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:48:14,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265387519] [2024-11-20 17:48:14,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:14,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:48:14,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:14,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:48:14,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:48:14,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:48:14,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 258 transitions, 2561 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:14,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:14,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:48:14,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:15,259 INFO L124 PetriNetUnfolderBase]: 3806/6889 cut-off events. [2024-11-20 17:48:15,259 INFO L125 PetriNetUnfolderBase]: For 137484/137722 co-relation queries the response was YES. [2024-11-20 17:48:15,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32992 conditions, 6889 events. 3806/6889 cut-off events. For 137484/137722 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 51728 event pairs, 1661 based on Foata normal form. 70/6732 useless extension candidates. Maximal degree in co-relation 32850. Up to 5579 conditions per place. [2024-11-20 17:48:15,338 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 259 selfloop transitions, 42 changer transitions 4/312 dead transitions. [2024-11-20 17:48:15,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 312 transitions, 3604 flow [2024-11-20 17:48:15,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:48:15,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:48:15,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 278 transitions. [2024-11-20 17:48:15,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-11-20 17:48:15,339 INFO L175 Difference]: Start difference. First operand has 265 places, 258 transitions, 2561 flow. Second operand 11 states and 278 transitions. [2024-11-20 17:48:15,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 312 transitions, 3604 flow [2024-11-20 17:48:15,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 312 transitions, 3468 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-11-20 17:48:15,532 INFO L231 Difference]: Finished difference. Result has 269 places, 262 transitions, 2595 flow [2024-11-20 17:48:15,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2595, PETRI_PLACES=269, PETRI_TRANSITIONS=262} [2024-11-20 17:48:15,533 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 208 predicate places. [2024-11-20 17:48:15,533 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 262 transitions, 2595 flow [2024-11-20 17:48:15,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:15,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:15,533 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:15,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-20 17:48:15,534 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:48:15,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:15,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1170107036, now seen corresponding path program 29 times [2024-11-20 17:48:15,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:15,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549529090] [2024-11-20 17:48:15,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:15,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:48:15,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:15,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549529090] [2024-11-20 17:48:15,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549529090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:15,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:15,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:48:15,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003594476] [2024-11-20 17:48:15,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:15,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:48:15,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:15,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:48:15,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:48:15,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:48:15,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 262 transitions, 2595 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:15,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:15,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:48:15,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:16,963 INFO L124 PetriNetUnfolderBase]: 3842/6955 cut-off events. [2024-11-20 17:48:16,963 INFO L125 PetriNetUnfolderBase]: For 136610/136848 co-relation queries the response was YES. [2024-11-20 17:48:17,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33048 conditions, 6955 events. 3842/6955 cut-off events. For 136610/136848 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 52338 event pairs, 1723 based on Foata normal form. 70/6786 useless extension candidates. Maximal degree in co-relation 32904. Up to 5713 conditions per place. [2024-11-20 17:48:17,041 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 263 selfloop transitions, 38 changer transitions 3/311 dead transitions. [2024-11-20 17:48:17,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 311 transitions, 3613 flow [2024-11-20 17:48:17,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:48:17,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:48:17,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-11-20 17:48:17,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-11-20 17:48:17,042 INFO L175 Difference]: Start difference. First operand has 269 places, 262 transitions, 2595 flow. Second operand 11 states and 272 transitions. [2024-11-20 17:48:17,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 311 transitions, 3613 flow [2024-11-20 17:48:17,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 311 transitions, 3459 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-11-20 17:48:17,233 INFO L231 Difference]: Finished difference. Result has 273 places, 265 transitions, 2591 flow [2024-11-20 17:48:17,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2441, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2591, PETRI_PLACES=273, PETRI_TRANSITIONS=265} [2024-11-20 17:48:17,234 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 212 predicate places. [2024-11-20 17:48:17,234 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 265 transitions, 2591 flow [2024-11-20 17:48:17,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:17,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:17,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:17,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-20 17:48:17,234 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:48:17,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:17,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1826028532, now seen corresponding path program 30 times [2024-11-20 17:48:17,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:17,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131137287] [2024-11-20 17:48:17,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:17,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:17,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:48:17,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:17,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131137287] [2024-11-20 17:48:17,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131137287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:17,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:17,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:48:17,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850626974] [2024-11-20 17:48:17,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:17,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:48:17,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:17,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:48:17,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:48:17,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:48:17,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 265 transitions, 2591 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:17,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:17,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:48:17,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:18,795 INFO L124 PetriNetUnfolderBase]: 3842/6968 cut-off events. [2024-11-20 17:48:18,795 INFO L125 PetriNetUnfolderBase]: For 134281/134519 co-relation queries the response was YES. [2024-11-20 17:48:18,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32797 conditions, 6968 events. 3842/6968 cut-off events. For 134281/134519 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 52598 event pairs, 1730 based on Foata normal form. 62/6791 useless extension candidates. Maximal degree in co-relation 32651. Up to 5726 conditions per place. [2024-11-20 17:48:18,871 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 265 selfloop transitions, 36 changer transitions 3/311 dead transitions. [2024-11-20 17:48:18,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 311 transitions, 3559 flow [2024-11-20 17:48:18,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:48:18,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:48:18,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-11-20 17:48:18,873 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2024-11-20 17:48:18,873 INFO L175 Difference]: Start difference. First operand has 273 places, 265 transitions, 2591 flow. Second operand 11 states and 269 transitions. [2024-11-20 17:48:18,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 311 transitions, 3559 flow [2024-11-20 17:48:19,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 311 transitions, 3429 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-11-20 17:48:19,062 INFO L231 Difference]: Finished difference. Result has 277 places, 267 transitions, 2559 flow [2024-11-20 17:48:19,062 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2559, PETRI_PLACES=277, PETRI_TRANSITIONS=267} [2024-11-20 17:48:19,063 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 216 predicate places. [2024-11-20 17:48:19,063 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 267 transitions, 2559 flow [2024-11-20 17:48:19,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:19,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:19,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:19,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-20 17:48:19,064 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:48:19,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:19,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1339613652, now seen corresponding path program 31 times [2024-11-20 17:48:19,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:19,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838654939] [2024-11-20 17:48:19,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:19,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:48:19,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:19,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838654939] [2024-11-20 17:48:19,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838654939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:19,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:19,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:48:19,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202831222] [2024-11-20 17:48:19,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:19,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:48:19,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:19,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:48:19,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:48:19,599 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:48:19,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 267 transitions, 2559 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:19,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:19,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:48:19,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:20,806 INFO L124 PetriNetUnfolderBase]: 3973/7203 cut-off events. [2024-11-20 17:48:20,806 INFO L125 PetriNetUnfolderBase]: For 150549/150818 co-relation queries the response was YES. [2024-11-20 17:48:20,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34717 conditions, 7203 events. 3973/7203 cut-off events. For 150549/150818 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 54752 event pairs, 1750 based on Foata normal form. 54/7014 useless extension candidates. Maximal degree in co-relation 34569. Up to 5839 conditions per place. [2024-11-20 17:48:20,876 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 281 selfloop transitions, 36 changer transitions 3/327 dead transitions. [2024-11-20 17:48:20,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 327 transitions, 4048 flow [2024-11-20 17:48:20,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:48:20,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:48:20,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-11-20 17:48:20,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-20 17:48:20,877 INFO L175 Difference]: Start difference. First operand has 277 places, 267 transitions, 2559 flow. Second operand 11 states and 279 transitions. [2024-11-20 17:48:20,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 327 transitions, 4048 flow [2024-11-20 17:48:21,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 327 transitions, 3978 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-20 17:48:21,120 INFO L231 Difference]: Finished difference. Result has 283 places, 276 transitions, 2970 flow [2024-11-20 17:48:21,120 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2489, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2970, PETRI_PLACES=283, PETRI_TRANSITIONS=276} [2024-11-20 17:48:21,120 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 222 predicate places. [2024-11-20 17:48:21,121 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 276 transitions, 2970 flow [2024-11-20 17:48:21,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:21,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:21,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:21,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-20 17:48:21,121 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:48:21,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:21,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2136447236, now seen corresponding path program 32 times [2024-11-20 17:48:21,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:21,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872144916] [2024-11-20 17:48:21,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:21,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:21,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:48:21,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:21,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872144916] [2024-11-20 17:48:21,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872144916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:21,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:21,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:48:21,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999392868] [2024-11-20 17:48:21,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:21,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:48:21,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:21,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:48:21,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:48:21,587 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:48:21,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 276 transitions, 2970 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:21,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:21,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:48:21,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:22,973 INFO L124 PetriNetUnfolderBase]: 4135/7486 cut-off events. [2024-11-20 17:48:22,973 INFO L125 PetriNetUnfolderBase]: For 208124/208605 co-relation queries the response was YES. [2024-11-20 17:48:23,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38574 conditions, 7486 events. 4135/7486 cut-off events. For 208124/208605 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 57370 event pairs, 1791 based on Foata normal form. 54/7286 useless extension candidates. Maximal degree in co-relation 38422. Up to 6025 conditions per place. [2024-11-20 17:48:23,054 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 293 selfloop transitions, 37 changer transitions 3/340 dead transitions. [2024-11-20 17:48:23,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 340 transitions, 4493 flow [2024-11-20 17:48:23,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:48:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:48:23,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2024-11-20 17:48:23,055 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-11-20 17:48:23,055 INFO L175 Difference]: Start difference. First operand has 283 places, 276 transitions, 2970 flow. Second operand 11 states and 284 transitions. [2024-11-20 17:48:23,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 340 transitions, 4493 flow [2024-11-20 17:48:23,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 340 transitions, 4157 flow, removed 151 selfloop flow, removed 5 redundant places. [2024-11-20 17:48:23,361 INFO L231 Difference]: Finished difference. Result has 292 places, 285 transitions, 3079 flow [2024-11-20 17:48:23,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3079, PETRI_PLACES=292, PETRI_TRANSITIONS=285} [2024-11-20 17:48:23,361 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 231 predicate places. [2024-11-20 17:48:23,362 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 285 transitions, 3079 flow [2024-11-20 17:48:23,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:23,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:23,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:23,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-20 17:48:23,362 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:48:23,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:23,362 INFO L85 PathProgramCache]: Analyzing trace with hash 575049204, now seen corresponding path program 33 times [2024-11-20 17:48:23,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:23,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066563424] [2024-11-20 17:48:23,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:23,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:48:23,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:23,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066563424] [2024-11-20 17:48:23,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066563424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:23,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:23,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:48:23,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947178795] [2024-11-20 17:48:23,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:23,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:48:23,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:23,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:48:23,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:48:23,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:48:23,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 285 transitions, 3079 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:23,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:23,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:48:23,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:25,557 INFO L124 PetriNetUnfolderBase]: 4196/7596 cut-off events. [2024-11-20 17:48:25,557 INFO L125 PetriNetUnfolderBase]: For 217937/218452 co-relation queries the response was YES. [2024-11-20 17:48:25,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38927 conditions, 7596 events. 4196/7596 cut-off events. For 217937/218452 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 58414 event pairs, 1881 based on Foata normal form. 68/7406 useless extension candidates. Maximal degree in co-relation 38770. Up to 6264 conditions per place. [2024-11-20 17:48:25,671 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 287 selfloop transitions, 36 changer transitions 4/334 dead transitions. [2024-11-20 17:48:25,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 334 transitions, 4221 flow [2024-11-20 17:48:25,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:48:25,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:48:25,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 271 transitions. [2024-11-20 17:48:25,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3973607038123167 [2024-11-20 17:48:25,673 INFO L175 Difference]: Start difference. First operand has 292 places, 285 transitions, 3079 flow. Second operand 11 states and 271 transitions. [2024-11-20 17:48:25,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 334 transitions, 4221 flow [2024-11-20 17:48:26,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 334 transitions, 3919 flow, removed 134 selfloop flow, removed 5 redundant places. [2024-11-20 17:48:26,089 INFO L231 Difference]: Finished difference. Result has 300 places, 291 transitions, 3034 flow [2024-11-20 17:48:26,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2777, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3034, PETRI_PLACES=300, PETRI_TRANSITIONS=291} [2024-11-20 17:48:26,090 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 239 predicate places. [2024-11-20 17:48:26,090 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 291 transitions, 3034 flow [2024-11-20 17:48:26,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:26,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:26,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:26,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-20 17:48:26,091 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:48:26,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:26,092 INFO L85 PathProgramCache]: Analyzing trace with hash 314059034, now seen corresponding path program 34 times [2024-11-20 17:48:26,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:26,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549652408] [2024-11-20 17:48:26,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:26,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:48:26,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:26,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549652408] [2024-11-20 17:48:26,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549652408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:26,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:26,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:48:26,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034361952] [2024-11-20 17:48:26,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:26,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:48:26,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:26,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:48:26,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:48:26,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:48:26,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 291 transitions, 3034 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:26,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:26,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:48:26,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:27,964 INFO L124 PetriNetUnfolderBase]: 4347/7840 cut-off events. [2024-11-20 17:48:27,964 INFO L125 PetriNetUnfolderBase]: For 219562/219853 co-relation queries the response was YES. [2024-11-20 17:48:28,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39866 conditions, 7840 events. 4347/7840 cut-off events. For 219562/219853 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 60461 event pairs, 1923 based on Foata normal form. 74/7655 useless extension candidates. Maximal degree in co-relation 39705. Up to 6288 conditions per place. [2024-11-20 17:48:28,061 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 298 selfloop transitions, 42 changer transitions 3/350 dead transitions. [2024-11-20 17:48:28,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 350 transitions, 4524 flow [2024-11-20 17:48:28,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:48:28,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:48:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-20 17:48:28,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-20 17:48:28,063 INFO L175 Difference]: Start difference. First operand has 300 places, 291 transitions, 3034 flow. Second operand 11 states and 282 transitions. [2024-11-20 17:48:28,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 350 transitions, 4524 flow [2024-11-20 17:48:28,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 350 transitions, 4306 flow, removed 89 selfloop flow, removed 6 redundant places. [2024-11-20 17:48:28,485 INFO L231 Difference]: Finished difference. Result has 307 places, 298 transitions, 3267 flow [2024-11-20 17:48:28,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3267, PETRI_PLACES=307, PETRI_TRANSITIONS=298} [2024-11-20 17:48:28,486 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 246 predicate places. [2024-11-20 17:48:28,486 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 298 transitions, 3267 flow [2024-11-20 17:48:28,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:28,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:28,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:28,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-20 17:48:28,487 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:48:28,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:28,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1089193844, now seen corresponding path program 35 times [2024-11-20 17:48:28,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:28,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735578221] [2024-11-20 17:48:28,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:28,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:48:28,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:28,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735578221] [2024-11-20 17:48:28,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735578221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:28,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:28,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:48:28,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239234447] [2024-11-20 17:48:28,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:28,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:48:28,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:28,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:48:28,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:48:28,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:48:28,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 298 transitions, 3267 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:28,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:28,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:48:28,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:30,332 INFO L124 PetriNetUnfolderBase]: 4410/7967 cut-off events. [2024-11-20 17:48:30,332 INFO L125 PetriNetUnfolderBase]: For 252973/253274 co-relation queries the response was YES. [2024-11-20 17:48:30,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41686 conditions, 7967 events. 4410/7967 cut-off events. For 252973/253274 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 61907 event pairs, 1995 based on Foata normal form. 63/7767 useless extension candidates. Maximal degree in co-relation 41521. Up to 6521 conditions per place. [2024-11-20 17:48:30,448 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 312 selfloop transitions, 35 changer transitions 3/357 dead transitions. [2024-11-20 17:48:30,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 357 transitions, 4700 flow [2024-11-20 17:48:30,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:48:30,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:48:30,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-11-20 17:48:30,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4120234604105572 [2024-11-20 17:48:30,449 INFO L175 Difference]: Start difference. First operand has 307 places, 298 transitions, 3267 flow. Second operand 11 states and 281 transitions. [2024-11-20 17:48:30,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 357 transitions, 4700 flow [2024-11-20 17:48:30,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 357 transitions, 4370 flow, removed 145 selfloop flow, removed 6 redundant places. [2024-11-20 17:48:30,927 INFO L231 Difference]: Finished difference. Result has 314 places, 303 transitions, 3251 flow [2024-11-20 17:48:30,927 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2941, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3251, PETRI_PLACES=314, PETRI_TRANSITIONS=303} [2024-11-20 17:48:30,927 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 253 predicate places. [2024-11-20 17:48:30,927 INFO L471 AbstractCegarLoop]: Abstraction has has 314 places, 303 transitions, 3251 flow [2024-11-20 17:48:30,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:30,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:30,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:30,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-20 17:48:30,928 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:48:30,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:30,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1039826156, now seen corresponding path program 36 times [2024-11-20 17:48:30,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:30,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152879024] [2024-11-20 17:48:30,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:30,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:31,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:48:31,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:31,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152879024] [2024-11-20 17:48:31,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152879024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:31,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:31,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:48:31,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029879823] [2024-11-20 17:48:31,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:31,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:48:31,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:31,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:48:31,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:48:31,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:48:31,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 303 transitions, 3251 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:31,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:31,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:48:31,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:32,640 INFO L124 PetriNetUnfolderBase]: 4410/7956 cut-off events. [2024-11-20 17:48:32,640 INFO L125 PetriNetUnfolderBase]: For 241742/242035 co-relation queries the response was YES. [2024-11-20 17:48:32,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40541 conditions, 7956 events. 4410/7956 cut-off events. For 241742/242035 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 61751 event pairs, 2019 based on Foata normal form. 69/7758 useless extension candidates. Maximal degree in co-relation 40372. Up to 6598 conditions per place. [2024-11-20 17:48:32,761 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 308 selfloop transitions, 34 changer transitions 3/352 dead transitions. [2024-11-20 17:48:32,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 352 transitions, 4434 flow [2024-11-20 17:48:32,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:48:32,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:48:32,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-11-20 17:48:32,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-11-20 17:48:32,762 INFO L175 Difference]: Start difference. First operand has 314 places, 303 transitions, 3251 flow. Second operand 11 states and 272 transitions. [2024-11-20 17:48:32,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 352 transitions, 4434 flow [2024-11-20 17:48:33,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 352 transitions, 4187 flow, removed 105 selfloop flow, removed 6 redundant places. [2024-11-20 17:48:33,209 INFO L231 Difference]: Finished difference. Result has 320 places, 306 transitions, 3157 flow [2024-11-20 17:48:33,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3004, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3157, PETRI_PLACES=320, PETRI_TRANSITIONS=306} [2024-11-20 17:48:33,210 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 259 predicate places. [2024-11-20 17:48:33,210 INFO L471 AbstractCegarLoop]: Abstraction has has 320 places, 306 transitions, 3157 flow [2024-11-20 17:48:33,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:33,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:33,210 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:33,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-11-20 17:48:33,210 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-20 17:48:33,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:33,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1453051924, now seen corresponding path program 37 times [2024-11-20 17:48:33,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:33,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698087941] [2024-11-20 17:48:33,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:33,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:33,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:48:33,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:33,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698087941] [2024-11-20 17:48:33,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698087941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:48:33,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:48:33,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:48:33,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847282046] [2024-11-20 17:48:33,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:48:33,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:48:33,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:33,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:48:33,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:48:33,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-20 17:48:33,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 306 transitions, 3157 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:48:33,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:33,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-20 17:48:33,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand