./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-complex/safestack_relacy.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-complex/safestack_relacy.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 516fee84c55ddb7fa4275a43ad5a2da6ea994abf63bbbbd8ed5c82108d65f7b0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:34:31,962 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:34:32,032 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:34:32,037 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:34:32,040 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:34:32,070 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:34:32,072 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:34:32,072 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:34:32,073 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:34:32,074 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:34:32,075 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:34:32,075 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:34:32,076 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:34:32,076 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:34:32,076 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:34:32,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:34:32,079 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:34:32,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:34:32,080 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:34:32,080 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:34:32,080 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:34:32,081 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:34:32,081 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:34:32,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:34:32,082 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:34:32,082 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:34:32,083 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:34:32,083 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:34:32,083 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:34:32,084 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:34:32,084 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:34:32,084 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:34:32,085 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:34:32,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:34:32,086 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:34:32,086 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:34:32,086 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:34:32,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:34:32,087 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:34:32,087 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:34:32,087 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:34:32,089 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:34:32,089 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516fee84c55ddb7fa4275a43ad5a2da6ea994abf63bbbbd8ed5c82108d65f7b0 [2024-11-22 21:34:32,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:34:32,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:34:32,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:34:32,383 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:34:32,383 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:34:32,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-complex/safestack_relacy.i [2024-11-22 21:34:33,831 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:34:34,114 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:34:34,115 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2024-11-22 21:34:34,142 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd24ba872/fa5aba253fee434d99ef21ce81f9b3a5/FLAG0f3a60aa7 [2024-11-22 21:34:34,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd24ba872/fa5aba253fee434d99ef21ce81f9b3a5 [2024-11-22 21:34:34,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:34:34,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:34:34,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:34:34,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:34:34,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:34:34,425 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:34:34" (1/1) ... [2024-11-22 21:34:34,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3ace6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:34, skipping insertion in model container [2024-11-22 21:34:34,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:34:34" (1/1) ... [2024-11-22 21:34:34,497 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:34:35,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:34:35,231 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:34:35,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:34:35,462 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:34:35,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:35 WrapperNode [2024-11-22 21:34:35,463 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:34:35,464 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:34:35,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:34:35,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:34:35,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:35" (1/1) ... [2024-11-22 21:34:35,505 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:35" (1/1) ... [2024-11-22 21:34:35,536 INFO L138 Inliner]: procedures = 458, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 177 [2024-11-22 21:34:35,537 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:34:35,537 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:34:35,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:34:35,538 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:34:35,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:35" (1/1) ... [2024-11-22 21:34:35,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:35" (1/1) ... [2024-11-22 21:34:35,552 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:35" (1/1) ... [2024-11-22 21:34:35,569 INFO L175 MemorySlicer]: Split 37 memory accesses to 3 slices as follows [2, 5, 30]. 81 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 3, 8]. The 13 writes are split as follows [0, 1, 12]. [2024-11-22 21:34:35,569 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:35" (1/1) ... [2024-11-22 21:34:35,570 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:35" (1/1) ... [2024-11-22 21:34:35,584 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:35" (1/1) ... [2024-11-22 21:34:35,588 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:35" (1/1) ... [2024-11-22 21:34:35,593 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:35" (1/1) ... [2024-11-22 21:34:35,595 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:35" (1/1) ... [2024-11-22 21:34:35,600 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:34:35,602 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:34:35,603 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:34:35,603 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:34:35,604 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:35" (1/1) ... [2024-11-22 21:34:35,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:34:35,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:34:35,654 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 21:34:35,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 21:34:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 21:34:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 21:34:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 21:34:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:34:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2024-11-22 21:34:35,706 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2024-11-22 21:34:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:34:35,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:34:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 21:34:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 21:34:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 21:34:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:34:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 21:34:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 21:34:35,710 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:34:36,031 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:34:36,034 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:34:36,490 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:34:36,490 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:34:36,717 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:34:36,717 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-22 21:34:36,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:34:36 BoogieIcfgContainer [2024-11-22 21:34:36,718 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:34:36,720 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:34:36,720 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:34:36,723 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:34:36,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:34:34" (1/3) ... [2024-11-22 21:34:36,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64be2e88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:34:36, skipping insertion in model container [2024-11-22 21:34:36,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:34:35" (2/3) ... [2024-11-22 21:34:36,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64be2e88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:34:36, skipping insertion in model container [2024-11-22 21:34:36,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:34:36" (3/3) ... [2024-11-22 21:34:36,725 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2024-11-22 21:34:36,739 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:34:36,739 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-11-22 21:34:36,739 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:34:36,829 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-22 21:34:36,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 117 transitions, 241 flow [2024-11-22 21:34:36,916 INFO L124 PetriNetUnfolderBase]: 13/129 cut-off events. [2024-11-22 21:34:36,917 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 21:34:36,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 129 events. 13/129 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 476 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 95. Up to 3 conditions per place. [2024-11-22 21:34:36,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 117 transitions, 241 flow [2024-11-22 21:34:36,927 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 117 transitions, 241 flow [2024-11-22 21:34:36,939 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:34:36,967 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;@74882a13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:34:36,969 INFO L334 AbstractCegarLoop]: Starting to check reachability of 88 error locations. [2024-11-22 21:34:36,975 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:34:36,976 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-22 21:34:36,976 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:34:36,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:36,977 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-22 21:34:36,978 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:34:36,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:36,987 INFO L85 PathProgramCache]: Analyzing trace with hash 18708, now seen corresponding path program 1 times [2024-11-22 21:34:37,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:37,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268057575] [2024-11-22 21:34:37,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:37,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:37,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:37,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:34:37,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268057575] [2024-11-22 21:34:37,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268057575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:34:37,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:34:37,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:34:37,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548346147] [2024-11-22 21:34:37,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:34:37,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:34:37,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:34:37,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:34:37,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:34:37,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-22 21:34:37,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 117 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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) [2024-11-22 21:34:37,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:34:37,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-22 21:34:37,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:34:37,845 INFO L124 PetriNetUnfolderBase]: 223/549 cut-off events. [2024-11-22 21:34:37,845 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2024-11-22 21:34:37,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 549 events. 223/549 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2381 event pairs, 185 based on Foata normal form. 24/410 useless extension candidates. Maximal degree in co-relation 954. Up to 455 conditions per place. [2024-11-22 21:34:37,856 INFO L140 encePairwiseOnDemand]: 83/117 looper letters, 60 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2024-11-22 21:34:37,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 83 transitions, 295 flow [2024-11-22 21:34:37,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:34:37,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:34:37,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-22 21:34:37,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46438746438746437 [2024-11-22 21:34:37,873 INFO L175 Difference]: Start difference. First operand has 107 places, 117 transitions, 241 flow. Second operand 3 states and 163 transitions. [2024-11-22 21:34:37,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 83 transitions, 295 flow [2024-11-22 21:34:37,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 295 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:34:37,882 INFO L231 Difference]: Finished difference. Result has 80 places, 83 transitions, 175 flow [2024-11-22 21:34:37,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=80, PETRI_TRANSITIONS=83} [2024-11-22 21:34:37,889 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -27 predicate places. [2024-11-22 21:34:37,891 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 83 transitions, 175 flow [2024-11-22 21:34:37,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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) [2024-11-22 21:34:37,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:37,892 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-22 21:34:37,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:34:37,892 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:34:37,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:37,894 INFO L85 PathProgramCache]: Analyzing trace with hash 18709, now seen corresponding path program 1 times [2024-11-22 21:34:37,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:37,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537910378] [2024-11-22 21:34:37,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:37,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:38,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:34:38,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537910378] [2024-11-22 21:34:38,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537910378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:34:38,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:34:38,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:34:38,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307222085] [2024-11-22 21:34:38,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:34:38,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:34:38,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:34:38,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:34:38,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:34:38,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 117 [2024-11-22 21:34:38,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2024-11-22 21:34:38,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:34:38,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 117 [2024-11-22 21:34:38,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:34:38,216 INFO L124 PetriNetUnfolderBase]: 188/470 cut-off events. [2024-11-22 21:34:38,217 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2024-11-22 21:34:38,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 470 events. 188/470 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1971 event pairs, 150 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 847. Up to 376 conditions per place. [2024-11-22 21:34:38,220 INFO L140 encePairwiseOnDemand]: 107/117 looper letters, 51 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2024-11-22 21:34:38,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 261 flow [2024-11-22 21:34:38,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:34:38,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:34:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-11-22 21:34:38,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38746438746438744 [2024-11-22 21:34:38,222 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 175 flow. Second operand 3 states and 136 transitions. [2024-11-22 21:34:38,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 261 flow [2024-11-22 21:34:38,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 74 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:34:38,225 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 158 flow [2024-11-22 21:34:38,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-11-22 21:34:38,226 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -35 predicate places. [2024-11-22 21:34:38,226 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 158 flow [2024-11-22 21:34:38,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2024-11-22 21:34:38,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:38,226 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 21:34:38,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:34:38,227 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:34:38,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:38,227 INFO L85 PathProgramCache]: Analyzing trace with hash 118810337, now seen corresponding path program 1 times [2024-11-22 21:34:38,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:38,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144777393] [2024-11-22 21:34:38,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:38,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:38,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:34:38,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144777393] [2024-11-22 21:34:38,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144777393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:34:38,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:34:38,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:34:38,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574348049] [2024-11-22 21:34:38,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:34:38,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:34:38,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:34:38,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:34:38,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:34:38,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 117 [2024-11-22 21:34:38,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:38,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:34:38,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 117 [2024-11-22 21:34:38,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:34:38,602 INFO L124 PetriNetUnfolderBase]: 189/477 cut-off events. [2024-11-22 21:34:38,602 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2024-11-22 21:34:38,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 477 events. 189/477 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2003 event pairs, 150 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 861. Up to 378 conditions per place. [2024-11-22 21:34:38,605 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 55 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2024-11-22 21:34:38,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 80 transitions, 288 flow [2024-11-22 21:34:38,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:34:38,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:34:38,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-22 21:34:38,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-22 21:34:38,608 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 158 flow. Second operand 4 states and 156 transitions. [2024-11-22 21:34:38,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 80 transitions, 288 flow [2024-11-22 21:34:38,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 287 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:34:38,613 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 178 flow [2024-11-22 21:34:38,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2024-11-22 21:34:38,614 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -32 predicate places. [2024-11-22 21:34:38,614 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 178 flow [2024-11-22 21:34:38,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:38,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:38,615 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 21:34:38,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:34:38,616 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:34:38,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:38,616 INFO L85 PathProgramCache]: Analyzing trace with hash 118810309, now seen corresponding path program 1 times [2024-11-22 21:34:38,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:38,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686647988] [2024-11-22 21:34:38,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:38,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:38,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:34:38,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686647988] [2024-11-22 21:34:38,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686647988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:34:38,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:34:38,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:34:38,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996204401] [2024-11-22 21:34:38,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:34:38,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:34:38,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:34:38,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:34:38,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:34:38,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 117 [2024-11-22 21:34:38,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:38,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:34:38,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 117 [2024-11-22 21:34:38,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:34:38,886 INFO L124 PetriNetUnfolderBase]: 188/473 cut-off events. [2024-11-22 21:34:38,886 INFO L125 PetriNetUnfolderBase]: For 8/10 co-relation queries the response was YES. [2024-11-22 21:34:38,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 473 events. 188/473 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1970 event pairs, 150 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 859. Up to 368 conditions per place. [2024-11-22 21:34:38,890 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 51 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-11-22 21:34:38,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 76 transitions, 285 flow [2024-11-22 21:34:38,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:34:38,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:34:38,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-11-22 21:34:38,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3247863247863248 [2024-11-22 21:34:38,893 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 178 flow. Second operand 4 states and 152 transitions. [2024-11-22 21:34:38,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 76 transitions, 285 flow [2024-11-22 21:34:38,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 279 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-22 21:34:38,896 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 179 flow [2024-11-22 21:34:38,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2024-11-22 21:34:38,899 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -30 predicate places. [2024-11-22 21:34:38,899 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 179 flow [2024-11-22 21:34:38,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:38,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:38,900 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:34:38,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:34:38,900 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:34:38,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:38,901 INFO L85 PathProgramCache]: Analyzing trace with hash 426277240, now seen corresponding path program 1 times [2024-11-22 21:34:38,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:38,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354570819] [2024-11-22 21:34:38,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:38,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:39,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:34:39,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354570819] [2024-11-22 21:34:39,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354570819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:34:39,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651032550] [2024-11-22 21:34:39,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:39,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:34:39,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:34:39,141 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) [2024-11-22 21:34:39,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:34:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:39,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 21:34:39,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:34:39,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:39,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:34:39,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-22 21:34:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:39,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651032550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:34:39,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:34:39,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-22 21:34:39,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037259656] [2024-11-22 21:34:39,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:34:39,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 21:34:39,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:34:39,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 21:34:39,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-22 21:34:39,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-22 21:34:39,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 179 flow. Second operand has 14 states, 14 states have (on average 24.928571428571427) internal successors, (349), 14 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:39,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:34:39,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-22 21:34:39,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:34:40,175 INFO L124 PetriNetUnfolderBase]: 189/477 cut-off events. [2024-11-22 21:34:40,175 INFO L125 PetriNetUnfolderBase]: For 10/12 co-relation queries the response was YES. [2024-11-22 21:34:40,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 477 events. 189/477 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1996 event pairs, 150 based on Foata normal form. 1/366 useless extension candidates. Maximal degree in co-relation 873. Up to 368 conditions per place. [2024-11-22 21:34:40,178 INFO L140 encePairwiseOnDemand]: 111/117 looper letters, 54 selfloop transitions, 7 changer transitions 0/81 dead transitions. [2024-11-22 21:34:40,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 315 flow [2024-11-22 21:34:40,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:34:40,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:34:40,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-11-22 21:34:40,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27228327228327226 [2024-11-22 21:34:40,182 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 179 flow. Second operand 7 states and 223 transitions. [2024-11-22 21:34:40,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 315 flow [2024-11-22 21:34:40,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 81 transitions, 305 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:34:40,186 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 190 flow [2024-11-22 21:34:40,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=190, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2024-11-22 21:34:40,187 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -27 predicate places. [2024-11-22 21:34:40,187 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 190 flow [2024-11-22 21:34:40,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.928571428571427) internal successors, (349), 14 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:40,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:40,190 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:34:40,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 21:34:40,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:34:40,391 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:34:40,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:40,392 INFO L85 PathProgramCache]: Analyzing trace with hash 426277212, now seen corresponding path program 1 times [2024-11-22 21:34:40,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:40,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899231078] [2024-11-22 21:34:40,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:40,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:40,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:40,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:34:40,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899231078] [2024-11-22 21:34:40,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899231078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:34:40,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454171762] [2024-11-22 21:34:40,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:40,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:34:40,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:34:40,497 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) [2024-11-22 21:34:40,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:34:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:40,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 21:34:40,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:34:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:40,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:34:40,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:40,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454171762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:34:40,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:34:40,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-22 21:34:40,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961806046] [2024-11-22 21:34:40,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:34:40,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 21:34:40,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:34:40,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 21:34:40,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-22 21:34:40,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-22 21:34:40,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 190 flow. Second operand has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:40,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:34:40,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-22 21:34:40,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:34:40,861 INFO L124 PetriNetUnfolderBase]: 188/475 cut-off events. [2024-11-22 21:34:40,862 INFO L125 PetriNetUnfolderBase]: For 16/18 co-relation queries the response was YES. [2024-11-22 21:34:40,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 475 events. 188/475 cut-off events. For 16/18 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1968 event pairs, 150 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 875. Up to 368 conditions per place. [2024-11-22 21:34:40,865 INFO L140 encePairwiseOnDemand]: 111/117 looper letters, 52 selfloop transitions, 7 changer transitions 0/79 dead transitions. [2024-11-22 21:34:40,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 79 transitions, 319 flow [2024-11-22 21:34:40,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:34:40,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:34:40,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-11-22 21:34:40,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28205128205128205 [2024-11-22 21:34:40,866 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 190 flow. Second operand 6 states and 198 transitions. [2024-11-22 21:34:40,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 79 transitions, 319 flow [2024-11-22 21:34:40,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 308 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-22 21:34:40,870 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 200 flow [2024-11-22 21:34:40,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2024-11-22 21:34:40,871 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -25 predicate places. [2024-11-22 21:34:40,871 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 200 flow [2024-11-22 21:34:40,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:40,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:40,871 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-22 21:34:40,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 21:34:41,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-22 21:34:41,075 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:34:41,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:41,076 INFO L85 PathProgramCache]: Analyzing trace with hash -992457883, now seen corresponding path program 2 times [2024-11-22 21:34:41,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:41,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090936147] [2024-11-22 21:34:41,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:34:41,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:41,104 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:34:41,104 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:34:41,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 21:34:41,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:34:41,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090936147] [2024-11-22 21:34:41,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090936147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:34:41,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:34:41,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:34:41,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982742602] [2024-11-22 21:34:41,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:34:41,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:34:41,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:34:41,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:34:41,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:34:41,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 117 [2024-11-22 21:34:41,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:41,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:34:41,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 117 [2024-11-22 21:34:41,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:34:41,350 INFO L124 PetriNetUnfolderBase]: 188/474 cut-off events. [2024-11-22 21:34:41,351 INFO L125 PetriNetUnfolderBase]: For 17/19 co-relation queries the response was YES. [2024-11-22 21:34:41,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 474 events. 188/474 cut-off events. For 17/19 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1966 event pairs, 150 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 873. Up to 368 conditions per place. [2024-11-22 21:34:41,353 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 50 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-22 21:34:41,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 302 flow [2024-11-22 21:34:41,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:34:41,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:34:41,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-22 21:34:41,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.358974358974359 [2024-11-22 21:34:41,355 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 200 flow. Second operand 3 states and 126 transitions. [2024-11-22 21:34:41,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 302 flow [2024-11-22 21:34:41,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 288 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:34:41,357 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 188 flow [2024-11-22 21:34:41,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2024-11-22 21:34:41,358 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -28 predicate places. [2024-11-22 21:34:41,358 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 188 flow [2024-11-22 21:34:41,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:41,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:41,359 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:34:41,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:34:41,359 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:34:41,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:41,359 INFO L85 PathProgramCache]: Analyzing trace with hash 242692767, now seen corresponding path program 1 times [2024-11-22 21:34:41,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:41,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646178586] [2024-11-22 21:34:41,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:41,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 21:34:41,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:34:41,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646178586] [2024-11-22 21:34:41,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646178586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:34:41,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:34:41,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:34:41,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795663325] [2024-11-22 21:34:41,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:34:41,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:34:41,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:34:41,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:34:41,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:34:41,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-22 21:34:41,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:41,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:34:41,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-22 21:34:41,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:34:41,598 INFO L124 PetriNetUnfolderBase]: 188/468 cut-off events. [2024-11-22 21:34:41,598 INFO L125 PetriNetUnfolderBase]: For 10/12 co-relation queries the response was YES. [2024-11-22 21:34:41,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 874 conditions, 468 events. 188/468 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1917 event pairs, 150 based on Foata normal form. 64/428 useless extension candidates. Maximal degree in co-relation 862. Up to 378 conditions per place. [2024-11-22 21:34:41,601 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 51 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2024-11-22 21:34:41,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 288 flow [2024-11-22 21:34:41,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:34:41,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:34:41,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-11-22 21:34:41,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34472934472934474 [2024-11-22 21:34:41,603 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 188 flow. Second operand 3 states and 121 transitions. [2024-11-22 21:34:41,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 288 flow [2024-11-22 21:34:41,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 73 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:34:41,605 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 182 flow [2024-11-22 21:34:41,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2024-11-22 21:34:41,606 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -30 predicate places. [2024-11-22 21:34:41,606 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 182 flow [2024-11-22 21:34:41,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:41,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:41,606 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:34:41,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:34:41,608 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:34:41,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:41,609 INFO L85 PathProgramCache]: Analyzing trace with hash 242692768, now seen corresponding path program 1 times [2024-11-22 21:34:41,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:41,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923147334] [2024-11-22 21:34:41,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:41,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:41,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 21:34:41,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:34:41,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923147334] [2024-11-22 21:34:41,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923147334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:34:41,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:34:41,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:34:41,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799273747] [2024-11-22 21:34:41,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:34:41,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:34:41,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:34:41,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:34:41,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:34:41,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-22 21:34:41,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:41,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:34:41,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-22 21:34:41,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:34:41,962 INFO L124 PetriNetUnfolderBase]: 151/421 cut-off events. [2024-11-22 21:34:41,962 INFO L125 PetriNetUnfolderBase]: For 10/13 co-relation queries the response was YES. [2024-11-22 21:34:41,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 421 events. 151/421 cut-off events. For 10/13 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1999 event pairs, 34 based on Foata normal form. 61/401 useless extension candidates. Maximal degree in co-relation 758. Up to 217 conditions per place. [2024-11-22 21:34:41,964 INFO L140 encePairwiseOnDemand]: 109/117 looper letters, 83 selfloop transitions, 5 changer transitions 1/108 dead transitions. [2024-11-22 21:34:41,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 108 transitions, 430 flow [2024-11-22 21:34:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:34:41,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:34:41,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-11-22 21:34:41,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.391025641025641 [2024-11-22 21:34:41,966 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 182 flow. Second operand 4 states and 183 transitions. [2024-11-22 21:34:41,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 108 transitions, 430 flow [2024-11-22 21:34:41,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 108 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:34:41,969 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 199 flow [2024-11-22 21:34:41,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2024-11-22 21:34:41,970 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -27 predicate places. [2024-11-22 21:34:41,970 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 199 flow [2024-11-22 21:34:41,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:41,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:41,970 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:34:41,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 21:34:41,971 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:34:41,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:41,971 INFO L85 PathProgramCache]: Analyzing trace with hash -979843097, now seen corresponding path program 1 times [2024-11-22 21:34:41,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:41,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094155145] [2024-11-22 21:34:41,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:41,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:42,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 21:34:42,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:34:42,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094155145] [2024-11-22 21:34:42,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094155145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:34:42,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289404662] [2024-11-22 21:34:42,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:42,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:34:42,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:34:42,157 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) [2024-11-22 21:34:42,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:34:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:42,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 21:34:42,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:34:42,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 21:34:42,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:34:42,515 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 21:34:42,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289404662] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:34:42,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:34:42,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-22 21:34:42,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741487475] [2024-11-22 21:34:42,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:34:42,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:34:42,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:34:42,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:34:42,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:34:42,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 117 [2024-11-22 21:34:42,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 199 flow. Second operand has 11 states, 11 states have (on average 24.818181818181817) internal successors, (273), 11 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:42,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:34:42,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 117 [2024-11-22 21:34:42,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:34:42,864 INFO L124 PetriNetUnfolderBase]: 116/313 cut-off events. [2024-11-22 21:34:42,864 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-11-22 21:34:42,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 313 events. 116/313 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1266 event pairs, 26 based on Foata normal form. 66/335 useless extension candidates. Maximal degree in co-relation 641. Up to 202 conditions per place. [2024-11-22 21:34:42,866 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 81 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-11-22 21:34:42,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 99 transitions, 406 flow [2024-11-22 21:34:42,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:34:42,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:34:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 189 transitions. [2024-11-22 21:34:42,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3230769230769231 [2024-11-22 21:34:42,868 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 199 flow. Second operand 5 states and 189 transitions. [2024-11-22 21:34:42,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 99 transitions, 406 flow [2024-11-22 21:34:42,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 99 transitions, 398 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:34:42,870 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 164 flow [2024-11-22 21:34:42,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2024-11-22 21:34:42,871 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -36 predicate places. [2024-11-22 21:34:42,871 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 164 flow [2024-11-22 21:34:42,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.818181818181817) internal successors, (273), 11 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:42,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:42,872 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:34:42,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 21:34:43,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:34:43,073 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:34:43,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:43,073 INFO L85 PathProgramCache]: Analyzing trace with hash -310364262, now seen corresponding path program 1 times [2024-11-22 21:34:43,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:43,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50927675] [2024-11-22 21:34:43,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:43,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:34:43,107 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 21:34:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:34:43,142 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 21:34:43,142 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 21:34:43,143 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (87 of 88 remaining) [2024-11-22 21:34:43,145 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 88 remaining) [2024-11-22 21:34:43,145 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 88 remaining) [2024-11-22 21:34:43,145 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 88 remaining) [2024-11-22 21:34:43,146 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 88 remaining) [2024-11-22 21:34:43,146 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 88 remaining) [2024-11-22 21:34:43,146 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 88 remaining) [2024-11-22 21:34:43,146 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 88 remaining) [2024-11-22 21:34:43,146 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 88 remaining) [2024-11-22 21:34:43,146 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 88 remaining) [2024-11-22 21:34:43,146 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 88 remaining) [2024-11-22 21:34:43,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 88 remaining) [2024-11-22 21:34:43,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 88 remaining) [2024-11-22 21:34:43,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (74 of 88 remaining) [2024-11-22 21:34:43,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 88 remaining) [2024-11-22 21:34:43,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 88 remaining) [2024-11-22 21:34:43,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 88 remaining) [2024-11-22 21:34:43,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 88 remaining) [2024-11-22 21:34:43,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 88 remaining) [2024-11-22 21:34:43,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 88 remaining) [2024-11-22 21:34:43,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 88 remaining) [2024-11-22 21:34:43,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 88 remaining) [2024-11-22 21:34:43,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (65 of 88 remaining) [2024-11-22 21:34:43,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 88 remaining) [2024-11-22 21:34:43,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 88 remaining) [2024-11-22 21:34:43,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 88 remaining) [2024-11-22 21:34:43,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 88 remaining) [2024-11-22 21:34:43,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 88 remaining) [2024-11-22 21:34:43,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 88 remaining) [2024-11-22 21:34:43,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 88 remaining) [2024-11-22 21:34:43,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 88 remaining) [2024-11-22 21:34:43,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 88 remaining) [2024-11-22 21:34:43,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 88 remaining) [2024-11-22 21:34:43,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 88 remaining) [2024-11-22 21:34:43,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 88 remaining) [2024-11-22 21:34:43,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 88 remaining) [2024-11-22 21:34:43,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 88 remaining) [2024-11-22 21:34:43,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 88 remaining) [2024-11-22 21:34:43,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 88 remaining) [2024-11-22 21:34:43,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 88 remaining) [2024-11-22 21:34:43,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 88 remaining) [2024-11-22 21:34:43,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 88 remaining) [2024-11-22 21:34:43,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 88 remaining) [2024-11-22 21:34:43,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 88 remaining) [2024-11-22 21:34:43,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 88 remaining) [2024-11-22 21:34:43,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 88 remaining) [2024-11-22 21:34:43,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 88 remaining) [2024-11-22 21:34:43,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 88 remaining) [2024-11-22 21:34:43,152 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 88 remaining) [2024-11-22 21:34:43,152 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 88 remaining) [2024-11-22 21:34:43,152 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 88 remaining) [2024-11-22 21:34:43,152 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 88 remaining) [2024-11-22 21:34:43,152 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 88 remaining) [2024-11-22 21:34:43,152 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 88 remaining) [2024-11-22 21:34:43,152 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 88 remaining) [2024-11-22 21:34:43,152 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 88 remaining) [2024-11-22 21:34:43,153 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 88 remaining) [2024-11-22 21:34:43,153 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 88 remaining) [2024-11-22 21:34:43,153 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 88 remaining) [2024-11-22 21:34:43,153 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (28 of 88 remaining) [2024-11-22 21:34:43,153 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 88 remaining) [2024-11-22 21:34:43,153 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 88 remaining) [2024-11-22 21:34:43,153 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 88 remaining) [2024-11-22 21:34:43,153 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 88 remaining) [2024-11-22 21:34:43,153 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 88 remaining) [2024-11-22 21:34:43,154 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 88 remaining) [2024-11-22 21:34:43,154 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 88 remaining) [2024-11-22 21:34:43,154 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 88 remaining) [2024-11-22 21:34:43,154 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 88 remaining) [2024-11-22 21:34:43,154 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 88 remaining) [2024-11-22 21:34:43,158 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 88 remaining) [2024-11-22 21:34:43,158 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 88 remaining) [2024-11-22 21:34:43,158 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 88 remaining) [2024-11-22 21:34:43,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 88 remaining) [2024-11-22 21:34:43,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 88 remaining) [2024-11-22 21:34:43,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 88 remaining) [2024-11-22 21:34:43,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 88 remaining) [2024-11-22 21:34:43,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 88 remaining) [2024-11-22 21:34:43,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 88 remaining) [2024-11-22 21:34:43,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 88 remaining) [2024-11-22 21:34:43,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 88 remaining) [2024-11-22 21:34:43,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 88 remaining) [2024-11-22 21:34:43,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 88 remaining) [2024-11-22 21:34:43,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 88 remaining) [2024-11-22 21:34:43,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 88 remaining) [2024-11-22 21:34:43,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 88 remaining) [2024-11-22 21:34:43,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 88 remaining) [2024-11-22 21:34:43,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 88 remaining) [2024-11-22 21:34:43,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 21:34:43,160 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:34:43,167 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 21:34:43,167 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-22 21:34:43,247 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 21:34:43,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 201 transitions, 418 flow [2024-11-22 21:34:43,271 INFO L124 PetriNetUnfolderBase]: 26/237 cut-off events. [2024-11-22 21:34:43,271 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-22 21:34:43,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 237 events. 26/237 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1180 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 187. Up to 6 conditions per place. [2024-11-22 21:34:43,273 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 201 transitions, 418 flow [2024-11-22 21:34:43,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 201 transitions, 418 flow [2024-11-22 21:34:43,279 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:34:43,279 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;@74882a13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:34:43,282 INFO L334 AbstractCegarLoop]: Starting to check reachability of 125 error locations. [2024-11-22 21:34:43,283 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:34:43,283 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-22 21:34:43,283 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:34:43,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:43,283 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-22 21:34:43,284 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-22 21:34:43,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:43,284 INFO L85 PathProgramCache]: Analyzing trace with hash 25140, now seen corresponding path program 1 times [2024-11-22 21:34:43,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:43,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035700537] [2024-11-22 21:34:43,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:43,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:43,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:34:43,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035700537] [2024-11-22 21:34:43,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035700537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:34:43,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:34:43,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:34:43,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739222432] [2024-11-22 21:34:43,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:34:43,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:34:43,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:34:43,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:34:43,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:34:43,360 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 201 [2024-11-22 21:34:43,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 201 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:43,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:34:43,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 201 [2024-11-22 21:34:43,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:34:46,200 INFO L124 PetriNetUnfolderBase]: 19095/30098 cut-off events. [2024-11-22 21:34:46,200 INFO L125 PetriNetUnfolderBase]: For 335/340 co-relation queries the response was YES. [2024-11-22 21:34:46,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58614 conditions, 30098 events. 19095/30098 cut-off events. For 335/340 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 204963 event pairs, 16870 based on Foata normal form. 1814/22601 useless extension candidates. Maximal degree in co-relation 55727. Up to 28317 conditions per place. [2024-11-22 21:34:46,412 INFO L140 encePairwiseOnDemand]: 138/201 looper letters, 103 selfloop transitions, 1 changer transitions 0/137 dead transitions. [2024-11-22 21:34:46,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 137 transitions, 498 flow [2024-11-22 21:34:46,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:34:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:34:46,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2024-11-22 21:34:46,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4494195688225539 [2024-11-22 21:34:46,414 INFO L175 Difference]: Start difference. First operand has 181 places, 201 transitions, 418 flow. Second operand 3 states and 271 transitions. [2024-11-22 21:34:46,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 137 transitions, 498 flow [2024-11-22 21:34:46,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 137 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:34:46,417 INFO L231 Difference]: Finished difference. Result has 129 places, 137 transitions, 292 flow [2024-11-22 21:34:46,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=129, PETRI_TRANSITIONS=137} [2024-11-22 21:34:46,418 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -52 predicate places. [2024-11-22 21:34:46,418 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 137 transitions, 292 flow [2024-11-22 21:34:46,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:46,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:46,419 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-22 21:34:46,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 21:34:46,419 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-22 21:34:46,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:46,419 INFO L85 PathProgramCache]: Analyzing trace with hash 25141, now seen corresponding path program 1 times [2024-11-22 21:34:46,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:46,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757117651] [2024-11-22 21:34:46,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:46,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:46,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:34:46,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757117651] [2024-11-22 21:34:46,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757117651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:34:46,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:34:46,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:34:46,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399731067] [2024-11-22 21:34:46,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:34:46,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:34:46,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:34:46,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:34:46,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:34:46,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 201 [2024-11-22 21:34:46,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 137 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:46,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:34:46,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 201 [2024-11-22 21:34:46,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:34:48,213 INFO L124 PetriNetUnfolderBase]: 13222/20991 cut-off events. [2024-11-22 21:34:48,213 INFO L125 PetriNetUnfolderBase]: For 274/279 co-relation queries the response was YES. [2024-11-22 21:34:48,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40552 conditions, 20991 events. 13222/20991 cut-off events. For 274/279 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 137190 event pairs, 11340 based on Foata normal form. 0/16305 useless extension candidates. Maximal degree in co-relation 40544. Up to 19395 conditions per place. [2024-11-22 21:34:48,358 INFO L140 encePairwiseOnDemand]: 184/201 looper letters, 87 selfloop transitions, 1 changer transitions 0/121 dead transitions. [2024-11-22 21:34:48,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 121 transitions, 436 flow [2024-11-22 21:34:48,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:34:48,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:34:48,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 221 transitions. [2024-11-22 21:34:48,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36650082918739635 [2024-11-22 21:34:48,360 INFO L175 Difference]: Start difference. First operand has 129 places, 137 transitions, 292 flow. Second operand 3 states and 221 transitions. [2024-11-22 21:34:48,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 121 transitions, 436 flow [2024-11-22 21:34:48,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 121 transitions, 435 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:34:48,363 INFO L231 Difference]: Finished difference. Result has 114 places, 121 transitions, 261 flow [2024-11-22 21:34:48,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=114, PETRI_TRANSITIONS=121} [2024-11-22 21:34:48,363 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -67 predicate places. [2024-11-22 21:34:48,363 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 121 transitions, 261 flow [2024-11-22 21:34:48,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:48,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:48,364 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 21:34:48,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 21:34:48,364 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-22 21:34:48,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:48,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1770117697, now seen corresponding path program 1 times [2024-11-22 21:34:48,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:48,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988888966] [2024-11-22 21:34:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:48,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:48,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:48,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:34:48,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988888966] [2024-11-22 21:34:48,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988888966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:34:48,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:34:48,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:34:48,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461585759] [2024-11-22 21:34:48,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:34:48,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:34:48,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:34:48,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:34:48,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:34:48,557 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 201 [2024-11-22 21:34:48,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 121 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:48,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:34:48,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 201 [2024-11-22 21:34:48,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:34:50,049 INFO L124 PetriNetUnfolderBase]: 13223/20998 cut-off events. [2024-11-22 21:34:50,049 INFO L125 PetriNetUnfolderBase]: For 274/279 co-relation queries the response was YES. [2024-11-22 21:34:50,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40567 conditions, 20998 events. 13223/20998 cut-off events. For 274/279 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 137255 event pairs, 11340 based on Foata normal form. 0/16311 useless extension candidates. Maximal degree in co-relation 40558. Up to 19397 conditions per place. [2024-11-22 21:34:50,167 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 91 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2024-11-22 21:34:50,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 127 transitions, 463 flow [2024-11-22 21:34:50,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:34:50,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:34:50,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2024-11-22 21:34:50,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30845771144278605 [2024-11-22 21:34:50,169 INFO L175 Difference]: Start difference. First operand has 114 places, 121 transitions, 261 flow. Second operand 4 states and 248 transitions. [2024-11-22 21:34:50,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 127 transitions, 463 flow [2024-11-22 21:34:50,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 127 transitions, 462 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:34:50,173 INFO L231 Difference]: Finished difference. Result has 117 places, 123 transitions, 281 flow [2024-11-22 21:34:50,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=117, PETRI_TRANSITIONS=123} [2024-11-22 21:34:50,174 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -64 predicate places. [2024-11-22 21:34:50,174 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 123 transitions, 281 flow [2024-11-22 21:34:50,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:50,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:50,175 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 21:34:50,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 21:34:50,175 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-22 21:34:50,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:50,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1770117669, now seen corresponding path program 1 times [2024-11-22 21:34:50,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:50,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501786631] [2024-11-22 21:34:50,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:50,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:50,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:34:50,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501786631] [2024-11-22 21:34:50,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501786631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:34:50,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:34:50,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:34:50,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532705720] [2024-11-22 21:34:50,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:34:50,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:34:50,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:34:50,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:34:50,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:34:50,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 201 [2024-11-22 21:34:50,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 123 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:50,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:34:50,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 201 [2024-11-22 21:34:50,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:34:52,085 INFO L124 PetriNetUnfolderBase]: 13222/20994 cut-off events. [2024-11-22 21:34:52,085 INFO L125 PetriNetUnfolderBase]: For 276/281 co-relation queries the response was YES. [2024-11-22 21:34:52,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40567 conditions, 20994 events. 13222/20994 cut-off events. For 276/281 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 137169 event pairs, 11340 based on Foata normal form. 1/16310 useless extension candidates. Maximal degree in co-relation 40556. Up to 19387 conditions per place. [2024-11-22 21:34:52,182 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 87 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2024-11-22 21:34:52,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 123 transitions, 460 flow [2024-11-22 21:34:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:34:52,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:34:52,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2024-11-22 21:34:52,184 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3034825870646766 [2024-11-22 21:34:52,184 INFO L175 Difference]: Start difference. First operand has 117 places, 123 transitions, 281 flow. Second operand 4 states and 244 transitions. [2024-11-22 21:34:52,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 123 transitions, 460 flow [2024-11-22 21:34:52,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 123 transitions, 454 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-22 21:34:52,186 INFO L231 Difference]: Finished difference. Result has 119 places, 122 transitions, 282 flow [2024-11-22 21:34:52,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=119, PETRI_TRANSITIONS=122} [2024-11-22 21:34:52,187 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -62 predicate places. [2024-11-22 21:34:52,187 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 122 transitions, 282 flow [2024-11-22 21:34:52,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:52,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:52,188 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:34:52,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 21:34:52,188 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-22 21:34:52,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:52,189 INFO L85 PathProgramCache]: Analyzing trace with hash -31369791, now seen corresponding path program 1 times [2024-11-22 21:34:52,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:52,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787466379] [2024-11-22 21:34:52,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:52,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:52,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:52,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:34:52,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787466379] [2024-11-22 21:34:52,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787466379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:34:52,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618286519] [2024-11-22 21:34:52,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:52,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:34:52,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:34:52,374 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:34:52,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 21:34:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:52,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 21:34:52,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:34:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:52,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:34:52,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-22 21:34:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:52,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618286519] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:34:52,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:34:52,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-22 21:34:52,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975784487] [2024-11-22 21:34:52,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:34:52,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 21:34:52,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:34:52,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 21:34:52,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-22 21:34:53,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 201 [2024-11-22 21:34:53,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 122 transitions, 282 flow. Second operand has 14 states, 14 states have (on average 38.92857142857143) internal successors, (545), 14 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:53,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:34:53,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 201 [2024-11-22 21:34:53,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:34:54,831 INFO L124 PetriNetUnfolderBase]: 13223/20998 cut-off events. [2024-11-22 21:34:54,831 INFO L125 PetriNetUnfolderBase]: For 278/283 co-relation queries the response was YES. [2024-11-22 21:34:54,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40582 conditions, 20998 events. 13223/20998 cut-off events. For 278/283 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 137237 event pairs, 11340 based on Foata normal form. 1/16313 useless extension candidates. Maximal degree in co-relation 40570. Up to 19387 conditions per place. [2024-11-22 21:34:55,087 INFO L140 encePairwiseOnDemand]: 195/201 looper letters, 90 selfloop transitions, 7 changer transitions 0/128 dead transitions. [2024-11-22 21:34:55,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 128 transitions, 490 flow [2024-11-22 21:34:55,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:34:55,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:34:55,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 357 transitions. [2024-11-22 21:34:55,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2537313432835821 [2024-11-22 21:34:55,090 INFO L175 Difference]: Start difference. First operand has 119 places, 122 transitions, 282 flow. Second operand 7 states and 357 transitions. [2024-11-22 21:34:55,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 128 transitions, 490 flow [2024-11-22 21:34:55,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 128 transitions, 480 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:34:55,093 INFO L231 Difference]: Finished difference. Result has 122 places, 123 transitions, 293 flow [2024-11-22 21:34:55,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=122, PETRI_TRANSITIONS=123} [2024-11-22 21:34:55,093 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -59 predicate places. [2024-11-22 21:34:55,094 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 123 transitions, 293 flow [2024-11-22 21:34:55,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 38.92857142857143) internal successors, (545), 14 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:55,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:55,094 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:34:55,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 21:34:55,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-22 21:34:55,299 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-22 21:34:55,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:55,299 INFO L85 PathProgramCache]: Analyzing trace with hash -31369819, now seen corresponding path program 1 times [2024-11-22 21:34:55,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:55,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532071314] [2024-11-22 21:34:55,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:55,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:55,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:55,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:34:55,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532071314] [2024-11-22 21:34:55,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532071314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:34:55,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622776098] [2024-11-22 21:34:55,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:55,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:34:55,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:34:55,390 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:34:55,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 21:34:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:55,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 21:34:55,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:34:55,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:55,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:34:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:34:55,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622776098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:34:55,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:34:55,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-22 21:34:55,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037565725] [2024-11-22 21:34:55,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:34:55,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 21:34:55,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:34:55,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 21:34:55,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-22 21:34:55,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 201 [2024-11-22 21:34:55,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 123 transitions, 293 flow. Second operand has 8 states, 8 states have (on average 39.25) internal successors, (314), 8 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:55,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:34:55,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 201 [2024-11-22 21:34:55,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:34:56,979 INFO L124 PetriNetUnfolderBase]: 13222/20996 cut-off events. [2024-11-22 21:34:56,979 INFO L125 PetriNetUnfolderBase]: For 284/289 co-relation queries the response was YES. [2024-11-22 21:34:57,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40585 conditions, 20996 events. 13222/20996 cut-off events. For 284/289 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 137154 event pairs, 11340 based on Foata normal form. 1/16312 useless extension candidates. Maximal degree in co-relation 40572. Up to 19387 conditions per place. [2024-11-22 21:34:57,090 INFO L140 encePairwiseOnDemand]: 195/201 looper letters, 88 selfloop transitions, 7 changer transitions 0/126 dead transitions. [2024-11-22 21:34:57,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 126 transitions, 494 flow [2024-11-22 21:34:57,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:34:57,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:34:57,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 318 transitions. [2024-11-22 21:34:57,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.263681592039801 [2024-11-22 21:34:57,092 INFO L175 Difference]: Start difference. First operand has 122 places, 123 transitions, 293 flow. Second operand 6 states and 318 transitions. [2024-11-22 21:34:57,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 126 transitions, 494 flow [2024-11-22 21:34:57,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 126 transitions, 483 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-22 21:34:57,095 INFO L231 Difference]: Finished difference. Result has 124 places, 123 transitions, 303 flow [2024-11-22 21:34:57,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=124, PETRI_TRANSITIONS=123} [2024-11-22 21:34:57,096 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -57 predicate places. [2024-11-22 21:34:57,096 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 123 transitions, 303 flow [2024-11-22 21:34:57,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 39.25) internal successors, (314), 8 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:57,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:57,096 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-22 21:34:57,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 21:34:57,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 21:34:57,297 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-22 21:34:57,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:57,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1766205989, now seen corresponding path program 2 times [2024-11-22 21:34:57,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:57,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097059264] [2024-11-22 21:34:57,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:34:57,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:57,321 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:34:57,321 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:34:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 21:34:57,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:34:57,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097059264] [2024-11-22 21:34:57,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097059264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:34:57,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:34:57,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:34:57,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272996392] [2024-11-22 21:34:57,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:34:57,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:34:57,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:34:57,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:34:57,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:34:57,582 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 201 [2024-11-22 21:34:57,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 123 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:57,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:34:57,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 201 [2024-11-22 21:34:57,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:34:59,101 INFO L124 PetriNetUnfolderBase]: 13222/20995 cut-off events. [2024-11-22 21:34:59,101 INFO L125 PetriNetUnfolderBase]: For 285/290 co-relation queries the response was YES. [2024-11-22 21:34:59,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40583 conditions, 20995 events. 13222/20995 cut-off events. For 285/290 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 137155 event pairs, 11340 based on Foata normal form. 0/16311 useless extension candidates. Maximal degree in co-relation 40570. Up to 19387 conditions per place. [2024-11-22 21:34:59,195 INFO L140 encePairwiseOnDemand]: 198/201 looper letters, 86 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2024-11-22 21:34:59,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 122 transitions, 477 flow [2024-11-22 21:34:59,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:34:59,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:34:59,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 204 transitions. [2024-11-22 21:34:59,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3383084577114428 [2024-11-22 21:34:59,196 INFO L175 Difference]: Start difference. First operand has 124 places, 123 transitions, 303 flow. Second operand 3 states and 204 transitions. [2024-11-22 21:34:59,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 122 transitions, 477 flow [2024-11-22 21:34:59,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 122 transitions, 463 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:34:59,198 INFO L231 Difference]: Finished difference. Result has 121 places, 122 transitions, 291 flow [2024-11-22 21:34:59,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=291, PETRI_PLACES=121, PETRI_TRANSITIONS=122} [2024-11-22 21:34:59,199 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -60 predicate places. [2024-11-22 21:34:59,199 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 122 transitions, 291 flow [2024-11-22 21:34:59,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:59,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:34:59,199 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:34:59,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 21:34:59,199 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-22 21:34:59,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:34:59,200 INFO L85 PathProgramCache]: Analyzing trace with hash -600905848, now seen corresponding path program 1 times [2024-11-22 21:34:59,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:34:59,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029066186] [2024-11-22 21:34:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:34:59,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:34:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:34:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 21:34:59,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:34:59,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029066186] [2024-11-22 21:34:59,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029066186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:34:59,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:34:59,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:34:59,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291452609] [2024-11-22 21:34:59,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:34:59,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:34:59,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:34:59,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:34:59,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:34:59,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 201 [2024-11-22 21:34:59,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 122 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:34:59,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:34:59,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 201 [2024-11-22 21:34:59,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:00,938 INFO L124 PetriNetUnfolderBase]: 13222/20979 cut-off events. [2024-11-22 21:35:00,939 INFO L125 PetriNetUnfolderBase]: For 278/283 co-relation queries the response was YES. [2024-11-22 21:35:00,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40562 conditions, 20979 events. 13222/20979 cut-off events. For 278/283 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 136930 event pairs, 11340 based on Foata normal form. 2175/18486 useless extension candidates. Maximal degree in co-relation 40549. Up to 19397 conditions per place. [2024-11-22 21:35:01,065 INFO L140 encePairwiseOnDemand]: 198/201 looper letters, 87 selfloop transitions, 1 changer transitions 0/120 dead transitions. [2024-11-22 21:35:01,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 120 transitions, 463 flow [2024-11-22 21:35:01,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:35:01,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:35:01,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2024-11-22 21:35:01,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33001658374792703 [2024-11-22 21:35:01,067 INFO L175 Difference]: Start difference. First operand has 121 places, 122 transitions, 291 flow. Second operand 3 states and 199 transitions. [2024-11-22 21:35:01,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 120 transitions, 463 flow [2024-11-22 21:35:01,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 120 transitions, 459 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:35:01,070 INFO L231 Difference]: Finished difference. Result has 119 places, 120 transitions, 285 flow [2024-11-22 21:35:01,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=119, PETRI_TRANSITIONS=120} [2024-11-22 21:35:01,070 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -62 predicate places. [2024-11-22 21:35:01,070 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 120 transitions, 285 flow [2024-11-22 21:35:01,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:35:01,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:01,071 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:35:01,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 21:35:01,071 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-22 21:35:01,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:01,071 INFO L85 PathProgramCache]: Analyzing trace with hash -600905847, now seen corresponding path program 1 times [2024-11-22 21:35:01,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:01,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861680225] [2024-11-22 21:35:01,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:01,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 21:35:01,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:01,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861680225] [2024-11-22 21:35:01,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861680225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:35:01,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:35:01,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:35:01,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137645552] [2024-11-22 21:35:01,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:35:01,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:35:01,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:01,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:35:01,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:35:01,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 201 [2024-11-22 21:35:01,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 120 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:35:01,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:01,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 201 [2024-11-22 21:35:01,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:02,652 INFO L124 PetriNetUnfolderBase]: 11052/18318 cut-off events. [2024-11-22 21:35:02,652 INFO L125 PetriNetUnfolderBase]: For 444/546 co-relation queries the response was YES. [2024-11-22 21:35:02,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34868 conditions, 18318 events. 11052/18318 cut-off events. For 444/546 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 127933 event pairs, 5552 based on Foata normal form. 2053/16191 useless extension candidates. Maximal degree in co-relation 34855. Up to 12865 conditions per place. [2024-11-22 21:35:02,749 INFO L140 encePairwiseOnDemand]: 193/201 looper letters, 158 selfloop transitions, 5 changer transitions 0/193 dead transitions. [2024-11-22 21:35:02,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 193 transitions, 763 flow [2024-11-22 21:35:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:35:02,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:35:02,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2024-11-22 21:35:02,751 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38930348258706465 [2024-11-22 21:35:02,751 INFO L175 Difference]: Start difference. First operand has 119 places, 120 transitions, 285 flow. Second operand 4 states and 313 transitions. [2024-11-22 21:35:02,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 193 transitions, 763 flow [2024-11-22 21:35:02,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 193 transitions, 762 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:35:02,755 INFO L231 Difference]: Finished difference. Result has 122 places, 122 transitions, 312 flow [2024-11-22 21:35:02,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=122, PETRI_TRANSITIONS=122} [2024-11-22 21:35:02,755 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -59 predicate places. [2024-11-22 21:35:02,756 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 122 transitions, 312 flow [2024-11-22 21:35:02,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:35:02,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:02,756 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:35:02,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 21:35:02,756 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-22 21:35:02,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:02,757 INFO L85 PathProgramCache]: Analyzing trace with hash -710045442, now seen corresponding path program 1 times [2024-11-22 21:35:02,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:02,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934469709] [2024-11-22 21:35:02,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:02,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 21:35:02,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:02,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934469709] [2024-11-22 21:35:02,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934469709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:35:02,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877319684] [2024-11-22 21:35:02,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:02,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:35:02,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:35:02,946 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:35:02,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 21:35:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:03,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 21:35:03,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:35:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 21:35:03,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:35:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 21:35:03,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877319684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:35:03,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:35:03,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-22 21:35:03,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268057902] [2024-11-22 21:35:03,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:35:03,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:35:03,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:03,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:35:03,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:35:03,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 201 [2024-11-22 21:35:03,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 122 transitions, 312 flow. Second operand has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:35:03,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:03,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 201 [2024-11-22 21:35:03,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:04,459 INFO L124 PetriNetUnfolderBase]: 8372/14128 cut-off events. [2024-11-22 21:35:04,459 INFO L125 PetriNetUnfolderBase]: For 2352/2352 co-relation queries the response was YES. [2024-11-22 21:35:04,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27976 conditions, 14128 events. 8372/14128 cut-off events. For 2352/2352 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 102867 event pairs, 190 based on Foata normal form. 2244/14078 useless extension candidates. Maximal degree in co-relation 27961. Up to 10135 conditions per place. [2024-11-22 21:35:04,515 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 186 selfloop transitions, 4 changer transitions 0/216 dead transitions. [2024-11-22 21:35:04,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 216 transitions, 860 flow [2024-11-22 21:35:04,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:35:04,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:35:04,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 402 transitions. [2024-11-22 21:35:04,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-22 21:35:04,517 INFO L175 Difference]: Start difference. First operand has 122 places, 122 transitions, 312 flow. Second operand 6 states and 402 transitions. [2024-11-22 21:35:04,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 216 transitions, 860 flow [2024-11-22 21:35:04,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 216 transitions, 856 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:35:04,522 INFO L231 Difference]: Finished difference. Result has 116 places, 110 transitions, 272 flow [2024-11-22 21:35:04,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=116, PETRI_TRANSITIONS=110} [2024-11-22 21:35:04,523 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -65 predicate places. [2024-11-22 21:35:04,523 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 110 transitions, 272 flow [2024-11-22 21:35:04,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:35:04,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:04,523 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:35:04,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 21:35:04,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:35:04,724 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-22 21:35:04,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:04,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1341956522, now seen corresponding path program 1 times [2024-11-22 21:35:04,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:04,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335269143] [2024-11-22 21:35:04,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:04,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:35:04,747 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 21:35:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:35:04,766 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 21:35:04,767 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 21:35:04,767 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (124 of 125 remaining) [2024-11-22 21:35:04,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (123 of 125 remaining) [2024-11-22 21:35:04,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (122 of 125 remaining) [2024-11-22 21:35:04,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (121 of 125 remaining) [2024-11-22 21:35:04,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (120 of 125 remaining) [2024-11-22 21:35:04,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (119 of 125 remaining) [2024-11-22 21:35:04,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (118 of 125 remaining) [2024-11-22 21:35:04,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 125 remaining) [2024-11-22 21:35:04,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 125 remaining) [2024-11-22 21:35:04,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 125 remaining) [2024-11-22 21:35:04,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 125 remaining) [2024-11-22 21:35:04,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 125 remaining) [2024-11-22 21:35:04,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 125 remaining) [2024-11-22 21:35:04,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (111 of 125 remaining) [2024-11-22 21:35:04,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 125 remaining) [2024-11-22 21:35:04,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 125 remaining) [2024-11-22 21:35:04,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 125 remaining) [2024-11-22 21:35:04,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 125 remaining) [2024-11-22 21:35:04,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 125 remaining) [2024-11-22 21:35:04,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 125 remaining) [2024-11-22 21:35:04,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 125 remaining) [2024-11-22 21:35:04,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 125 remaining) [2024-11-22 21:35:04,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (102 of 125 remaining) [2024-11-22 21:35:04,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 125 remaining) [2024-11-22 21:35:04,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 125 remaining) [2024-11-22 21:35:04,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 125 remaining) [2024-11-22 21:35:04,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 125 remaining) [2024-11-22 21:35:04,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 125 remaining) [2024-11-22 21:35:04,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 125 remaining) [2024-11-22 21:35:04,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 125 remaining) [2024-11-22 21:35:04,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 125 remaining) [2024-11-22 21:35:04,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 125 remaining) [2024-11-22 21:35:04,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 125 remaining) [2024-11-22 21:35:04,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 125 remaining) [2024-11-22 21:35:04,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 125 remaining) [2024-11-22 21:35:04,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 125 remaining) [2024-11-22 21:35:04,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 125 remaining) [2024-11-22 21:35:04,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 125 remaining) [2024-11-22 21:35:04,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 125 remaining) [2024-11-22 21:35:04,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 125 remaining) [2024-11-22 21:35:04,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 125 remaining) [2024-11-22 21:35:04,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 125 remaining) [2024-11-22 21:35:04,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 125 remaining) [2024-11-22 21:35:04,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 125 remaining) [2024-11-22 21:35:04,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 125 remaining) [2024-11-22 21:35:04,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 125 remaining) [2024-11-22 21:35:04,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 125 remaining) [2024-11-22 21:35:04,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 125 remaining) [2024-11-22 21:35:04,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 125 remaining) [2024-11-22 21:35:04,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 125 remaining) [2024-11-22 21:35:04,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 125 remaining) [2024-11-22 21:35:04,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 125 remaining) [2024-11-22 21:35:04,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 125 remaining) [2024-11-22 21:35:04,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 125 remaining) [2024-11-22 21:35:04,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 125 remaining) [2024-11-22 21:35:04,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 125 remaining) [2024-11-22 21:35:04,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 125 remaining) [2024-11-22 21:35:04,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 125 remaining) [2024-11-22 21:35:04,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 125 remaining) [2024-11-22 21:35:04,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (65 of 125 remaining) [2024-11-22 21:35:04,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 125 remaining) [2024-11-22 21:35:04,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 125 remaining) [2024-11-22 21:35:04,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 125 remaining) [2024-11-22 21:35:04,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 125 remaining) [2024-11-22 21:35:04,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 125 remaining) [2024-11-22 21:35:04,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 125 remaining) [2024-11-22 21:35:04,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 125 remaining) [2024-11-22 21:35:04,773 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 125 remaining) [2024-11-22 21:35:04,774 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 125 remaining) [2024-11-22 21:35:04,774 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 125 remaining) [2024-11-22 21:35:04,774 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 125 remaining) [2024-11-22 21:35:04,774 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 125 remaining) [2024-11-22 21:35:04,774 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 125 remaining) [2024-11-22 21:35:04,774 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 125 remaining) [2024-11-22 21:35:04,775 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 125 remaining) [2024-11-22 21:35:04,775 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 125 remaining) [2024-11-22 21:35:04,775 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 125 remaining) [2024-11-22 21:35:04,775 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 125 remaining) [2024-11-22 21:35:04,775 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 125 remaining) [2024-11-22 21:35:04,775 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 125 remaining) [2024-11-22 21:35:04,775 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 125 remaining) [2024-11-22 21:35:04,776 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 125 remaining) [2024-11-22 21:35:04,776 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 125 remaining) [2024-11-22 21:35:04,776 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 125 remaining) [2024-11-22 21:35:04,776 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 125 remaining) [2024-11-22 21:35:04,776 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 125 remaining) [2024-11-22 21:35:04,776 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 125 remaining) [2024-11-22 21:35:04,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 125 remaining) [2024-11-22 21:35:04,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 125 remaining) [2024-11-22 21:35:04,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 125 remaining) [2024-11-22 21:35:04,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 125 remaining) [2024-11-22 21:35:04,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 125 remaining) [2024-11-22 21:35:04,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 125 remaining) [2024-11-22 21:35:04,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 125 remaining) [2024-11-22 21:35:04,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 125 remaining) [2024-11-22 21:35:04,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 125 remaining) [2024-11-22 21:35:04,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (28 of 125 remaining) [2024-11-22 21:35:04,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 125 remaining) [2024-11-22 21:35:04,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 125 remaining) [2024-11-22 21:35:04,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 125 remaining) [2024-11-22 21:35:04,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 125 remaining) [2024-11-22 21:35:04,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 125 remaining) [2024-11-22 21:35:04,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 125 remaining) [2024-11-22 21:35:04,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 125 remaining) [2024-11-22 21:35:04,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 125 remaining) [2024-11-22 21:35:04,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 125 remaining) [2024-11-22 21:35:04,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 125 remaining) [2024-11-22 21:35:04,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 125 remaining) [2024-11-22 21:35:04,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 125 remaining) [2024-11-22 21:35:04,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 125 remaining) [2024-11-22 21:35:04,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 125 remaining) [2024-11-22 21:35:04,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 125 remaining) [2024-11-22 21:35:04,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 125 remaining) [2024-11-22 21:35:04,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 125 remaining) [2024-11-22 21:35:04,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 125 remaining) [2024-11-22 21:35:04,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 125 remaining) [2024-11-22 21:35:04,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 125 remaining) [2024-11-22 21:35:04,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 125 remaining) [2024-11-22 21:35:04,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 125 remaining) [2024-11-22 21:35:04,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 125 remaining) [2024-11-22 21:35:04,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 125 remaining) [2024-11-22 21:35:04,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 125 remaining) [2024-11-22 21:35:04,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 125 remaining) [2024-11-22 21:35:04,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 125 remaining) [2024-11-22 21:35:04,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 125 remaining) [2024-11-22 21:35:04,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 21:35:04,781 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:35:04,782 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 21:35:04,782 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-22 21:35:04,840 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 21:35:04,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 285 transitions, 597 flow [2024-11-22 21:35:04,884 INFO L124 PetriNetUnfolderBase]: 42/366 cut-off events. [2024-11-22 21:35:04,884 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-22 21:35:04,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 366 events. 42/366 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2135 event pairs, 1 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 291. Up to 12 conditions per place. [2024-11-22 21:35:04,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 285 transitions, 597 flow [2024-11-22 21:35:04,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 285 transitions, 597 flow [2024-11-22 21:35:04,902 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:35:04,902 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;@74882a13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:35:04,902 INFO L334 AbstractCegarLoop]: Starting to check reachability of 162 error locations. [2024-11-22 21:35:04,903 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:35:04,903 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-22 21:35:04,903 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:35:04,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:04,904 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-22 21:35:04,904 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2024-11-22 21:35:04,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:04,904 INFO L85 PathProgramCache]: Analyzing trace with hash 34260, now seen corresponding path program 1 times [2024-11-22 21:35:04,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:04,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582330306] [2024-11-22 21:35:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:04,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:04,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:35:04,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:04,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582330306] [2024-11-22 21:35:04,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582330306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:35:04,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:35:04,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:35:04,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100097910] [2024-11-22 21:35:04,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:35:04,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:35:04,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:04,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:35:04,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:35:04,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 285 [2024-11-22 21:35:04,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 285 transitions, 597 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:35:04,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:04,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 285 [2024-11-22 21:35:04,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand