./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/safe019_power.opt.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-wmm/safe019_power.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:35:25,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:35:25,954 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:35:25,959 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:35:25,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:35:25,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:35:25,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:35:25,983 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:35:25,983 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:35:25,984 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:35:25,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:35:25,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:35:25,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:35:25,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:35:25,985 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:35:25,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:35:25,985 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:35:25,986 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:35:25,986 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:35:25,989 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:35:25,989 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:35:25,990 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:35:25,992 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:35:25,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:35:25,993 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:35:25,993 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:35:25,993 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:35:25,993 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:35:25,993 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:35:25,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:35:25,994 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:35:25,994 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:35:25,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:35:25,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:35:25,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:35:25,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:35:25,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:35:25,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:35:25,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:35:25,997 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:35:25,997 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:35:25,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:35:25,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 [2024-11-09 10:35:26,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:35:26,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:35:26,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:35:26,241 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:35:26,241 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:35:26,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_power.opt.i [2024-11-09 10:35:27,475 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:35:27,664 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:35:27,665 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_power.opt.i [2024-11-09 10:35:27,679 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d9a196f9/4b15dc788ba54cb9a93ccae2e862da36/FLAGafe329098 [2024-11-09 10:35:27,690 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d9a196f9/4b15dc788ba54cb9a93ccae2e862da36 [2024-11-09 10:35:27,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:35:27,693 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:35:27,695 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:35:27,695 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:35:27,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:35:27,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:35:27" (1/1) ... [2024-11-09 10:35:27,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db1c388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:27, skipping insertion in model container [2024-11-09 10:35:27,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:35:27" (1/1) ... [2024-11-09 10:35:27,740 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:35:28,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:35:28,083 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:35:28,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:35:28,165 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:35:28,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:28 WrapperNode [2024-11-09 10:35:28,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:35:28,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:35:28,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:35:28,167 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:35:28,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:28" (1/1) ... [2024-11-09 10:35:28,196 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:28" (1/1) ... [2024-11-09 10:35:28,232 INFO L138 Inliner]: procedures = 176, calls = 73, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 182 [2024-11-09 10:35:28,233 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:35:28,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:35:28,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:35:28,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:35:28,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:28" (1/1) ... [2024-11-09 10:35:28,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:28" (1/1) ... [2024-11-09 10:35:28,247 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:28" (1/1) ... [2024-11-09 10:35:28,272 INFO L175 MemorySlicer]: Split 26 memory accesses to 2 slices as follows [2, 24]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 8 writes are split as follows [0, 8]. [2024-11-09 10:35:28,273 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:28" (1/1) ... [2024-11-09 10:35:28,273 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:28" (1/1) ... [2024-11-09 10:35:28,286 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:28" (1/1) ... [2024-11-09 10:35:28,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:28" (1/1) ... [2024-11-09 10:35:28,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:28" (1/1) ... [2024-11-09 10:35:28,299 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:28" (1/1) ... [2024-11-09 10:35:28,304 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:35:28,305 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:35:28,305 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:35:28,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:35:28,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:28" (1/1) ... [2024-11-09 10:35:28,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:35:28,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:35:28,338 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 10:35:28,340 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 10:35:28,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 10:35:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 10:35:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 10:35:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 10:35:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 10:35:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:35:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-09 10:35:28,385 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-09 10:35:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-09 10:35:28,385 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-09 10:35:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-09 10:35:28,386 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-09 10:35:28,386 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-09 10:35:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-09 10:35:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:35:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:35:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 10:35:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:35:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:35:28,389 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 10:35:28,611 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:35:28,613 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:35:29,087 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:35:29,087 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:35:29,576 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:35:29,579 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 10:35:29,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:35:29 BoogieIcfgContainer [2024-11-09 10:35:29,580 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:35:29,582 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:35:29,585 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:35:29,587 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:35:29,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:35:27" (1/3) ... [2024-11-09 10:35:29,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c56c73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:35:29, skipping insertion in model container [2024-11-09 10:35:29,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:28" (2/3) ... [2024-11-09 10:35:29,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c56c73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:35:29, skipping insertion in model container [2024-11-09 10:35:29,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:35:29" (3/3) ... [2024-11-09 10:35:29,590 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_power.opt.i [2024-11-09 10:35:29,606 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:35:29,606 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2024-11-09 10:35:29,606 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:35:29,755 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:35:29,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 97 transitions, 210 flow [2024-11-09 10:35:29,866 INFO L124 PetriNetUnfolderBase]: 2/93 cut-off events. [2024-11-09 10:35:29,866 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:35:29,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 391 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2024-11-09 10:35:29,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 97 transitions, 210 flow [2024-11-09 10:35:29,878 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 93 transitions, 198 flow [2024-11-09 10:35:29,888 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:35:29,897 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;@1ab21147, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:35:29,897 INFO L334 AbstractCegarLoop]: Starting to check reachability of 94 error locations. [2024-11-09 10:35:29,903 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:35:29,903 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-09 10:35:29,903 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:35:29,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:35:29,905 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 10:35:29,905 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-09 10:35:29,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:35:29,910 INFO L85 PathProgramCache]: Analyzing trace with hash 975322582, now seen corresponding path program 1 times [2024-11-09 10:35:29,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:35:29,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359089210] [2024-11-09 10:35:29,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:35:29,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:35:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:35:30,202 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 10:35:30,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:35:30,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359089210] [2024-11-09 10:35:30,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359089210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:35:30,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:35:30,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:35:30,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332583595] [2024-11-09 10:35:30,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:35:30,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:35:30,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:35:30,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:35:30,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:35:30,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-11-09 10:35:30,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 93 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:35:30,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:35:30,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-11-09 10:35:30,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:35:39,098 INFO L124 PetriNetUnfolderBase]: 41670/60435 cut-off events. [2024-11-09 10:35:39,098 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 10:35:39,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115766 conditions, 60435 events. 41670/60435 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3712. Compared 492540 event pairs, 41670 based on Foata normal form. 1960/38305 useless extension candidates. Maximal degree in co-relation 115754. Up to 54867 conditions per place. [2024-11-09 10:35:39,528 INFO L140 encePairwiseOnDemand]: 60/97 looper letters, 38 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2024-11-09 10:35:39,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 56 transitions, 202 flow [2024-11-09 10:35:39,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:35:39,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:35:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-11-09 10:35:39,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4742268041237113 [2024-11-09 10:35:39,543 INFO L175 Difference]: Start difference. First operand has 104 places, 93 transitions, 198 flow. Second operand 3 states and 138 transitions. [2024-11-09 10:35:39,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 56 transitions, 202 flow [2024-11-09 10:35:39,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 56 transitions, 198 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:35:39,573 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 122 flow [2024-11-09 10:35:39,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-11-09 10:35:39,579 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -37 predicate places. [2024-11-09 10:35:39,581 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 122 flow [2024-11-09 10:35:39,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:35:39,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:35:39,582 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 10:35:39,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:35:39,583 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-09 10:35:39,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:35:39,584 INFO L85 PathProgramCache]: Analyzing trace with hash 975322583, now seen corresponding path program 1 times [2024-11-09 10:35:39,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:35:39,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244845337] [2024-11-09 10:35:39,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:35:39,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:35:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:35:39,711 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 10:35:39,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:35:39,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244845337] [2024-11-09 10:35:39,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244845337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:35:39,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:35:39,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:35:39,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032527265] [2024-11-09 10:35:39,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:35:39,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:35:39,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:35:39,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:35:39,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:35:39,715 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-11-09 10:35:39,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:35:39,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:35:39,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-11-09 10:35:39,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:35:41,065 INFO L124 PetriNetUnfolderBase]: 5844/9113 cut-off events. [2024-11-09 10:35:41,065 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:35:41,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17256 conditions, 9113 events. 5844/9113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 65049 event pairs, 5844 based on Foata normal form. 0/8156 useless extension candidates. Maximal degree in co-relation 17250. Up to 7981 conditions per place. [2024-11-09 10:35:41,113 INFO L140 encePairwiseOnDemand]: 86/97 looper letters, 28 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2024-11-09 10:35:41,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 46 transitions, 160 flow [2024-11-09 10:35:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:35:41,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:35:41,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-09 10:35:41,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35051546391752575 [2024-11-09 10:35:41,115 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 122 flow. Second operand 3 states and 102 transitions. [2024-11-09 10:35:41,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 46 transitions, 160 flow [2024-11-09 10:35:41,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 46 transitions, 159 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:35:41,116 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 103 flow [2024-11-09 10:35:41,117 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2024-11-09 10:35:41,117 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -46 predicate places. [2024-11-09 10:35:41,117 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 103 flow [2024-11-09 10:35:41,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:35:41,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:35:41,118 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 10:35:41,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:35:41,118 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-09 10:35:41,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:35:41,119 INFO L85 PathProgramCache]: Analyzing trace with hash 168565117, now seen corresponding path program 1 times [2024-11-09 10:35:41,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:35:41,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126011400] [2024-11-09 10:35:41,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:35:41,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:35:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:35:41,194 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 10:35:41,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:35:41,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126011400] [2024-11-09 10:35:41,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126011400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:35:41,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:35:41,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:35:41,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015687728] [2024-11-09 10:35:41,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:35:41,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:35:41,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:35:41,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:35:41,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:35:41,196 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-11-09 10:35:41,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:35:41,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:35:41,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-11-09 10:35:41,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:35:42,251 INFO L124 PetriNetUnfolderBase]: 4591/7092 cut-off events. [2024-11-09 10:35:42,251 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:35:42,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13527 conditions, 7092 events. 4591/7092 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 47932 event pairs, 1360 based on Foata normal form. 0/6756 useless extension candidates. Maximal degree in co-relation 13520. Up to 5038 conditions per place. [2024-11-09 10:35:42,287 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 45 selfloop transitions, 2 changer transitions 2/66 dead transitions. [2024-11-09 10:35:42,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 245 flow [2024-11-09 10:35:42,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:35:42,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:35:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-09 10:35:42,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38831615120274915 [2024-11-09 10:35:42,289 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 103 flow. Second operand 3 states and 113 transitions. [2024-11-09 10:35:42,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 245 flow [2024-11-09 10:35:42,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:35:42,291 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 102 flow [2024-11-09 10:35:42,291 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-11-09 10:35:42,291 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -46 predicate places. [2024-11-09 10:35:42,292 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 102 flow [2024-11-09 10:35:42,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:35:42,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:35:42,292 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:35:42,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:35:42,293 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-09 10:35:42,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:35:42,293 INFO L85 PathProgramCache]: Analyzing trace with hash 515117306, now seen corresponding path program 1 times [2024-11-09 10:35:42,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:35:42,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083763223] [2024-11-09 10:35:42,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:35:42,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:35:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:35:42,375 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 10:35:42,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:35:42,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083763223] [2024-11-09 10:35:42,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083763223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:35:42,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:35:42,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:35:42,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898106237] [2024-11-09 10:35:42,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:35:42,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:35:42,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:35:42,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:35:42,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:35:42,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-11-09 10:35:42,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:35:42,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:35:42,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-11-09 10:35:42,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:35:43,595 INFO L124 PetriNetUnfolderBase]: 3961/6222 cut-off events. [2024-11-09 10:35:43,595 INFO L125 PetriNetUnfolderBase]: For 372/372 co-relation queries the response was YES. [2024-11-09 10:35:43,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12184 conditions, 6222 events. 3961/6222 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 41153 event pairs, 1309 based on Foata normal form. 0/5967 useless extension candidates. Maximal degree in co-relation 12176. Up to 4477 conditions per place. [2024-11-09 10:35:43,635 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 41 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-11-09 10:35:43,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 224 flow [2024-11-09 10:35:43,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:35:43,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:35:43,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-11-09 10:35:43,637 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3711340206185567 [2024-11-09 10:35:43,637 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 102 flow. Second operand 3 states and 108 transitions. [2024-11-09 10:35:43,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 224 flow [2024-11-09 10:35:43,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:35:43,639 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 108 flow [2024-11-09 10:35:43,639 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-11-09 10:35:43,640 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -46 predicate places. [2024-11-09 10:35:43,640 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 108 flow [2024-11-09 10:35:43,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:35:43,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:35:43,641 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:35:43,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:35:43,641 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-09 10:35:43,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:35:43,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1106622889, now seen corresponding path program 1 times [2024-11-09 10:35:43,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:35:43,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709770029] [2024-11-09 10:35:43,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:35:43,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:35:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:35:43,742 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 10:35:43,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:35:43,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709770029] [2024-11-09 10:35:43,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709770029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:35:43,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:35:43,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:35:43,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814320070] [2024-11-09 10:35:43,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:35:43,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:35:43,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:35:43,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:35:43,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:35:43,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-11-09 10:35:43,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:35:43,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:35:43,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-11-09 10:35:43,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:35:45,035 INFO L124 PetriNetUnfolderBase]: 3664/5817 cut-off events. [2024-11-09 10:35:45,035 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2024-11-09 10:35:45,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11735 conditions, 5817 events. 3664/5817 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 38438 event pairs, 1165 based on Foata normal form. 0/5778 useless extension candidates. Maximal degree in co-relation 11726. Up to 4071 conditions per place. [2024-11-09 10:35:45,072 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 40 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-11-09 10:35:45,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 222 flow [2024-11-09 10:35:45,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:35:45,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:35:45,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-11-09 10:35:45,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.327319587628866 [2024-11-09 10:35:45,074 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 108 flow. Second operand 4 states and 127 transitions. [2024-11-09 10:35:45,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 222 flow [2024-11-09 10:35:45,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:35:45,077 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 104 flow [2024-11-09 10:35:45,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2024-11-09 10:35:45,078 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -46 predicate places. [2024-11-09 10:35:45,079 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 104 flow [2024-11-09 10:35:45,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:35:45,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:35:45,079 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:35:45,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:35:45,079 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-09 10:35:45,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:35:45,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1106622890, now seen corresponding path program 1 times [2024-11-09 10:35:45,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:35:45,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647866299] [2024-11-09 10:35:45,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:35:45,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:35:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:35:45,385 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 10:35:45,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:35:45,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647866299] [2024-11-09 10:35:45,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647866299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:35:45,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:35:45,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:35:45,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880718378] [2024-11-09 10:35:45,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:35:45,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:35:45,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:35:45,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:35:45,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:35:45,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-11-09 10:35:45,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:35:45,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:35:45,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-11-09 10:35:45,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:35:46,634 INFO L124 PetriNetUnfolderBase]: 3367/5412 cut-off events. [2024-11-09 10:35:46,634 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2024-11-09 10:35:46,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10817 conditions, 5412 events. 3367/5412 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 35711 event pairs, 1021 based on Foata normal form. 108/5481 useless extension candidates. Maximal degree in co-relation 10808. Up to 3666 conditions per place. [2024-11-09 10:35:46,658 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 39 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-11-09 10:35:46,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 216 flow [2024-11-09 10:35:46,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:35:46,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:35:46,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-11-09 10:35:46,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3247422680412371 [2024-11-09 10:35:46,660 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 104 flow. Second operand 4 states and 126 transitions. [2024-11-09 10:35:46,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 216 flow [2024-11-09 10:35:46,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 211 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:35:46,662 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 99 flow [2024-11-09 10:35:46,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2024-11-09 10:35:46,662 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -47 predicate places. [2024-11-09 10:35:46,662 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 99 flow [2024-11-09 10:35:46,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:35:46,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:35:46,663 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:35:46,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:35:46,663 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-09 10:35:46,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:35:46,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1779817010, now seen corresponding path program 1 times [2024-11-09 10:35:46,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:35:46,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653898704] [2024-11-09 10:35:46,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:35:46,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:35:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:35:46,702 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 10:35:46,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:35:46,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653898704] [2024-11-09 10:35:46,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653898704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:35:46,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:35:46,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:35:46,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132536134] [2024-11-09 10:35:46,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:35:46,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:35:46,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:35:46,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:35:46,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:35:46,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 97 [2024-11-09 10:35:46,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:35:46,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:35:46,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 97 [2024-11-09 10:35:46,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:35:47,857 INFO L124 PetriNetUnfolderBase]: 3367/5409 cut-off events. [2024-11-09 10:35:47,857 INFO L125 PetriNetUnfolderBase]: For 312/312 co-relation queries the response was YES. [2024-11-09 10:35:47,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10813 conditions, 5409 events. 3367/5409 cut-off events. For 312/312 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 37009 event pairs, 3367 based on Foata normal form. 144/5415 useless extension candidates. Maximal degree in co-relation 10805. Up to 4646 conditions per place. [2024-11-09 10:35:47,884 INFO L140 encePairwiseOnDemand]: 95/97 looper letters, 23 selfloop transitions, 1 changer transitions 1/41 dead transitions. [2024-11-09 10:35:47,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 41 transitions, 147 flow [2024-11-09 10:35:47,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:35:47,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:35:47,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-11-09 10:35:47,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29553264604810997 [2024-11-09 10:35:47,887 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 99 flow. Second operand 3 states and 86 transitions. [2024-11-09 10:35:47,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 41 transitions, 147 flow [2024-11-09 10:35:47,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 41 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:35:47,889 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 94 flow [2024-11-09 10:35:47,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-11-09 10:35:47,889 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -48 predicate places. [2024-11-09 10:35:47,889 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 94 flow [2024-11-09 10:35:47,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:35:47,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:35:47,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:35:47,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:35:47,890 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-11-09 10:35:47,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:35:47,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1779818351, now seen corresponding path program 1 times [2024-11-09 10:35:47,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:35:47,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438680869] [2024-11-09 10:35:47,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:35:47,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:35:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:35:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:35:48,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:35:48,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438680869] [2024-11-09 10:35:48,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438680869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:35:48,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:35:48,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:35:48,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85699673] [2024-11-09 10:35:48,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:35:48,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:35:48,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:35:48,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:35:48,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:35:48,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 97 [2024-11-09 10:35:48,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:35:48,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:35:48,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 97 [2024-11-09 10:35:48,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand