./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_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 be536b3b382c4e63adbabc11deb06983f35dbd290b78e0d42f1a068990873986 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:22:05,970 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:22:06,037 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:22:06,042 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:22:06,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:22:06,073 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:22:06,074 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:22:06,075 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:22:06,075 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:22:06,076 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:22:06,076 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:22:06,076 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:22:06,077 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:22:06,081 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:22:06,081 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:22:06,082 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:22:06,082 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:22:06,082 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:22:06,083 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:22:06,083 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:22:06,083 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:22:06,087 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:22:06,088 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:22:06,088 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:22:06,088 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:22:06,088 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:22:06,089 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:22:06,089 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:22:06,089 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:22:06,090 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:22:06,090 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:22:06,090 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:22:06,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:22:06,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:22:06,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:22:06,094 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:22:06,094 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:22:06,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:22:06,094 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:22:06,095 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:22:06,095 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:22:06,096 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:22:06,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be536b3b382c4e63adbabc11deb06983f35dbd290b78e0d42f1a068990873986 [2024-10-13 12:22:06,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:22:06,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:22:06,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:22:06,400 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:22:06,401 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:22:06,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_power.opt.i [2024-10-13 12:22:08,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:22:08,802 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:22:08,802 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_power.opt.i [2024-10-13 12:22:08,840 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f0f0c725/f361257a3b774191b4c103d32d6804ab/FLAG05311afcf [2024-10-13 12:22:08,869 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f0f0c725/f361257a3b774191b4c103d32d6804ab [2024-10-13 12:22:08,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:22:08,877 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:22:08,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:22:08,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:22:08,898 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:22:08,903 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:22:08" (1/1) ... [2024-10-13 12:22:08,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a335955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:22:08, skipping insertion in model container [2024-10-13 12:22:08,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:22:08" (1/1) ... [2024-10-13 12:22:09,000 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:22:09,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:22:09,968 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:22:10,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:22:10,082 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:22:10,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:22:10 WrapperNode [2024-10-13 12:22:10,083 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:22:10,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:22:10,085 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:22:10,085 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:22:10,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:22:10" (1/1) ... [2024-10-13 12:22:10,119 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:22:10" (1/1) ... [2024-10-13 12:22:10,143 INFO L138 Inliner]: procedures = 175, calls = 60, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 172 [2024-10-13 12:22:10,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:22:10,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:22:10,145 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:22:10,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:22:10,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:22:10" (1/1) ... [2024-10-13 12:22:10,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:22:10" (1/1) ... [2024-10-13 12:22:10,160 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:22:10" (1/1) ... [2024-10-13 12:22:10,179 INFO L175 MemorySlicer]: Split 20 memory accesses to 2 slices as follows [2, 18]. 90 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 6 writes are split as follows [0, 6]. [2024-10-13 12:22:10,180 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:22:10" (1/1) ... [2024-10-13 12:22:10,180 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:22:10" (1/1) ... [2024-10-13 12:22:10,189 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:22:10" (1/1) ... [2024-10-13 12:22:10,191 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:22:10" (1/1) ... [2024-10-13 12:22:10,194 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:22:10" (1/1) ... [2024-10-13 12:22:10,195 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:22:10" (1/1) ... [2024-10-13 12:22:10,199 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:22:10,200 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:22:10,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:22:10,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:22:10,202 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:22:10" (1/1) ... [2024-10-13 12:22:10,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:22:10,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:22:10,249 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) [2024-10-13 12:22:10,252 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 [2024-10-13 12:22:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 12:22:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 12:22:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 12:22:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 12:22:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 12:22:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:22:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-13 12:22:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-13 12:22:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-13 12:22:10,304 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-13 12:22:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-13 12:22:10,305 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-13 12:22:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:22:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 12:22:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 12:22:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:22:10,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:22:10,309 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:22:10,458 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:22:10,461 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:22:11,008 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:22:11,009 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:22:12,099 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:22:12,105 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 12:22:12,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:22:12 BoogieIcfgContainer [2024-10-13 12:22:12,106 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:22:12,114 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:22:12,114 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:22:12,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:22:12,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:22:08" (1/3) ... [2024-10-13 12:22:12,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb163ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:22:12, skipping insertion in model container [2024-10-13 12:22:12,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:22:10" (2/3) ... [2024-10-13 12:22:12,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb163ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:22:12, skipping insertion in model container [2024-10-13 12:22:12,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:22:12" (3/3) ... [2024-10-13 12:22:12,131 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_power.opt.i [2024-10-13 12:22:12,166 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:22:12,173 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2024-10-13 12:22:12,174 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:22:12,460 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 12:22:12,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 77 transitions, 166 flow [2024-10-13 12:22:12,553 INFO L124 PetriNetUnfolderBase]: 2/74 cut-off events. [2024-10-13 12:22:12,553 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:22:12,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 2/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 296 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2024-10-13 12:22:12,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 77 transitions, 166 flow [2024-10-13 12:22:12,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 74 transitions, 157 flow [2024-10-13 12:22:12,582 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:22:12,591 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;@1fb5aeb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:22:12,593 INFO L334 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2024-10-13 12:22:12,599 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:22:12,600 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-10-13 12:22:12,601 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:22:12,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:22:12,602 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 12:22:12,602 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-13 12:22:12,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:22:12,609 INFO L85 PathProgramCache]: Analyzing trace with hash 857407823, now seen corresponding path program 1 times [2024-10-13 12:22:12,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:22:12,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419487597] [2024-10-13 12:22:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:22:12,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:22:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:22:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:22:13,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:22:13,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419487597] [2024-10-13 12:22:13,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419487597] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:22:13,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:22:13,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:22:13,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853952284] [2024-10-13 12:22:13,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:22:13,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:22:13,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:22:13,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:22:13,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:22:13,101 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 77 [2024-10-13 12:22:13,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-10-13 12:22:13,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:22:13,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 77 [2024-10-13 12:22:13,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:22:20,238 INFO L124 PetriNetUnfolderBase]: 21849/31883 cut-off events. [2024-10-13 12:22:20,239 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-13 12:22:20,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62492 conditions, 31883 events. 21849/31883 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 2956. Compared 272267 event pairs, 1794 based on Foata normal form. 1120/15395 useless extension candidates. Maximal degree in co-relation 62481. Up to 27560 conditions per place. [2024-10-13 12:22:20,570 INFO L140 encePairwiseOnDemand]: 58/77 looper letters, 73 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-10-13 12:22:20,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 89 transitions, 343 flow [2024-10-13 12:22:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:22:20,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:22:20,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2024-10-13 12:22:20,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6883116883116883 [2024-10-13 12:22:20,588 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 157 flow. Second operand 3 states and 159 transitions. [2024-10-13 12:22:20,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 89 transitions, 343 flow [2024-10-13 12:22:20,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 89 transitions, 338 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:22:20,602 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 122 flow [2024-10-13 12:22:20,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-10-13 12:22:20,609 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -17 predicate places. [2024-10-13 12:22:20,609 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 122 flow [2024-10-13 12:22:20,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-10-13 12:22:20,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:22:20,610 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 12:22:20,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:22:20,611 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-13 12:22:20,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:22:20,612 INFO L85 PathProgramCache]: Analyzing trace with hash 809839665, now seen corresponding path program 1 times [2024-10-13 12:22:20,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:22:20,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77064543] [2024-10-13 12:22:20,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:22:20,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:22:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:22:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:22:20,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:22:20,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77064543] [2024-10-13 12:22:20,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77064543] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:22:20,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:22:20,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:22:20,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72483974] [2024-10-13 12:22:20,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:22:20,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:22:20,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:22:20,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:22:20,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:22:20,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 77 [2024-10-13 12:22:20,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-10-13 12:22:20,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:22:20,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 77 [2024-10-13 12:22:20,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:22:29,130 INFO L124 PetriNetUnfolderBase]: 28799/42822 cut-off events. [2024-10-13 12:22:29,130 INFO L125 PetriNetUnfolderBase]: For 1072/1072 co-relation queries the response was YES. [2024-10-13 12:22:29,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84129 conditions, 42822 events. 28799/42822 cut-off events. For 1072/1072 co-relation queries the response was YES. Maximal size of possible extension queue 4039. Compared 363538 event pairs, 17264 based on Foata normal form. 0/19474 useless extension candidates. Maximal degree in co-relation 84119. Up to 29519 conditions per place. [2024-10-13 12:22:29,711 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 72 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2024-10-13 12:22:29,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 92 transitions, 354 flow [2024-10-13 12:22:29,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:22:29,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:22:29,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-10-13 12:22:29,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5670995670995671 [2024-10-13 12:22:29,718 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 122 flow. Second operand 3 states and 131 transitions. [2024-10-13 12:22:29,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 92 transitions, 354 flow [2024-10-13 12:22:29,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 92 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:22:29,722 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 160 flow [2024-10-13 12:22:29,722 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2024-10-13 12:22:29,723 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -16 predicate places. [2024-10-13 12:22:29,724 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 160 flow [2024-10-13 12:22:29,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-10-13 12:22:29,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:22:29,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 12:22:29,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 12:22:29,726 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-13 12:22:29,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:22:29,726 INFO L85 PathProgramCache]: Analyzing trace with hash 809839667, now seen corresponding path program 1 times [2024-10-13 12:22:29,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:22:29,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347198950] [2024-10-13 12:22:29,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:22:29,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:22:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:22:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:22:29,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:22:29,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347198950] [2024-10-13 12:22:29,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347198950] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:22:29,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:22:29,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:22:29,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16913497] [2024-10-13 12:22:29,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:22:29,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:22:29,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:22:29,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:22:29,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:22:29,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 77 [2024-10-13 12:22:29,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-10-13 12:22:29,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:22:29,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 77 [2024-10-13 12:22:29,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:22:32,731 INFO L124 PetriNetUnfolderBase]: 8846/14022 cut-off events. [2024-10-13 12:22:32,731 INFO L125 PetriNetUnfolderBase]: For 3708/3738 co-relation queries the response was YES. [2024-10-13 12:22:32,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31429 conditions, 14022 events. 8846/14022 cut-off events. For 3708/3738 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 112311 event pairs, 7890 based on Foata normal form. 0/11373 useless extension candidates. Maximal degree in co-relation 31419. Up to 12507 conditions per place. [2024-10-13 12:22:32,861 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 37 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2024-10-13 12:22:32,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 216 flow [2024-10-13 12:22:32,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:22:32,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:22:32,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-10-13 12:22:32,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-10-13 12:22:32,865 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 160 flow. Second operand 3 states and 93 transitions. [2024-10-13 12:22:32,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 216 flow [2024-10-13 12:22:32,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:22:32,867 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 136 flow [2024-10-13 12:22:32,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-10-13 12:22:32,868 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -24 predicate places. [2024-10-13 12:22:32,868 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 136 flow [2024-10-13 12:22:32,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-10-13 12:22:32,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:22:32,869 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 12:22:32,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 12:22:32,870 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting P0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-13 12:22:32,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:22:32,871 INFO L85 PathProgramCache]: Analyzing trace with hash 809839668, now seen corresponding path program 1 times [2024-10-13 12:22:32,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:22:32,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308751215] [2024-10-13 12:22:32,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:22:32,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:22:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:22:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:22:33,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:22:33,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308751215] [2024-10-13 12:22:33,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308751215] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:22:33,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:22:33,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:22:33,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823677146] [2024-10-13 12:22:33,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:22:33,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:22:33,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:22:33,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:22:33,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:22:33,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 77 [2024-10-13 12:22:33,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-10-13 12:22:33,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:22:33,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 77 [2024-10-13 12:22:33,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:22:33,549 INFO L124 PetriNetUnfolderBase]: 1459/2535 cut-off events. [2024-10-13 12:22:33,550 INFO L125 PetriNetUnfolderBase]: For 859/865 co-relation queries the response was YES. [2024-10-13 12:22:33,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5791 conditions, 2535 events. 1459/2535 cut-off events. For 859/865 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 16627 event pairs, 1209 based on Foata normal form. 873/3245 useless extension candidates. Maximal degree in co-relation 5784. Up to 2163 conditions per place. [2024-10-13 12:22:33,566 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 27 selfloop transitions, 1 changer transitions 1/43 dead transitions. [2024-10-13 12:22:33,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 174 flow [2024-10-13 12:22:33,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:22:33,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:22:33,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-10-13 12:22:33,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-10-13 12:22:33,568 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 136 flow. Second operand 3 states and 84 transitions. [2024-10-13 12:22:33,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 174 flow [2024-10-13 12:22:33,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 43 transitions, 173 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:22:33,570 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 115 flow [2024-10-13 12:22:33,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-10-13 12:22:33,571 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -32 predicate places. [2024-10-13 12:22:33,571 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 115 flow [2024-10-13 12:22:33,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-10-13 12:22:33,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:22:33,572 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:22:33,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 12:22:33,572 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-13 12:22:33,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:22:33,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1121178972, now seen corresponding path program 1 times [2024-10-13 12:22:33,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:22:33,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164044977] [2024-10-13 12:22:33,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:22:33,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:22:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:22:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:22:33,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:22:33,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164044977] [2024-10-13 12:22:33,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164044977] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:22:33,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:22:33,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:22:33,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911735239] [2024-10-13 12:22:33,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:22:33,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:22:33,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:22:33,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:22:33,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:22:33,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 77 [2024-10-13 12:22:33,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-10-13 12:22:33,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:22:33,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 77 [2024-10-13 12:22:33,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:22:34,103 INFO L124 PetriNetUnfolderBase]: 1252/2140 cut-off events. [2024-10-13 12:22:34,103 INFO L125 PetriNetUnfolderBase]: For 504/516 co-relation queries the response was YES. [2024-10-13 12:22:34,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4956 conditions, 2140 events. 1252/2140 cut-off events. For 504/516 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 12785 event pairs, 432 based on Foata normal form. 2/2040 useless extension candidates. Maximal degree in co-relation 4948. Up to 1565 conditions per place. [2024-10-13 12:22:34,115 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 42 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2024-10-13 12:22:34,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 59 transitions, 255 flow [2024-10-13 12:22:34,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:22:34,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:22:34,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-10-13 12:22:34,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-10-13 12:22:34,117 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 115 flow. Second operand 3 states and 90 transitions. [2024-10-13 12:22:34,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 59 transitions, 255 flow [2024-10-13 12:22:34,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:22:34,120 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 127 flow [2024-10-13 12:22:34,120 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-10-13 12:22:34,121 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -31 predicate places. [2024-10-13 12:22:34,121 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 127 flow [2024-10-13 12:22:34,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-10-13 12:22:34,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:22:34,121 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:22:34,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 12:22:34,122 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-13 12:22:34,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:22:34,122 INFO L85 PathProgramCache]: Analyzing trace with hash -583739029, now seen corresponding path program 1 times [2024-10-13 12:22:34,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:22:34,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110658983] [2024-10-13 12:22:34,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:22:34,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:22:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:22:34,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:22:34,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:22:34,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110658983] [2024-10-13 12:22:34,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110658983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:22:34,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:22:34,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:22:34,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337880609] [2024-10-13 12:22:34,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:22:34,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:22:34,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:22:34,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:22:34,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:22:34,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 77 [2024-10-13 12:22:34,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2024-10-13 12:22:34,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:22:34,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 77 [2024-10-13 12:22:34,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:22:34,645 INFO L124 PetriNetUnfolderBase]: 1156/1999 cut-off events. [2024-10-13 12:22:34,646 INFO L125 PetriNetUnfolderBase]: For 716/728 co-relation queries the response was YES. [2024-10-13 12:22:34,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4914 conditions, 1999 events. 1156/1999 cut-off events. For 716/728 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11851 event pairs, 369 based on Foata normal form. 2/1989 useless extension candidates. Maximal degree in co-relation 4904. Up to 1423 conditions per place. [2024-10-13 12:22:34,661 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 41 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-10-13 12:22:34,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 261 flow [2024-10-13 12:22:34,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:22:34,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:22:34,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-10-13 12:22:34,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-10-13 12:22:34,663 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 127 flow. Second operand 4 states and 105 transitions. [2024-10-13 12:22:34,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 261 flow [2024-10-13 12:22:34,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:22:34,666 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 123 flow [2024-10-13 12:22:34,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-10-13 12:22:34,667 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -31 predicate places. [2024-10-13 12:22:34,667 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 123 flow [2024-10-13 12:22:34,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2024-10-13 12:22:34,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:22:34,667 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:22:34,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 12:22:34,668 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-13 12:22:34,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:22:34,668 INFO L85 PathProgramCache]: Analyzing trace with hash -583739028, now seen corresponding path program 1 times [2024-10-13 12:22:34,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:22:34,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125136241] [2024-10-13 12:22:34,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:22:34,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:22:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:22:34,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:22:34,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:22:34,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125136241] [2024-10-13 12:22:34,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125136241] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:22:34,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:22:34,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:22:34,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764657698] [2024-10-13 12:22:34,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:22:34,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:22:34,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:22:34,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:22:34,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:22:34,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 77 [2024-10-13 12:22:34,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2024-10-13 12:22:34,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:22:34,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 77 [2024-10-13 12:22:34,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:22:35,311 INFO L124 PetriNetUnfolderBase]: 1060/1887 cut-off events. [2024-10-13 12:22:35,312 INFO L125 PetriNetUnfolderBase]: For 664/676 co-relation queries the response was YES. [2024-10-13 12:22:35,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4559 conditions, 1887 events. 1060/1887 cut-off events. For 664/676 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11599 event pairs, 166 based on Foata normal form. 47/1922 useless extension candidates. Maximal degree in co-relation 4549. Up to 1282 conditions per place. [2024-10-13 12:22:35,327 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 40 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2024-10-13 12:22:35,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 255 flow [2024-10-13 12:22:35,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:22:35,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:22:35,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-10-13 12:22:35,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33766233766233766 [2024-10-13 12:22:35,329 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 123 flow. Second operand 4 states and 104 transitions. [2024-10-13 12:22:35,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 255 flow [2024-10-13 12:22:35,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 248 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:22:35,332 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 118 flow [2024-10-13 12:22:35,332 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2024-10-13 12:22:35,333 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -32 predicate places. [2024-10-13 12:22:35,333 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 118 flow [2024-10-13 12:22:35,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2024-10-13 12:22:35,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:22:35,334 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:22:35,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 12:22:35,334 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-13 12:22:35,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:22:35,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1638524734, now seen corresponding path program 1 times [2024-10-13 12:22:35,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:22:35,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748780798] [2024-10-13 12:22:35,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:22:35,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:22:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:22:35,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:22:35,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:22:35,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748780798] [2024-10-13 12:22:35,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748780798] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:22:35,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:22:35,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:22:35,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719204233] [2024-10-13 12:22:35,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:22:35,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:22:35,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:22:35,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:22:35,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:22:35,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2024-10-13 12:22:35,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-10-13 12:22:35,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:22:35,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2024-10-13 12:22:35,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:22:35,942 INFO L124 PetriNetUnfolderBase]: 1060/1896 cut-off events. [2024-10-13 12:22:35,942 INFO L125 PetriNetUnfolderBase]: For 829/835 co-relation queries the response was YES. [2024-10-13 12:22:35,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4567 conditions, 1896 events. 1060/1896 cut-off events. For 829/835 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11956 event pairs, 876 based on Foata normal form. 60/1913 useless extension candidates. Maximal degree in co-relation 4558. Up to 1584 conditions per place. [2024-10-13 12:22:35,957 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 24 selfloop transitions, 1 changer transitions 1/39 dead transitions. [2024-10-13 12:22:35,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 39 transitions, 168 flow [2024-10-13 12:22:35,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:22:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:22:35,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-10-13 12:22:35,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2024-10-13 12:22:35,958 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 118 flow. Second operand 3 states and 70 transitions. [2024-10-13 12:22:35,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 39 transitions, 168 flow [2024-10-13 12:22:35,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 39 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:22:35,960 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 112 flow [2024-10-13 12:22:35,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-10-13 12:22:35,962 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -33 predicate places. [2024-10-13 12:22:35,962 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 112 flow [2024-10-13 12:22:35,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-10-13 12:22:35,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:22:35,963 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:22:35,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 12:22:35,963 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-13 12:22:35,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:22:35,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1638526077, now seen corresponding path program 1 times [2024-10-13 12:22:35,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:22:35,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901519400] [2024-10-13 12:22:35,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:22:35,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:22:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:22:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:22:36,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:22:36,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901519400] [2024-10-13 12:22:36,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901519400] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:22:36,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:22:36,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:22:36,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486762168] [2024-10-13 12:22:36,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:22:36,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:22:36,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:22:36,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:22:36,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:22:36,150 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-10-13 12:22:36,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-10-13 12:22:36,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:22:36,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-10-13 12:22:36,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:22:37,141 INFO L124 PetriNetUnfolderBase]: 1598/2639 cut-off events. [2024-10-13 12:22:37,141 INFO L125 PetriNetUnfolderBase]: For 749/749 co-relation queries the response was YES. [2024-10-13 12:22:37,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6594 conditions, 2639 events. 1598/2639 cut-off events. For 749/749 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 16435 event pairs, 171 based on Foata normal form. 0/2568 useless extension candidates. Maximal degree in co-relation 6585. Up to 1448 conditions per place. [2024-10-13 12:22:37,158 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 36 selfloop transitions, 2 changer transitions 54/103 dead transitions. [2024-10-13 12:22:37,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 103 transitions, 522 flow [2024-10-13 12:22:37,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:22:37,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:22:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-10-13 12:22:37,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3198051948051948 [2024-10-13 12:22:37,160 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 112 flow. Second operand 8 states and 197 transitions. [2024-10-13 12:22:37,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 103 transitions, 522 flow [2024-10-13 12:22:37,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 103 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:22:37,164 INFO L231 Difference]: Finished difference. Result has 59 places, 37 transitions, 125 flow [2024-10-13 12:22:37,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=125, PETRI_PLACES=59, PETRI_TRANSITIONS=37} [2024-10-13 12:22:37,165 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -23 predicate places. [2024-10-13 12:22:37,165 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 37 transitions, 125 flow [2024-10-13 12:22:37,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-10-13 12:22:37,166 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:22:37,166 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:22:37,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 12:22:37,166 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-13 12:22:37,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:22:37,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1463489412, now seen corresponding path program 1 times [2024-10-13 12:22:37,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:22:37,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554108351] [2024-10-13 12:22:37,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:22:37,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:22:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:22:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:22:37,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:22:37,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554108351] [2024-10-13 12:22:37,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554108351] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:22:37,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:22:37,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:22:37,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097395467] [2024-10-13 12:22:37,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:22:37,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:22:37,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:22:37,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:22:37,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:22:37,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 77 [2024-10-13 12:22:37,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 37 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 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) [2024-10-13 12:22:37,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:22:37,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 77 [2024-10-13 12:22:37,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:22:38,502 INFO L124 PetriNetUnfolderBase]: 2960/4798 cut-off events. [2024-10-13 12:22:38,503 INFO L125 PetriNetUnfolderBase]: For 1709/1712 co-relation queries the response was YES. [2024-10-13 12:22:38,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12536 conditions, 4798 events. 2960/4798 cut-off events. For 1709/1712 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 30022 event pairs, 396 based on Foata normal form. 100/4861 useless extension candidates. Maximal degree in co-relation 12521. Up to 2112 conditions per place. [2024-10-13 12:22:38,538 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 44 selfloop transitions, 4 changer transitions 63/120 dead transitions. [2024-10-13 12:22:38,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 120 transitions, 648 flow [2024-10-13 12:22:38,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:22:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:22:38,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-10-13 12:22:38,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3116883116883117 [2024-10-13 12:22:38,539 INFO L175 Difference]: Start difference. First operand has 59 places, 37 transitions, 125 flow. Second operand 8 states and 192 transitions. [2024-10-13 12:22:38,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 120 transitions, 648 flow [2024-10-13 12:22:38,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 120 transitions, 626 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-10-13 12:22:38,577 INFO L231 Difference]: Finished difference. Result has 60 places, 39 transitions, 155 flow [2024-10-13 12:22:38,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=155, PETRI_PLACES=60, PETRI_TRANSITIONS=39} [2024-10-13 12:22:38,580 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -22 predicate places. [2024-10-13 12:22:38,580 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 39 transitions, 155 flow [2024-10-13 12:22:38,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 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) [2024-10-13 12:22:38,581 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:22:38,581 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:22:38,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 12:22:38,582 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-13 12:22:38,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:22:38,582 INFO L85 PathProgramCache]: Analyzing trace with hash -380854009, now seen corresponding path program 1 times [2024-10-13 12:22:38,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:22:38,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746079444] [2024-10-13 12:22:38,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:22:38,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:22:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:22:38,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:22:38,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:22:38,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746079444] [2024-10-13 12:22:38,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746079444] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:22:38,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:22:38,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:22:38,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229005373] [2024-10-13 12:22:38,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:22:38,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:22:38,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:22:38,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:22:38,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:22:38,897 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2024-10-13 12:22:38,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 39 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2024-10-13 12:22:38,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:22:38,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2024-10-13 12:22:38,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:22:39,702 INFO L124 PetriNetUnfolderBase]: 1378/2418 cut-off events. [2024-10-13 12:22:39,703 INFO L125 PetriNetUnfolderBase]: For 2020/2067 co-relation queries the response was YES. [2024-10-13 12:22:39,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6738 conditions, 2418 events. 1378/2418 cut-off events. For 2020/2067 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 15253 event pairs, 607 based on Foata normal form. 75/2430 useless extension candidates. Maximal degree in co-relation 6721. Up to 1475 conditions per place. [2024-10-13 12:22:39,722 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 35 selfloop transitions, 3 changer transitions 41/93 dead transitions. [2024-10-13 12:22:39,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 515 flow [2024-10-13 12:22:39,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:22:39,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:22:39,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-10-13 12:22:39,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3209647495361781 [2024-10-13 12:22:39,724 INFO L175 Difference]: Start difference. First operand has 60 places, 39 transitions, 155 flow. Second operand 7 states and 173 transitions. [2024-10-13 12:22:39,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 515 flow [2024-10-13 12:22:39,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 93 transitions, 498 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-10-13 12:22:39,732 INFO L231 Difference]: Finished difference. Result has 63 places, 39 transitions, 163 flow [2024-10-13 12:22:39,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=163, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2024-10-13 12:22:39,733 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -19 predicate places. [2024-10-13 12:22:39,734 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 163 flow [2024-10-13 12:22:39,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2024-10-13 12:22:39,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:22:39,734 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:22:39,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 12:22:39,734 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-13 12:22:39,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:22:39,735 INFO L85 PathProgramCache]: Analyzing trace with hash -489755317, now seen corresponding path program 1 times [2024-10-13 12:22:39,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:22:39,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946307587] [2024-10-13 12:22:39,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:22:39,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:22:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:22:40,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:22:40,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:22:40,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946307587] [2024-10-13 12:22:40,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946307587] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:22:40,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:22:40,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:22:40,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593802502] [2024-10-13 12:22:40,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:22:40,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:22:40,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:22:40,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:22:40,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:22:40,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 77 [2024-10-13 12:22:40,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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) [2024-10-13 12:22:40,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:22:40,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 77 [2024-10-13 12:22:40,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:22:41,690 INFO L124 PetriNetUnfolderBase]: 3308/5407 cut-off events. [2024-10-13 12:22:41,690 INFO L125 PetriNetUnfolderBase]: For 5203/5203 co-relation queries the response was YES. [2024-10-13 12:22:41,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15437 conditions, 5407 events. 3308/5407 cut-off events. For 5203/5203 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 36355 event pairs, 697 based on Foata normal form. 150/5549 useless extension candidates. Maximal degree in co-relation 15417. Up to 1897 conditions per place. [2024-10-13 12:22:41,730 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 44 selfloop transitions, 3 changer transitions 101/157 dead transitions. [2024-10-13 12:22:41,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 157 transitions, 905 flow [2024-10-13 12:22:41,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 12:22:41,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 12:22:41,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 258 transitions. [2024-10-13 12:22:41,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30460448642266824 [2024-10-13 12:22:41,732 INFO L175 Difference]: Start difference. First operand has 63 places, 39 transitions, 163 flow. Second operand 11 states and 258 transitions. [2024-10-13 12:22:41,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 157 transitions, 905 flow [2024-10-13 12:22:41,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 157 transitions, 863 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-10-13 12:22:41,771 INFO L231 Difference]: Finished difference. Result has 72 places, 39 transitions, 176 flow [2024-10-13 12:22:41,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=176, PETRI_PLACES=72, PETRI_TRANSITIONS=39} [2024-10-13 12:22:41,771 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -10 predicate places. [2024-10-13 12:22:41,772 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 39 transitions, 176 flow [2024-10-13 12:22:41,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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) [2024-10-13 12:22:41,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:22:41,772 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:22:41,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 12:22:41,773 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-13 12:22:41,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:22:41,773 INFO L85 PathProgramCache]: Analyzing trace with hash 830112780, now seen corresponding path program 1 times [2024-10-13 12:22:41,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:22:41,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149135058] [2024-10-13 12:22:41,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:22:41,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:22:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:22:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:22:42,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:22:42,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149135058] [2024-10-13 12:22:42,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149135058] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:22:42,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:22:42,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:22:42,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123054850] [2024-10-13 12:22:42,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:22:42,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 12:22:42,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:22:42,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 12:22:42,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:22:42,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2024-10-13 12:22:42,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 39 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 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) [2024-10-13 12:22:42,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:22:42,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2024-10-13 12:22:42,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:22:43,799 INFO L124 PetriNetUnfolderBase]: 1695/3056 cut-off events. [2024-10-13 12:22:43,800 INFO L125 PetriNetUnfolderBase]: For 5671/5768 co-relation queries the response was YES. [2024-10-13 12:22:43,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8907 conditions, 3056 events. 1695/3056 cut-off events. For 5671/5768 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 20691 event pairs, 695 based on Foata normal form. 105/3111 useless extension candidates. Maximal degree in co-relation 8883. Up to 2030 conditions per place. [2024-10-13 12:22:43,824 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 37 selfloop transitions, 13 changer transitions 43/107 dead transitions. [2024-10-13 12:22:43,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 107 transitions, 647 flow [2024-10-13 12:22:43,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 12:22:43,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 12:22:43,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 252 transitions. [2024-10-13 12:22:43,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2975206611570248 [2024-10-13 12:22:43,828 INFO L175 Difference]: Start difference. First operand has 72 places, 39 transitions, 176 flow. Second operand 11 states and 252 transitions. [2024-10-13 12:22:43,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 107 transitions, 647 flow [2024-10-13 12:22:43,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 107 transitions, 598 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-10-13 12:22:43,849 INFO L231 Difference]: Finished difference. Result has 74 places, 51 transitions, 293 flow [2024-10-13 12:22:43,849 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=293, PETRI_PLACES=74, PETRI_TRANSITIONS=51} [2024-10-13 12:22:43,849 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2024-10-13 12:22:43,850 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 51 transitions, 293 flow [2024-10-13 12:22:43,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 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) [2024-10-13 12:22:43,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:22:43,851 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:22:43,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 12:22:43,851 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-13 12:22:43,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:22:43,852 INFO L85 PathProgramCache]: Analyzing trace with hash 878269870, now seen corresponding path program 1 times [2024-10-13 12:22:43,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:22:43,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339046476] [2024-10-13 12:22:43,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:22:43,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:22:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:22:45,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:22:45,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:22:45,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339046476] [2024-10-13 12:22:45,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339046476] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:22:45,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:22:45,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 12:22:45,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356586820] [2024-10-13 12:22:45,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:22:45,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 12:22:45,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:22:45,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 12:22:45,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-13 12:22:45,978 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2024-10-13 12:22:45,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 51 transitions, 293 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2024-10-13 12:22:45,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:22:45,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2024-10-13 12:22:45,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:22:47,081 INFO L124 PetriNetUnfolderBase]: 1398/2515 cut-off events. [2024-10-13 12:22:47,081 INFO L125 PetriNetUnfolderBase]: For 6246/6501 co-relation queries the response was YES. [2024-10-13 12:22:47,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8717 conditions, 2515 events. 1398/2515 cut-off events. For 6246/6501 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16086 event pairs, 240 based on Foata normal form. 77/2565 useless extension candidates. Maximal degree in co-relation 8691. Up to 1374 conditions per place. [2024-10-13 12:22:47,103 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 45 selfloop transitions, 14 changer transitions 37/110 dead transitions. [2024-10-13 12:22:47,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 110 transitions, 798 flow [2024-10-13 12:22:47,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 12:22:47,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 12:22:47,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions. [2024-10-13 12:22:47,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3069657615112161 [2024-10-13 12:22:47,106 INFO L175 Difference]: Start difference. First operand has 74 places, 51 transitions, 293 flow. Second operand 11 states and 260 transitions. [2024-10-13 12:22:47,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 110 transitions, 798 flow [2024-10-13 12:22:47,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 110 transitions, 756 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-10-13 12:22:47,126 INFO L231 Difference]: Finished difference. Result has 83 places, 56 transitions, 392 flow [2024-10-13 12:22:47,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=392, PETRI_PLACES=83, PETRI_TRANSITIONS=56} [2024-10-13 12:22:47,127 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 1 predicate places. [2024-10-13 12:22:47,127 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 56 transitions, 392 flow [2024-10-13 12:22:47,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2024-10-13 12:22:47,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:22:47,128 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:22:47,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 12:22:47,128 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-13 12:22:47,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:22:47,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1342377796, now seen corresponding path program 1 times [2024-10-13 12:22:47,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:22:47,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910513669] [2024-10-13 12:22:47,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:22:47,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:22:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:22:47,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:22:47,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:22:47,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910513669] [2024-10-13 12:22:47,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910513669] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:22:47,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:22:47,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:22:47,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651004680] [2024-10-13 12:22:47,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:22:47,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:22:47,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:22:47,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:22:47,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:22:47,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 77 [2024-10-13 12:22:47,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 56 transitions, 392 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-10-13 12:22:47,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:22:47,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 77 [2024-10-13 12:22:47,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:22:48,167 INFO L124 PetriNetUnfolderBase]: 3068/4913 cut-off events. [2024-10-13 12:22:48,167 INFO L125 PetriNetUnfolderBase]: For 12585/12671 co-relation queries the response was YES. [2024-10-13 12:22:48,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16665 conditions, 4913 events. 3068/4913 cut-off events. For 12585/12671 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 28832 event pairs, 362 based on Foata normal form. 226/5098 useless extension candidates. Maximal degree in co-relation 16632. Up to 2766 conditions per place. [2024-10-13 12:22:48,208 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 74 selfloop transitions, 5 changer transitions 1/90 dead transitions. [2024-10-13 12:22:48,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 90 transitions, 797 flow [2024-10-13 12:22:48,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:22:48,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:22:48,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-10-13 12:22:48,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32792207792207795 [2024-10-13 12:22:48,210 INFO L175 Difference]: Start difference. First operand has 83 places, 56 transitions, 392 flow. Second operand 4 states and 101 transitions. [2024-10-13 12:22:48,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 90 transitions, 797 flow [2024-10-13 12:22:48,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 90 transitions, 705 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-10-13 12:22:48,242 INFO L231 Difference]: Finished difference. Result has 74 places, 56 transitions, 349 flow [2024-10-13 12:22:48,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=349, PETRI_PLACES=74, PETRI_TRANSITIONS=56} [2024-10-13 12:22:48,243 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2024-10-13 12:22:48,243 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 56 transitions, 349 flow [2024-10-13 12:22:48,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-10-13 12:22:48,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:22:48,243 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:22:48,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 12:22:48,244 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-10-13 12:22:48,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:22:48,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1571845591, now seen corresponding path program 1 times [2024-10-13 12:22:48,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:22:48,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050320859] [2024-10-13 12:22:48,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:22:48,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms