./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 c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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-?-c7c6ca5-m [2024-11-09 10:38:12,663 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:38:12,742 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:38:12,748 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:38:12,749 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:38:12,780 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:38:12,781 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:38:12,781 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:38:12,782 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:38:12,783 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:38:12,784 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:38:12,784 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:38:12,785 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:38:12,785 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:38:12,787 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:38:12,788 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:38:12,788 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:38:12,788 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:38:12,789 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:38:12,789 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:38:12,789 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:38:12,790 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:38:12,792 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:38:12,793 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:38:12,793 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:38:12,794 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:38:12,794 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:38:12,794 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:38:12,794 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:38:12,795 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:38:12,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:38:12,795 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:38:12,795 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:38:12,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:38:12,796 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:38:12,796 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:38:12,796 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:38:12,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:38:12,797 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:38:12,797 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:38:12,797 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:38:12,799 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:38:12,799 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516fee84c55ddb7fa4275a43ad5a2da6ea994abf63bbbbd8ed5c82108d65f7b0 [2024-11-09 10:38:13,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:38:13,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:38:13,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:38:13,090 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:38:13,090 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:38:13,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-complex/safestack_relacy.i [2024-11-09 10:38:14,602 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:38:14,901 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:38:14,902 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2024-11-09 10:38:14,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8b88109e/a1abe5db367f40f78f0245c5fc839de7/FLAG1edaa1d12 [2024-11-09 10:38:14,945 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8b88109e/a1abe5db367f40f78f0245c5fc839de7 [2024-11-09 10:38:14,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:38:14,949 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:38:14,950 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:38:14,950 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:38:14,956 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:38:14,957 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:38:14" (1/1) ... [2024-11-09 10:38:14,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e585b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:14, skipping insertion in model container [2024-11-09 10:38:14,960 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:38:14" (1/1) ... [2024-11-09 10:38:15,018 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:38:15,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:38:15,681 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:38:15,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:38:15,898 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:38:15,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:15 WrapperNode [2024-11-09 10:38:15,899 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:38:15,900 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:38:15,900 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:38:15,901 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:38:15,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:15" (1/1) ... [2024-11-09 10:38:15,948 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:15" (1/1) ... [2024-11-09 10:38:15,993 INFO L138 Inliner]: procedures = 458, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 177 [2024-11-09 10:38:15,997 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:38:15,998 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:38:15,999 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:38:15,999 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:38:16,011 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:15" (1/1) ... [2024-11-09 10:38:16,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:15" (1/1) ... [2024-11-09 10:38:16,017 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:15" (1/1) ... [2024-11-09 10:38:16,038 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]. [2024-11-09 10:38:16,039 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:15" (1/1) ... [2024-11-09 10:38:16,039 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:15" (1/1) ... [2024-11-09 10:38:16,052 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:15" (1/1) ... [2024-11-09 10:38:16,056 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:15" (1/1) ... [2024-11-09 10:38:16,060 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:15" (1/1) ... [2024-11-09 10:38:16,063 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:15" (1/1) ... [2024-11-09 10:38:16,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:38:16,074 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:38:16,074 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:38:16,074 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:38:16,075 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:15" (1/1) ... [2024-11-09 10:38:16,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:38:16,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:38:16,128 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) [2024-11-09 10:38:16,131 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 [2024-11-09 10:38:16,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 10:38:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 10:38:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 10:38:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:38:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2024-11-09 10:38:16,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2024-11-09 10:38:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:38:16,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:38:16,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 10:38:16,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 10:38:16,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 10:38:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:38:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:38:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 10:38:16,186 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:38:16,505 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:38:16,506 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:38:16,919 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:38:16,920 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:38:17,142 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:38:17,143 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-09 10:38:17,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:38:17 BoogieIcfgContainer [2024-11-09 10:38:17,144 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:38:17,145 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:38:17,146 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:38:17,150 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:38:17,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:38:14" (1/3) ... [2024-11-09 10:38:17,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490554b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:38:17, skipping insertion in model container [2024-11-09 10:38:17,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:15" (2/3) ... [2024-11-09 10:38:17,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490554b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:38:17, skipping insertion in model container [2024-11-09 10:38:17,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:38:17" (3/3) ... [2024-11-09 10:38:17,154 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2024-11-09 10:38:17,172 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:38:17,173 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-11-09 10:38:17,173 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:38:17,289 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-09 10:38:17,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 117 transitions, 241 flow [2024-11-09 10:38:17,380 INFO L124 PetriNetUnfolderBase]: 13/129 cut-off events. [2024-11-09 10:38:17,383 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 10:38:17,388 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. [2024-11-09 10:38:17,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 117 transitions, 241 flow [2024-11-09 10:38:17,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 117 transitions, 241 flow [2024-11-09 10:38:17,408 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:38:17,417 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;@170b8962, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:38:17,418 INFO L334 AbstractCegarLoop]: Starting to check reachability of 88 error locations. [2024-11-09 10:38:17,421 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:38:17,421 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-09 10:38:17,421 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:38:17,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:17,422 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-09 10:38:17,423 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)] === [2024-11-09 10:38:17,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:17,428 INFO L85 PathProgramCache]: Analyzing trace with hash 18708, now seen corresponding path program 1 times [2024-11-09 10:38:17,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:17,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616895826] [2024-11-09 10:38:17,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:17,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:17,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:17,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:17,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616895826] [2024-11-09 10:38:17,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616895826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:38:17,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:38:17,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:38:17,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395465498] [2024-11-09 10:38:17,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:38:17,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:38:17,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:17,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:38:17,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:38:17,915 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-09 10:38:17,918 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) [2024-11-09 10:38:17,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:17,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-09 10:38:17,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:18,189 INFO L124 PetriNetUnfolderBase]: 223/549 cut-off events. [2024-11-09 10:38:18,190 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2024-11-09 10:38:18,192 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. [2024-11-09 10:38:18,200 INFO L140 encePairwiseOnDemand]: 83/117 looper letters, 60 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2024-11-09 10:38:18,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 83 transitions, 295 flow [2024-11-09 10:38:18,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:38:18,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:38:18,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-09 10:38:18,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46438746438746437 [2024-11-09 10:38:18,223 INFO L175 Difference]: Start difference. First operand has 107 places, 117 transitions, 241 flow. Second operand 3 states and 163 transitions. [2024-11-09 10:38:18,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 83 transitions, 295 flow [2024-11-09 10:38:18,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 295 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:38:18,231 INFO L231 Difference]: Finished difference. Result has 80 places, 83 transitions, 175 flow [2024-11-09 10:38:18,234 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} [2024-11-09 10:38:18,240 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -27 predicate places. [2024-11-09 10:38:18,241 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 83 transitions, 175 flow [2024-11-09 10:38:18,241 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) [2024-11-09 10:38:18,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:18,241 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-09 10:38:18,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:38:18,242 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)] === [2024-11-09 10:38:18,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:18,244 INFO L85 PathProgramCache]: Analyzing trace with hash 18709, now seen corresponding path program 1 times [2024-11-09 10:38:18,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:18,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030102131] [2024-11-09 10:38:18,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:18,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:18,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:18,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030102131] [2024-11-09 10:38:18,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030102131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:38:18,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:38:18,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:38:18,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161381299] [2024-11-09 10:38:18,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:38:18,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:38:18,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:18,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:38:18,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:38:18,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 117 [2024-11-09 10:38:18,445 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) [2024-11-09 10:38:18,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:18,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 117 [2024-11-09 10:38:18,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:18,582 INFO L124 PetriNetUnfolderBase]: 188/470 cut-off events. [2024-11-09 10:38:18,583 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2024-11-09 10:38:18,584 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. [2024-11-09 10:38:18,588 INFO L140 encePairwiseOnDemand]: 107/117 looper letters, 51 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2024-11-09 10:38:18,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 261 flow [2024-11-09 10:38:18,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:38:18,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:38:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-11-09 10:38:18,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38746438746438744 [2024-11-09 10:38:18,591 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 175 flow. Second operand 3 states and 136 transitions. [2024-11-09 10:38:18,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 261 flow [2024-11-09 10:38:18,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 74 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:38:18,593 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 158 flow [2024-11-09 10:38:18,593 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} [2024-11-09 10:38:18,595 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -35 predicate places. [2024-11-09 10:38:18,595 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 158 flow [2024-11-09 10:38:18,595 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) [2024-11-09 10:38:18,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:18,596 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 10:38:18,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:38:18,598 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)] === [2024-11-09 10:38:18,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:18,599 INFO L85 PathProgramCache]: Analyzing trace with hash 118810337, now seen corresponding path program 1 times [2024-11-09 10:38:18,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:18,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482039831] [2024-11-09 10:38:18,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:18,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:18,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:18,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482039831] [2024-11-09 10:38:18,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482039831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:38:18,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:38:18,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:38:18,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660372365] [2024-11-09 10:38:18,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:38:18,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:38:18,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:18,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:38:18,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:38:18,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 117 [2024-11-09 10:38:18,816 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) [2024-11-09 10:38:18,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:18,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 117 [2024-11-09 10:38:18,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:19,002 INFO L124 PetriNetUnfolderBase]: 189/477 cut-off events. [2024-11-09 10:38:19,003 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2024-11-09 10:38:19,006 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. [2024-11-09 10:38:19,010 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 55 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2024-11-09 10:38:19,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 80 transitions, 288 flow [2024-11-09 10:38:19,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:38:19,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:38:19,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-09 10:38:19,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-09 10:38:19,013 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 158 flow. Second operand 4 states and 156 transitions. [2024-11-09 10:38:19,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 80 transitions, 288 flow [2024-11-09 10:38:19,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 287 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:38:19,017 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 178 flow [2024-11-09 10:38:19,017 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} [2024-11-09 10:38:19,018 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -32 predicate places. [2024-11-09 10:38:19,018 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 178 flow [2024-11-09 10:38:19,019 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) [2024-11-09 10:38:19,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:19,019 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 10:38:19,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:38:19,019 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)] === [2024-11-09 10:38:19,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:19,020 INFO L85 PathProgramCache]: Analyzing trace with hash 118810309, now seen corresponding path program 1 times [2024-11-09 10:38:19,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:19,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038679999] [2024-11-09 10:38:19,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:19,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:19,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:19,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038679999] [2024-11-09 10:38:19,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038679999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:38:19,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:38:19,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:38:19,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873341666] [2024-11-09 10:38:19,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:38:19,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:38:19,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:19,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:38:19,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:38:19,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 117 [2024-11-09 10:38:19,130 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) [2024-11-09 10:38:19,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:19,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 117 [2024-11-09 10:38:19,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:19,302 INFO L124 PetriNetUnfolderBase]: 188/473 cut-off events. [2024-11-09 10:38:19,302 INFO L125 PetriNetUnfolderBase]: For 8/10 co-relation queries the response was YES. [2024-11-09 10:38:19,304 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. [2024-11-09 10:38:19,306 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 51 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-11-09 10:38:19,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 76 transitions, 285 flow [2024-11-09 10:38:19,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:38:19,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:38:19,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-11-09 10:38:19,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3247863247863248 [2024-11-09 10:38:19,309 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 178 flow. Second operand 4 states and 152 transitions. [2024-11-09 10:38:19,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 76 transitions, 285 flow [2024-11-09 10:38:19,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 279 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-09 10:38:19,311 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 179 flow [2024-11-09 10:38:19,311 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} [2024-11-09 10:38:19,312 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -30 predicate places. [2024-11-09 10:38:19,312 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 179 flow [2024-11-09 10:38:19,313 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) [2024-11-09 10:38:19,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:19,313 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:38:19,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:38:19,313 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)] === [2024-11-09 10:38:19,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:19,314 INFO L85 PathProgramCache]: Analyzing trace with hash 426277240, now seen corresponding path program 1 times [2024-11-09 10:38:19,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:19,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590511059] [2024-11-09 10:38:19,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:19,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:19,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:19,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590511059] [2024-11-09 10:38:19,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590511059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:38:19,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994252817] [2024-11-09 10:38:19,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:19,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:38:19,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:38:19,550 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) [2024-11-09 10:38:19,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:38:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:19,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 10:38:19,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:38:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:19,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:38:19,918 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 [2024-11-09 10:38:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:19,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994252817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:38:19,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:38:19,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-09 10:38:19,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264602707] [2024-11-09 10:38:19,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:38:19,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 10:38:19,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:19,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 10:38:19,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-09 10:38:20,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-09 10:38:20,226 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) [2024-11-09 10:38:20,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:20,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-09 10:38:20,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:20,558 INFO L124 PetriNetUnfolderBase]: 189/477 cut-off events. [2024-11-09 10:38:20,559 INFO L125 PetriNetUnfolderBase]: For 10/12 co-relation queries the response was YES. [2024-11-09 10:38:20,561 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. [2024-11-09 10:38:20,564 INFO L140 encePairwiseOnDemand]: 111/117 looper letters, 54 selfloop transitions, 7 changer transitions 0/81 dead transitions. [2024-11-09 10:38:20,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 315 flow [2024-11-09 10:38:20,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:38:20,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:38:20,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-11-09 10:38:20,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27228327228327226 [2024-11-09 10:38:20,567 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 179 flow. Second operand 7 states and 223 transitions. [2024-11-09 10:38:20,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 315 flow [2024-11-09 10:38:20,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 81 transitions, 305 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:38:20,572 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 190 flow [2024-11-09 10:38:20,573 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} [2024-11-09 10:38:20,573 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -27 predicate places. [2024-11-09 10:38:20,575 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 190 flow [2024-11-09 10:38:20,576 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) [2024-11-09 10:38:20,576 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:20,576 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:38:20,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 10:38:20,776 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 [2024-11-09 10:38:20,777 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)] === [2024-11-09 10:38:20,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:20,778 INFO L85 PathProgramCache]: Analyzing trace with hash 426277212, now seen corresponding path program 1 times [2024-11-09 10:38:20,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:20,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156573324] [2024-11-09 10:38:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:20,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:20,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:20,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156573324] [2024-11-09 10:38:20,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156573324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:38:20,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536939911] [2024-11-09 10:38:20,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:20,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:38:20,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:38:20,913 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) [2024-11-09 10:38:20,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:38:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:21,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 10:38:21,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:38:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:21,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:38:21,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:21,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536939911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:38:21,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:38:21,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 10:38:21,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91470798] [2024-11-09 10:38:21,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:38:21,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 10:38:21,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:21,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 10:38:21,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-09 10:38:21,085 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-09 10:38:21,086 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) [2024-11-09 10:38:21,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:21,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-09 10:38:21,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:21,280 INFO L124 PetriNetUnfolderBase]: 188/475 cut-off events. [2024-11-09 10:38:21,281 INFO L125 PetriNetUnfolderBase]: For 16/18 co-relation queries the response was YES. [2024-11-09 10:38:21,282 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. [2024-11-09 10:38:21,286 INFO L140 encePairwiseOnDemand]: 111/117 looper letters, 52 selfloop transitions, 7 changer transitions 0/79 dead transitions. [2024-11-09 10:38:21,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 79 transitions, 319 flow [2024-11-09 10:38:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:38:21,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:38:21,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-11-09 10:38:21,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28205128205128205 [2024-11-09 10:38:21,289 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 190 flow. Second operand 6 states and 198 transitions. [2024-11-09 10:38:21,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 79 transitions, 319 flow [2024-11-09 10:38:21,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 308 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-09 10:38:21,293 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 200 flow [2024-11-09 10:38:21,293 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} [2024-11-09 10:38:21,294 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -25 predicate places. [2024-11-09 10:38:21,295 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 200 flow [2024-11-09 10:38:21,295 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) [2024-11-09 10:38:21,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:21,296 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 10:38:21,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 10:38:21,496 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 [2024-11-09 10:38:21,497 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)] === [2024-11-09 10:38:21,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:21,497 INFO L85 PathProgramCache]: Analyzing trace with hash -992457883, now seen corresponding path program 2 times [2024-11-09 10:38:21,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:21,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66409038] [2024-11-09 10:38:21,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:21,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:38:21,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:21,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66409038] [2024-11-09 10:38:21,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66409038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:38:21,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:38:21,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:38:21,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74728991] [2024-11-09 10:38:21,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:38:21,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:38:21,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:21,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:38:21,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:38:21,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 117 [2024-11-09 10:38:21,695 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) [2024-11-09 10:38:21,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:21,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 117 [2024-11-09 10:38:21,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:21,845 INFO L124 PetriNetUnfolderBase]: 188/474 cut-off events. [2024-11-09 10:38:21,845 INFO L125 PetriNetUnfolderBase]: For 17/19 co-relation queries the response was YES. [2024-11-09 10:38:21,846 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. [2024-11-09 10:38:21,849 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 50 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-09 10:38:21,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 302 flow [2024-11-09 10:38:21,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:38:21,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:38:21,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-09 10:38:21,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.358974358974359 [2024-11-09 10:38:21,850 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 200 flow. Second operand 3 states and 126 transitions. [2024-11-09 10:38:21,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 302 flow [2024-11-09 10:38:21,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 288 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:38:21,852 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 188 flow [2024-11-09 10:38:21,852 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} [2024-11-09 10:38:21,853 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -28 predicate places. [2024-11-09 10:38:21,853 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 188 flow [2024-11-09 10:38:21,855 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) [2024-11-09 10:38:21,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:21,855 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:38:21,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:38:21,855 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)] === [2024-11-09 10:38:21,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:21,859 INFO L85 PathProgramCache]: Analyzing trace with hash 242692767, now seen corresponding path program 1 times [2024-11-09 10:38:21,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:21,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751879219] [2024-11-09 10:38:21,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:21,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:21,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:38:21,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:21,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751879219] [2024-11-09 10:38:21,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751879219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:38:21,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:38:21,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:38:21,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774085630] [2024-11-09 10:38:21,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:38:21,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:38:21,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:21,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:38:21,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:38:22,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-09 10:38:22,006 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) [2024-11-09 10:38:22,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:22,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-09 10:38:22,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:22,104 INFO L124 PetriNetUnfolderBase]: 188/468 cut-off events. [2024-11-09 10:38:22,105 INFO L125 PetriNetUnfolderBase]: For 10/12 co-relation queries the response was YES. [2024-11-09 10:38:22,106 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. [2024-11-09 10:38:22,108 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 51 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2024-11-09 10:38:22,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 288 flow [2024-11-09 10:38:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:38:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:38:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-11-09 10:38:22,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34472934472934474 [2024-11-09 10:38:22,109 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 188 flow. Second operand 3 states and 121 transitions. [2024-11-09 10:38:22,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 288 flow [2024-11-09 10:38:22,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 73 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:38:22,112 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 182 flow [2024-11-09 10:38:22,112 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} [2024-11-09 10:38:22,113 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -30 predicate places. [2024-11-09 10:38:22,113 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 182 flow [2024-11-09 10:38:22,113 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) [2024-11-09 10:38:22,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:22,113 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:38:22,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:38:22,114 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)] === [2024-11-09 10:38:22,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:22,114 INFO L85 PathProgramCache]: Analyzing trace with hash 242692768, now seen corresponding path program 1 times [2024-11-09 10:38:22,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:22,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90526662] [2024-11-09 10:38:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:22,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:22,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:38:22,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:22,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90526662] [2024-11-09 10:38:22,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90526662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:38:22,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:38:22,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:38:22,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815923749] [2024-11-09 10:38:22,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:38:22,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:38:22,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:22,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:38:22,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:38:22,346 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-09 10:38:22,346 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) [2024-11-09 10:38:22,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:22,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-09 10:38:22,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:22,504 INFO L124 PetriNetUnfolderBase]: 151/421 cut-off events. [2024-11-09 10:38:22,505 INFO L125 PetriNetUnfolderBase]: For 10/13 co-relation queries the response was YES. [2024-11-09 10:38:22,505 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. [2024-11-09 10:38:22,507 INFO L140 encePairwiseOnDemand]: 109/117 looper letters, 83 selfloop transitions, 5 changer transitions 1/108 dead transitions. [2024-11-09 10:38:22,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 108 transitions, 430 flow [2024-11-09 10:38:22,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:38:22,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:38:22,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-11-09 10:38:22,509 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.391025641025641 [2024-11-09 10:38:22,509 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 182 flow. Second operand 4 states and 183 transitions. [2024-11-09 10:38:22,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 108 transitions, 430 flow [2024-11-09 10:38:22,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 108 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:38:22,512 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 199 flow [2024-11-09 10:38:22,512 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} [2024-11-09 10:38:22,513 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -27 predicate places. [2024-11-09 10:38:22,513 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 199 flow [2024-11-09 10:38:22,514 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) [2024-11-09 10:38:22,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:22,514 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:38:22,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 10:38:22,514 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)] === [2024-11-09 10:38:22,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:22,515 INFO L85 PathProgramCache]: Analyzing trace with hash -979843097, now seen corresponding path program 1 times [2024-11-09 10:38:22,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:22,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532227343] [2024-11-09 10:38:22,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:22,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:22,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:38:22,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:22,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532227343] [2024-11-09 10:38:22,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532227343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:38:22,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529750357] [2024-11-09 10:38:22,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:22,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:38:22,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:38:22,717 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) [2024-11-09 10:38:22,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:38:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:22,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:38:22,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:38:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:38:23,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:38:23,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:38:23,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529750357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:38:23,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:38:23,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-09 10:38:23,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833762366] [2024-11-09 10:38:23,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:38:23,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:38:23,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:23,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:38:23,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:38:23,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 117 [2024-11-09 10:38:23,230 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) [2024-11-09 10:38:23,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:23,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 117 [2024-11-09 10:38:23,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:23,480 INFO L124 PetriNetUnfolderBase]: 116/313 cut-off events. [2024-11-09 10:38:23,480 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-11-09 10:38:23,481 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. [2024-11-09 10:38:23,483 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 81 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-11-09 10:38:23,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 99 transitions, 406 flow [2024-11-09 10:38:23,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:38:23,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:38:23,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 189 transitions. [2024-11-09 10:38:23,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3230769230769231 [2024-11-09 10:38:23,484 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 199 flow. Second operand 5 states and 189 transitions. [2024-11-09 10:38:23,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 99 transitions, 406 flow [2024-11-09 10:38:23,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 99 transitions, 398 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:38:23,487 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 164 flow [2024-11-09 10:38:23,487 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} [2024-11-09 10:38:23,488 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -36 predicate places. [2024-11-09 10:38:23,488 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 164 flow [2024-11-09 10:38:23,488 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) [2024-11-09 10:38:23,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:23,489 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:38:23,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 10:38:23,692 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 [2024-11-09 10:38:23,693 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)] === [2024-11-09 10:38:23,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:23,694 INFO L85 PathProgramCache]: Analyzing trace with hash -310364262, now seen corresponding path program 1 times [2024-11-09 10:38:23,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:23,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933516137] [2024-11-09 10:38:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:23,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:38:23,721 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:38:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:38:23,768 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:38:23,769 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:38:23,770 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (87 of 88 remaining) [2024-11-09 10:38:23,774 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 88 remaining) [2024-11-09 10:38:23,774 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 88 remaining) [2024-11-09 10:38:23,774 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 88 remaining) [2024-11-09 10:38:23,774 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 88 remaining) [2024-11-09 10:38:23,774 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 88 remaining) [2024-11-09 10:38:23,774 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 88 remaining) [2024-11-09 10:38:23,775 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 88 remaining) [2024-11-09 10:38:23,775 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 88 remaining) [2024-11-09 10:38:23,775 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 88 remaining) [2024-11-09 10:38:23,775 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 88 remaining) [2024-11-09 10:38:23,775 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 88 remaining) [2024-11-09 10:38:23,775 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 88 remaining) [2024-11-09 10:38:23,775 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (74 of 88 remaining) [2024-11-09 10:38:23,775 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 88 remaining) [2024-11-09 10:38:23,775 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 88 remaining) [2024-11-09 10:38:23,776 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 88 remaining) [2024-11-09 10:38:23,776 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 88 remaining) [2024-11-09 10:38:23,776 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 88 remaining) [2024-11-09 10:38:23,776 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 88 remaining) [2024-11-09 10:38:23,776 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 88 remaining) [2024-11-09 10:38:23,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 88 remaining) [2024-11-09 10:38:23,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (65 of 88 remaining) [2024-11-09 10:38:23,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 88 remaining) [2024-11-09 10:38:23,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 88 remaining) [2024-11-09 10:38:23,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 88 remaining) [2024-11-09 10:38:23,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 88 remaining) [2024-11-09 10:38:23,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 88 remaining) [2024-11-09 10:38:23,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 88 remaining) [2024-11-09 10:38:23,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 88 remaining) [2024-11-09 10:38:23,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 88 remaining) [2024-11-09 10:38:23,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 88 remaining) [2024-11-09 10:38:23,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 88 remaining) [2024-11-09 10:38:23,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 88 remaining) [2024-11-09 10:38:23,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 88 remaining) [2024-11-09 10:38:23,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 88 remaining) [2024-11-09 10:38:23,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 88 remaining) [2024-11-09 10:38:23,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 88 remaining) [2024-11-09 10:38:23,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 88 remaining) [2024-11-09 10:38:23,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 88 remaining) [2024-11-09 10:38:23,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 88 remaining) [2024-11-09 10:38:23,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 88 remaining) [2024-11-09 10:38:23,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 88 remaining) [2024-11-09 10:38:23,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 88 remaining) [2024-11-09 10:38:23,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 88 remaining) [2024-11-09 10:38:23,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 88 remaining) [2024-11-09 10:38:23,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 88 remaining) [2024-11-09 10:38:23,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 88 remaining) [2024-11-09 10:38:23,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 88 remaining) [2024-11-09 10:38:23,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 88 remaining) [2024-11-09 10:38:23,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 88 remaining) [2024-11-09 10:38:23,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 88 remaining) [2024-11-09 10:38:23,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 88 remaining) [2024-11-09 10:38:23,783 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 88 remaining) [2024-11-09 10:38:23,783 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 88 remaining) [2024-11-09 10:38:23,783 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 88 remaining) [2024-11-09 10:38:23,783 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 88 remaining) [2024-11-09 10:38:23,783 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 88 remaining) [2024-11-09 10:38:23,784 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 88 remaining) [2024-11-09 10:38:23,784 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (28 of 88 remaining) [2024-11-09 10:38:23,784 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 88 remaining) [2024-11-09 10:38:23,784 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 88 remaining) [2024-11-09 10:38:23,784 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 88 remaining) [2024-11-09 10:38:23,784 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 88 remaining) [2024-11-09 10:38:23,784 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 88 remaining) [2024-11-09 10:38:23,784 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 88 remaining) [2024-11-09 10:38:23,784 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 88 remaining) [2024-11-09 10:38:23,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 88 remaining) [2024-11-09 10:38:23,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 88 remaining) [2024-11-09 10:38:23,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 88 remaining) [2024-11-09 10:38:23,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 88 remaining) [2024-11-09 10:38:23,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 88 remaining) [2024-11-09 10:38:23,786 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 88 remaining) [2024-11-09 10:38:23,786 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 88 remaining) [2024-11-09 10:38:23,786 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 88 remaining) [2024-11-09 10:38:23,786 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 88 remaining) [2024-11-09 10:38:23,786 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 88 remaining) [2024-11-09 10:38:23,786 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 88 remaining) [2024-11-09 10:38:23,786 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 88 remaining) [2024-11-09 10:38:23,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 88 remaining) [2024-11-09 10:38:23,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 88 remaining) [2024-11-09 10:38:23,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 88 remaining) [2024-11-09 10:38:23,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 88 remaining) [2024-11-09 10:38:23,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 88 remaining) [2024-11-09 10:38:23,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 88 remaining) [2024-11-09 10:38:23,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 88 remaining) [2024-11-09 10:38:23,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 88 remaining) [2024-11-09 10:38:23,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 88 remaining) [2024-11-09 10:38:23,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 10:38:23,788 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:38:23,791 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:38:23,791 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 10:38:23,842 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 10:38:23,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 201 transitions, 418 flow [2024-11-09 10:38:23,868 INFO L124 PetriNetUnfolderBase]: 26/237 cut-off events. [2024-11-09 10:38:23,868 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 10:38:23,871 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. [2024-11-09 10:38:23,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 201 transitions, 418 flow [2024-11-09 10:38:23,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 201 transitions, 418 flow [2024-11-09 10:38:23,878 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:38:23,879 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;@170b8962, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:38:23,879 INFO L334 AbstractCegarLoop]: Starting to check reachability of 125 error locations. [2024-11-09 10:38:23,880 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:38:23,880 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-09 10:38:23,881 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:38:23,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:23,881 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-09 10:38:23,881 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)] === [2024-11-09 10:38:23,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:23,882 INFO L85 PathProgramCache]: Analyzing trace with hash 25140, now seen corresponding path program 1 times [2024-11-09 10:38:23,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:23,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580183133] [2024-11-09 10:38:23,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:23,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:23,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:23,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:23,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580183133] [2024-11-09 10:38:23,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580183133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:38:23,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:38:23,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:38:23,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224064419] [2024-11-09 10:38:23,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:38:23,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:38:23,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:23,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:38:23,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:38:23,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 201 [2024-11-09 10:38:23,954 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) [2024-11-09 10:38:23,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:23,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 201 [2024-11-09 10:38:23,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:26,808 INFO L124 PetriNetUnfolderBase]: 19095/30098 cut-off events. [2024-11-09 10:38:26,809 INFO L125 PetriNetUnfolderBase]: For 330/335 co-relation queries the response was YES. [2024-11-09 10:38:26,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58614 conditions, 30098 events. 19095/30098 cut-off events. For 330/335 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. [2024-11-09 10:38:27,016 INFO L140 encePairwiseOnDemand]: 138/201 looper letters, 103 selfloop transitions, 1 changer transitions 0/137 dead transitions. [2024-11-09 10:38:27,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 137 transitions, 498 flow [2024-11-09 10:38:27,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:38:27,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:38:27,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2024-11-09 10:38:27,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4494195688225539 [2024-11-09 10:38:27,019 INFO L175 Difference]: Start difference. First operand has 181 places, 201 transitions, 418 flow. Second operand 3 states and 271 transitions. [2024-11-09 10:38:27,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 137 transitions, 498 flow [2024-11-09 10:38:27,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 137 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:38:27,022 INFO L231 Difference]: Finished difference. Result has 129 places, 137 transitions, 292 flow [2024-11-09 10:38:27,022 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} [2024-11-09 10:38:27,023 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -52 predicate places. [2024-11-09 10:38:27,024 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 137 transitions, 292 flow [2024-11-09 10:38:27,024 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) [2024-11-09 10:38:27,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:27,024 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-09 10:38:27,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 10:38:27,025 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)] === [2024-11-09 10:38:27,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:27,026 INFO L85 PathProgramCache]: Analyzing trace with hash 25141, now seen corresponding path program 1 times [2024-11-09 10:38:27,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:27,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633699218] [2024-11-09 10:38:27,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:27,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:27,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:27,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:27,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633699218] [2024-11-09 10:38:27,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633699218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:38:27,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:38:27,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:38:27,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224399729] [2024-11-09 10:38:27,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:38:27,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:38:27,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:27,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:38:27,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:38:27,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 201 [2024-11-09 10:38:27,117 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) [2024-11-09 10:38:27,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:27,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 201 [2024-11-09 10:38:27,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:29,105 INFO L124 PetriNetUnfolderBase]: 13222/20991 cut-off events. [2024-11-09 10:38:29,105 INFO L125 PetriNetUnfolderBase]: For 274/279 co-relation queries the response was YES. [2024-11-09 10:38:29,155 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. [2024-11-09 10:38:29,242 INFO L140 encePairwiseOnDemand]: 184/201 looper letters, 87 selfloop transitions, 1 changer transitions 0/121 dead transitions. [2024-11-09 10:38:29,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 121 transitions, 436 flow [2024-11-09 10:38:29,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:38:29,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:38:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 221 transitions. [2024-11-09 10:38:29,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36650082918739635 [2024-11-09 10:38:29,244 INFO L175 Difference]: Start difference. First operand has 129 places, 137 transitions, 292 flow. Second operand 3 states and 221 transitions. [2024-11-09 10:38:29,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 121 transitions, 436 flow [2024-11-09 10:38:29,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 121 transitions, 435 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:38:29,247 INFO L231 Difference]: Finished difference. Result has 114 places, 121 transitions, 261 flow [2024-11-09 10:38:29,247 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} [2024-11-09 10:38:29,249 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -67 predicate places. [2024-11-09 10:38:29,249 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 121 transitions, 261 flow [2024-11-09 10:38:29,249 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) [2024-11-09 10:38:29,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:29,249 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 10:38:29,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 10:38:29,250 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)] === [2024-11-09 10:38:29,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:29,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1770117697, now seen corresponding path program 1 times [2024-11-09 10:38:29,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:29,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505915309] [2024-11-09 10:38:29,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:29,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:29,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:29,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505915309] [2024-11-09 10:38:29,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505915309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:38:29,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:38:29,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:38:29,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108056697] [2024-11-09 10:38:29,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:38:29,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:38:29,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:29,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:38:29,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:38:29,414 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 201 [2024-11-09 10:38:29,415 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) [2024-11-09 10:38:29,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:29,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 201 [2024-11-09 10:38:29,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:30,742 INFO L124 PetriNetUnfolderBase]: 13223/20998 cut-off events. [2024-11-09 10:38:30,743 INFO L125 PetriNetUnfolderBase]: For 274/279 co-relation queries the response was YES. [2024-11-09 10:38:30,791 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. [2024-11-09 10:38:30,901 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 91 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2024-11-09 10:38:30,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 127 transitions, 463 flow [2024-11-09 10:38:30,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:38:30,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:38:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2024-11-09 10:38:30,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30845771144278605 [2024-11-09 10:38:30,905 INFO L175 Difference]: Start difference. First operand has 114 places, 121 transitions, 261 flow. Second operand 4 states and 248 transitions. [2024-11-09 10:38:30,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 127 transitions, 463 flow [2024-11-09 10:38:30,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 127 transitions, 462 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:38:30,910 INFO L231 Difference]: Finished difference. Result has 117 places, 123 transitions, 281 flow [2024-11-09 10:38:30,910 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} [2024-11-09 10:38:30,911 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -64 predicate places. [2024-11-09 10:38:30,912 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 123 transitions, 281 flow [2024-11-09 10:38:30,912 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) [2024-11-09 10:38:30,912 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:30,912 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 10:38:30,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 10:38:30,913 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)] === [2024-11-09 10:38:30,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:30,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1770117669, now seen corresponding path program 1 times [2024-11-09 10:38:30,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:30,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221299964] [2024-11-09 10:38:30,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:30,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:30,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:30,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221299964] [2024-11-09 10:38:30,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221299964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:38:30,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:38:30,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:38:30,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657142698] [2024-11-09 10:38:30,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:38:30,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:38:30,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:30,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:38:30,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:38:31,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 201 [2024-11-09 10:38:31,001 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) [2024-11-09 10:38:31,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:31,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 201 [2024-11-09 10:38:31,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:33,065 INFO L124 PetriNetUnfolderBase]: 13222/20994 cut-off events. [2024-11-09 10:38:33,065 INFO L125 PetriNetUnfolderBase]: For 276/281 co-relation queries the response was YES. [2024-11-09 10:38:33,098 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. [2024-11-09 10:38:33,190 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 87 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2024-11-09 10:38:33,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 123 transitions, 460 flow [2024-11-09 10:38:33,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:38:33,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:38:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2024-11-09 10:38:33,192 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3034825870646766 [2024-11-09 10:38:33,192 INFO L175 Difference]: Start difference. First operand has 117 places, 123 transitions, 281 flow. Second operand 4 states and 244 transitions. [2024-11-09 10:38:33,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 123 transitions, 460 flow [2024-11-09 10:38:33,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 123 transitions, 454 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-09 10:38:33,195 INFO L231 Difference]: Finished difference. Result has 119 places, 122 transitions, 282 flow [2024-11-09 10:38:33,195 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} [2024-11-09 10:38:33,196 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -62 predicate places. [2024-11-09 10:38:33,197 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 122 transitions, 282 flow [2024-11-09 10:38:33,198 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) [2024-11-09 10:38:33,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:33,198 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:38:33,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 10:38:33,198 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)] === [2024-11-09 10:38:33,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:33,199 INFO L85 PathProgramCache]: Analyzing trace with hash -31369791, now seen corresponding path program 1 times [2024-11-09 10:38:33,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:33,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582892353] [2024-11-09 10:38:33,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:33,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:33,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:33,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:33,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582892353] [2024-11-09 10:38:33,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582892353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:38:33,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989248319] [2024-11-09 10:38:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:33,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:38:33,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:38:33,393 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) [2024-11-09 10:38:33,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 10:38:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:33,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 10:38:33,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:38:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:33,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:38:33,653 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 [2024-11-09 10:38:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:33,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989248319] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:38:33,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:38:33,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-09 10:38:33,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366221739] [2024-11-09 10:38:33,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:38:33,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 10:38:33,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:33,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 10:38:33,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-09 10:38:34,095 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 201 [2024-11-09 10:38:34,096 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) [2024-11-09 10:38:34,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:34,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 201 [2024-11-09 10:38:34,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:35,858 INFO L124 PetriNetUnfolderBase]: 13223/20998 cut-off events. [2024-11-09 10:38:35,859 INFO L125 PetriNetUnfolderBase]: For 278/283 co-relation queries the response was YES. [2024-11-09 10:38:35,898 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. [2024-11-09 10:38:36,237 INFO L140 encePairwiseOnDemand]: 195/201 looper letters, 90 selfloop transitions, 7 changer transitions 0/128 dead transitions. [2024-11-09 10:38:36,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 128 transitions, 490 flow [2024-11-09 10:38:36,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:38:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:38:36,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 357 transitions. [2024-11-09 10:38:36,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2537313432835821 [2024-11-09 10:38:36,240 INFO L175 Difference]: Start difference. First operand has 119 places, 122 transitions, 282 flow. Second operand 7 states and 357 transitions. [2024-11-09 10:38:36,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 128 transitions, 490 flow [2024-11-09 10:38:36,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 128 transitions, 480 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:38:36,246 INFO L231 Difference]: Finished difference. Result has 122 places, 123 transitions, 293 flow [2024-11-09 10:38:36,246 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} [2024-11-09 10:38:36,247 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -59 predicate places. [2024-11-09 10:38:36,247 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 123 transitions, 293 flow [2024-11-09 10:38:36,248 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) [2024-11-09 10:38:36,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:36,248 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:38:36,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 10:38:36,448 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 [2024-11-09 10:38:36,449 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)] === [2024-11-09 10:38:36,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:36,449 INFO L85 PathProgramCache]: Analyzing trace with hash -31369819, now seen corresponding path program 1 times [2024-11-09 10:38:36,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:36,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654840756] [2024-11-09 10:38:36,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:36,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:36,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:36,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:36,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654840756] [2024-11-09 10:38:36,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654840756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:38:36,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238333081] [2024-11-09 10:38:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:36,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:38:36,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:38:36,532 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) [2024-11-09 10:38:36,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 10:38:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:36,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 10:38:36,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:38:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:36,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:38:36,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:36,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238333081] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:38:36,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:38:36,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 10:38:36,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008054601] [2024-11-09 10:38:36,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:38:36,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 10:38:36,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:36,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 10:38:36,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-09 10:38:36,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 201 [2024-11-09 10:38:36,691 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) [2024-11-09 10:38:36,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:36,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 201 [2024-11-09 10:38:36,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:38,119 INFO L124 PetriNetUnfolderBase]: 13222/20996 cut-off events. [2024-11-09 10:38:38,119 INFO L125 PetriNetUnfolderBase]: For 284/289 co-relation queries the response was YES. [2024-11-09 10:38:38,153 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. [2024-11-09 10:38:38,225 INFO L140 encePairwiseOnDemand]: 195/201 looper letters, 88 selfloop transitions, 7 changer transitions 0/126 dead transitions. [2024-11-09 10:38:38,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 126 transitions, 494 flow [2024-11-09 10:38:38,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:38:38,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:38:38,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 318 transitions. [2024-11-09 10:38:38,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.263681592039801 [2024-11-09 10:38:38,228 INFO L175 Difference]: Start difference. First operand has 122 places, 123 transitions, 293 flow. Second operand 6 states and 318 transitions. [2024-11-09 10:38:38,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 126 transitions, 494 flow [2024-11-09 10:38:38,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 126 transitions, 483 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-09 10:38:38,231 INFO L231 Difference]: Finished difference. Result has 124 places, 123 transitions, 303 flow [2024-11-09 10:38:38,232 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} [2024-11-09 10:38:38,232 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -57 predicate places. [2024-11-09 10:38:38,232 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 123 transitions, 303 flow [2024-11-09 10:38:38,233 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) [2024-11-09 10:38:38,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:38,233 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 10:38:38,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 10:38:38,434 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 [2024-11-09 10:38:38,434 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)] === [2024-11-09 10:38:38,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:38,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1766205989, now seen corresponding path program 2 times [2024-11-09 10:38:38,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:38,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66441164] [2024-11-09 10:38:38,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:38,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:38,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:38:38,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:38,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66441164] [2024-11-09 10:38:38,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66441164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:38:38,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:38:38,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:38:38,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932620677] [2024-11-09 10:38:38,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:38:38,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:38:38,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:38,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:38:38,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:38:38,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 201 [2024-11-09 10:38:38,764 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) [2024-11-09 10:38:38,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:38,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 201 [2024-11-09 10:38:38,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:40,419 INFO L124 PetriNetUnfolderBase]: 13222/20995 cut-off events. [2024-11-09 10:38:40,420 INFO L125 PetriNetUnfolderBase]: For 285/290 co-relation queries the response was YES. [2024-11-09 10:38:40,475 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. [2024-11-09 10:38:40,530 INFO L140 encePairwiseOnDemand]: 198/201 looper letters, 86 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2024-11-09 10:38:40,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 122 transitions, 477 flow [2024-11-09 10:38:40,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:38:40,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:38:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 204 transitions. [2024-11-09 10:38:40,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3383084577114428 [2024-11-09 10:38:40,532 INFO L175 Difference]: Start difference. First operand has 124 places, 123 transitions, 303 flow. Second operand 3 states and 204 transitions. [2024-11-09 10:38:40,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 122 transitions, 477 flow [2024-11-09 10:38:40,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 122 transitions, 463 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:38:40,535 INFO L231 Difference]: Finished difference. Result has 121 places, 122 transitions, 291 flow [2024-11-09 10:38:40,535 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} [2024-11-09 10:38:40,535 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -60 predicate places. [2024-11-09 10:38:40,536 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 122 transitions, 291 flow [2024-11-09 10:38:40,536 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) [2024-11-09 10:38:40,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:40,536 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:38:40,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 10:38:40,536 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)] === [2024-11-09 10:38:40,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:40,537 INFO L85 PathProgramCache]: Analyzing trace with hash -600905848, now seen corresponding path program 1 times [2024-11-09 10:38:40,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:40,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946369925] [2024-11-09 10:38:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:40,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:38:40,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:40,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946369925] [2024-11-09 10:38:40,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946369925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:38:40,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:38:40,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:38:40,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911592336] [2024-11-09 10:38:40,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:38:40,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:38:40,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:40,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:38:40,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:38:40,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 201 [2024-11-09 10:38:40,682 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) [2024-11-09 10:38:40,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:40,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 201 [2024-11-09 10:38:40,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:42,376 INFO L124 PetriNetUnfolderBase]: 13222/20979 cut-off events. [2024-11-09 10:38:42,376 INFO L125 PetriNetUnfolderBase]: For 278/283 co-relation queries the response was YES. [2024-11-09 10:38:42,412 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. [2024-11-09 10:38:42,481 INFO L140 encePairwiseOnDemand]: 198/201 looper letters, 87 selfloop transitions, 1 changer transitions 0/120 dead transitions. [2024-11-09 10:38:42,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 120 transitions, 463 flow [2024-11-09 10:38:42,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:38:42,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:38:42,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2024-11-09 10:38:42,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33001658374792703 [2024-11-09 10:38:42,483 INFO L175 Difference]: Start difference. First operand has 121 places, 122 transitions, 291 flow. Second operand 3 states and 199 transitions. [2024-11-09 10:38:42,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 120 transitions, 463 flow [2024-11-09 10:38:42,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 120 transitions, 459 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:38:42,486 INFO L231 Difference]: Finished difference. Result has 119 places, 120 transitions, 285 flow [2024-11-09 10:38:42,486 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} [2024-11-09 10:38:42,487 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -62 predicate places. [2024-11-09 10:38:42,487 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 120 transitions, 285 flow [2024-11-09 10:38:42,487 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) [2024-11-09 10:38:42,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:42,487 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:38:42,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 10:38:42,488 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)] === [2024-11-09 10:38:42,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:42,488 INFO L85 PathProgramCache]: Analyzing trace with hash -600905847, now seen corresponding path program 1 times [2024-11-09 10:38:42,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:42,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113059881] [2024-11-09 10:38:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:42,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:42,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:38:42,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:42,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113059881] [2024-11-09 10:38:42,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113059881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:38:42,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:38:42,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:38:42,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254587153] [2024-11-09 10:38:42,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:38:42,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:38:42,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:42,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:38:42,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:38:42,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 201 [2024-11-09 10:38:42,712 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) [2024-11-09 10:38:42,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:42,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 201 [2024-11-09 10:38:42,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:44,109 INFO L124 PetriNetUnfolderBase]: 11052/18318 cut-off events. [2024-11-09 10:38:44,110 INFO L125 PetriNetUnfolderBase]: For 444/546 co-relation queries the response was YES. [2024-11-09 10:38:44,142 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. [2024-11-09 10:38:44,188 INFO L140 encePairwiseOnDemand]: 193/201 looper letters, 158 selfloop transitions, 5 changer transitions 0/193 dead transitions. [2024-11-09 10:38:44,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 193 transitions, 763 flow [2024-11-09 10:38:44,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:38:44,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:38:44,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2024-11-09 10:38:44,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38930348258706465 [2024-11-09 10:38:44,190 INFO L175 Difference]: Start difference. First operand has 119 places, 120 transitions, 285 flow. Second operand 4 states and 313 transitions. [2024-11-09 10:38:44,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 193 transitions, 763 flow [2024-11-09 10:38:44,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 193 transitions, 762 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:38:44,193 INFO L231 Difference]: Finished difference. Result has 122 places, 122 transitions, 312 flow [2024-11-09 10:38:44,193 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} [2024-11-09 10:38:44,194 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -59 predicate places. [2024-11-09 10:38:44,194 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 122 transitions, 312 flow [2024-11-09 10:38:44,194 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) [2024-11-09 10:38:44,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:44,194 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:38:44,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 10:38:44,195 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)] === [2024-11-09 10:38:44,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:44,195 INFO L85 PathProgramCache]: Analyzing trace with hash -710045442, now seen corresponding path program 1 times [2024-11-09 10:38:44,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:44,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397073964] [2024-11-09 10:38:44,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:44,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:38:44,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:44,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397073964] [2024-11-09 10:38:44,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397073964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:38:44,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637755105] [2024-11-09 10:38:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:44,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:38:44,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:38:44,380 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) [2024-11-09 10:38:44,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 10:38:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:44,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:38:44,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:38:44,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:38:44,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:38:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:38:44,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637755105] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:38:44,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:38:44,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-09 10:38:44,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277032136] [2024-11-09 10:38:44,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:38:44,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:38:44,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:44,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:38:44,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:38:44,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 201 [2024-11-09 10:38:44,929 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) [2024-11-09 10:38:44,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:44,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 201 [2024-11-09 10:38:44,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:38:46,159 INFO L124 PetriNetUnfolderBase]: 8372/14128 cut-off events. [2024-11-09 10:38:46,159 INFO L125 PetriNetUnfolderBase]: For 2352/2352 co-relation queries the response was YES. [2024-11-09 10:38:46,178 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. [2024-11-09 10:38:46,214 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 186 selfloop transitions, 4 changer transitions 0/216 dead transitions. [2024-11-09 10:38:46,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 216 transitions, 860 flow [2024-11-09 10:38:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:38:46,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:38:46,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 402 transitions. [2024-11-09 10:38:46,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-09 10:38:46,217 INFO L175 Difference]: Start difference. First operand has 122 places, 122 transitions, 312 flow. Second operand 6 states and 402 transitions. [2024-11-09 10:38:46,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 216 transitions, 860 flow [2024-11-09 10:38:46,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 216 transitions, 856 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:38:46,222 INFO L231 Difference]: Finished difference. Result has 116 places, 110 transitions, 272 flow [2024-11-09 10:38:46,222 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} [2024-11-09 10:38:46,223 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -65 predicate places. [2024-11-09 10:38:46,223 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 110 transitions, 272 flow [2024-11-09 10:38:46,224 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) [2024-11-09 10:38:46,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:46,224 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:38:46,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 10:38:46,424 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 [2024-11-09 10:38:46,425 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)] === [2024-11-09 10:38:46,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:46,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1341956522, now seen corresponding path program 1 times [2024-11-09 10:38:46,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:46,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764979019] [2024-11-09 10:38:46,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:46,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:38:46,458 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:38:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:38:46,484 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:38:46,484 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:38:46,485 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (124 of 125 remaining) [2024-11-09 10:38:46,485 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (123 of 125 remaining) [2024-11-09 10:38:46,485 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (122 of 125 remaining) [2024-11-09 10:38:46,485 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (121 of 125 remaining) [2024-11-09 10:38:46,485 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (120 of 125 remaining) [2024-11-09 10:38:46,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (119 of 125 remaining) [2024-11-09 10:38:46,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (118 of 125 remaining) [2024-11-09 10:38:46,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 125 remaining) [2024-11-09 10:38:46,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 125 remaining) [2024-11-09 10:38:46,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 125 remaining) [2024-11-09 10:38:46,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 125 remaining) [2024-11-09 10:38:46,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 125 remaining) [2024-11-09 10:38:46,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 125 remaining) [2024-11-09 10:38:46,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (111 of 125 remaining) [2024-11-09 10:38:46,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 125 remaining) [2024-11-09 10:38:46,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 125 remaining) [2024-11-09 10:38:46,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 125 remaining) [2024-11-09 10:38:46,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 125 remaining) [2024-11-09 10:38:46,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 125 remaining) [2024-11-09 10:38:46,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 125 remaining) [2024-11-09 10:38:46,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 125 remaining) [2024-11-09 10:38:46,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 125 remaining) [2024-11-09 10:38:46,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (102 of 125 remaining) [2024-11-09 10:38:46,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 125 remaining) [2024-11-09 10:38:46,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 125 remaining) [2024-11-09 10:38:46,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 125 remaining) [2024-11-09 10:38:46,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 125 remaining) [2024-11-09 10:38:46,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 125 remaining) [2024-11-09 10:38:46,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 125 remaining) [2024-11-09 10:38:46,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 125 remaining) [2024-11-09 10:38:46,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 125 remaining) [2024-11-09 10:38:46,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 125 remaining) [2024-11-09 10:38:46,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 125 remaining) [2024-11-09 10:38:46,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 125 remaining) [2024-11-09 10:38:46,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 125 remaining) [2024-11-09 10:38:46,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 125 remaining) [2024-11-09 10:38:46,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 125 remaining) [2024-11-09 10:38:46,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 125 remaining) [2024-11-09 10:38:46,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 125 remaining) [2024-11-09 10:38:46,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 125 remaining) [2024-11-09 10:38:46,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 125 remaining) [2024-11-09 10:38:46,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 125 remaining) [2024-11-09 10:38:46,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 125 remaining) [2024-11-09 10:38:46,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 125 remaining) [2024-11-09 10:38:46,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 125 remaining) [2024-11-09 10:38:46,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 125 remaining) [2024-11-09 10:38:46,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 125 remaining) [2024-11-09 10:38:46,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 125 remaining) [2024-11-09 10:38:46,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 125 remaining) [2024-11-09 10:38:46,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 125 remaining) [2024-11-09 10:38:46,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 125 remaining) [2024-11-09 10:38:46,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 125 remaining) [2024-11-09 10:38:46,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 125 remaining) [2024-11-09 10:38:46,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 125 remaining) [2024-11-09 10:38:46,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 125 remaining) [2024-11-09 10:38:46,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 125 remaining) [2024-11-09 10:38:46,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 125 remaining) [2024-11-09 10:38:46,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 125 remaining) [2024-11-09 10:38:46,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 125 remaining) [2024-11-09 10:38:46,495 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (65 of 125 remaining) [2024-11-09 10:38:46,495 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 125 remaining) [2024-11-09 10:38:46,495 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 125 remaining) [2024-11-09 10:38:46,495 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 125 remaining) [2024-11-09 10:38:46,495 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 125 remaining) [2024-11-09 10:38:46,495 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 125 remaining) [2024-11-09 10:38:46,496 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 125 remaining) [2024-11-09 10:38:46,496 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 125 remaining) [2024-11-09 10:38:46,496 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 125 remaining) [2024-11-09 10:38:46,496 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 125 remaining) [2024-11-09 10:38:46,496 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 125 remaining) [2024-11-09 10:38:46,496 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 125 remaining) [2024-11-09 10:38:46,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 125 remaining) [2024-11-09 10:38:46,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 125 remaining) [2024-11-09 10:38:46,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 125 remaining) [2024-11-09 10:38:46,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 125 remaining) [2024-11-09 10:38:46,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 125 remaining) [2024-11-09 10:38:46,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 125 remaining) [2024-11-09 10:38:46,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 125 remaining) [2024-11-09 10:38:46,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 125 remaining) [2024-11-09 10:38:46,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 125 remaining) [2024-11-09 10:38:46,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 125 remaining) [2024-11-09 10:38:46,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 125 remaining) [2024-11-09 10:38:46,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 125 remaining) [2024-11-09 10:38:46,499 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 125 remaining) [2024-11-09 10:38:46,499 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 125 remaining) [2024-11-09 10:38:46,499 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 125 remaining) [2024-11-09 10:38:46,499 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 125 remaining) [2024-11-09 10:38:46,499 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 125 remaining) [2024-11-09 10:38:46,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 125 remaining) [2024-11-09 10:38:46,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 125 remaining) [2024-11-09 10:38:46,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 125 remaining) [2024-11-09 10:38:46,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 125 remaining) [2024-11-09 10:38:46,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 125 remaining) [2024-11-09 10:38:46,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 125 remaining) [2024-11-09 10:38:46,501 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 125 remaining) [2024-11-09 10:38:46,501 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 125 remaining) [2024-11-09 10:38:46,501 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (28 of 125 remaining) [2024-11-09 10:38:46,501 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 125 remaining) [2024-11-09 10:38:46,501 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 125 remaining) [2024-11-09 10:38:46,501 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 125 remaining) [2024-11-09 10:38:46,502 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 125 remaining) [2024-11-09 10:38:46,502 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 125 remaining) [2024-11-09 10:38:46,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 125 remaining) [2024-11-09 10:38:46,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 125 remaining) [2024-11-09 10:38:46,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 125 remaining) [2024-11-09 10:38:46,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 125 remaining) [2024-11-09 10:38:46,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 125 remaining) [2024-11-09 10:38:46,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 125 remaining) [2024-11-09 10:38:46,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 125 remaining) [2024-11-09 10:38:46,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 125 remaining) [2024-11-09 10:38:46,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 125 remaining) [2024-11-09 10:38:46,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 125 remaining) [2024-11-09 10:38:46,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 125 remaining) [2024-11-09 10:38:46,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 125 remaining) [2024-11-09 10:38:46,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 125 remaining) [2024-11-09 10:38:46,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 125 remaining) [2024-11-09 10:38:46,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 125 remaining) [2024-11-09 10:38:46,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 125 remaining) [2024-11-09 10:38:46,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 125 remaining) [2024-11-09 10:38:46,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 125 remaining) [2024-11-09 10:38:46,507 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 125 remaining) [2024-11-09 10:38:46,508 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 125 remaining) [2024-11-09 10:38:46,508 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 125 remaining) [2024-11-09 10:38:46,508 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 125 remaining) [2024-11-09 10:38:46,508 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 125 remaining) [2024-11-09 10:38:46,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 10:38:46,508 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:38:46,509 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:38:46,513 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 10:38:46,595 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 10:38:46,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 285 transitions, 597 flow [2024-11-09 10:38:46,659 INFO L124 PetriNetUnfolderBase]: 42/366 cut-off events. [2024-11-09 10:38:46,660 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-09 10:38:46,666 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. [2024-11-09 10:38:46,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 285 transitions, 597 flow [2024-11-09 10:38:46,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 285 transitions, 597 flow [2024-11-09 10:38:46,678 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:38:46,679 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;@170b8962, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:38:46,681 INFO L334 AbstractCegarLoop]: Starting to check reachability of 162 error locations. [2024-11-09 10:38:46,682 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:38:46,682 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-09 10:38:46,682 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:38:46,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:38:46,683 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-09 10:38:46,683 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)] === [2024-11-09 10:38:46,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:38:46,683 INFO L85 PathProgramCache]: Analyzing trace with hash 34260, now seen corresponding path program 1 times [2024-11-09 10:38:46,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:38:46,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939396059] [2024-11-09 10:38:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:38:46,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:38:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:38:46,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:38:46,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:38:46,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939396059] [2024-11-09 10:38:46,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939396059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:38:46,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:38:46,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:38:46,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085731959] [2024-11-09 10:38:46,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:38:46,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:38:46,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:38:46,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:38:46,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:38:46,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 285 [2024-11-09 10:38:46,765 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) [2024-11-09 10:38:46,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:38:46,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 285 [2024-11-09 10:38:46,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand