./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/safe019_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/safe019_power.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:23:41,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:23:41,482 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:23:41,488 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:23:41,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:23:41,516 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:23:41,516 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:23:41,517 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:23:41,517 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:23:41,518 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:23:41,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:23:41,519 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:23:41,519 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:23:41,520 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:23:41,520 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:23:41,521 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:23:41,521 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:23:41,522 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:23:41,522 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:23:41,522 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:23:41,522 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:23:41,529 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:23:41,529 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:23:41,529 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:23:41,530 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:23:41,530 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:23:41,530 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:23:41,530 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:23:41,531 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:23:41,531 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:23:41,531 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:23:41,531 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:23:41,532 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:23:41,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:23:41,534 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:23:41,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:23:41,534 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:23:41,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:23:41,535 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:23:41,536 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:23:41,536 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:23:41,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:23:41,537 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 [2024-10-13 12:23:41,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:23:41,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:23:41,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:23:41,887 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:23:41,887 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:23:41,888 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_power.opt.i [2024-10-13 12:23:43,475 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:23:43,731 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:23:43,732 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_power.opt.i [2024-10-13 12:23:43,754 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94ca42c6e/fe504eeb543b4279a39dbcba7db073ca/FLAG5751ccc21 [2024-10-13 12:23:44,043 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94ca42c6e/fe504eeb543b4279a39dbcba7db073ca [2024-10-13 12:23:44,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:23:44,047 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:23:44,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:23:44,049 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:23:44,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:23:44,055 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:23:44" (1/1) ... [2024-10-13 12:23:44,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b4a7144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:23:44, skipping insertion in model container [2024-10-13 12:23:44,057 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:23:44" (1/1) ... [2024-10-13 12:23:44,117 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:23:44,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:23:44,650 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:23:44,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:23:44,810 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:23:44,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:23:44 WrapperNode [2024-10-13 12:23:44,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:23:44,813 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:23:44,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:23:44,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:23:44,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:23:44" (1/1) ... [2024-10-13 12:23:44,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:23:44" (1/1) ... [2024-10-13 12:23:44,898 INFO L138 Inliner]: procedures = 176, calls = 73, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 182 [2024-10-13 12:23:44,899 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:23:44,899 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:23:44,900 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:23:44,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:23:44,916 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:23:44" (1/1) ... [2024-10-13 12:23:44,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:23:44" (1/1) ... [2024-10-13 12:23:44,927 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:23:44" (1/1) ... [2024-10-13 12:23:44,961 INFO L175 MemorySlicer]: Split 26 memory accesses to 2 slices as follows [2, 24]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 8 writes are split as follows [0, 8]. [2024-10-13 12:23:44,962 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:23:44" (1/1) ... [2024-10-13 12:23:44,962 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:23:44" (1/1) ... [2024-10-13 12:23:44,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:23:44" (1/1) ... [2024-10-13 12:23:44,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:23:44" (1/1) ... [2024-10-13 12:23:44,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:23:44" (1/1) ... [2024-10-13 12:23:45,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:23:44" (1/1) ... [2024-10-13 12:23:45,005 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:23:45,007 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:23:45,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:23:45,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:23:45,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:23:44" (1/1) ... [2024-10-13 12:23:45,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:23:45,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:23:45,047 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 12:23:45,050 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 12:23:45,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 12:23:45,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 12:23:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 12:23:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 12:23:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 12:23:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:23:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-13 12:23:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-13 12:23:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-13 12:23:45,090 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-13 12:23:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-13 12:23:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-13 12:23:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-13 12:23:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-13 12:23:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:23:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 12:23:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 12:23:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:23:45,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:23:45,095 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 12:23:45,278 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:23:45,281 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:23:45,869 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:23:45,869 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:23:46,528 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:23:46,528 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 12:23:46,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:23:46 BoogieIcfgContainer [2024-10-13 12:23:46,529 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:23:46,531 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:23:46,532 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:23:46,535 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:23:46,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:23:44" (1/3) ... [2024-10-13 12:23:46,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f23ebc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:23:46, skipping insertion in model container [2024-10-13 12:23:46,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:23:44" (2/3) ... [2024-10-13 12:23:46,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f23ebc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:23:46, skipping insertion in model container [2024-10-13 12:23:46,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:23:46" (3/3) ... [2024-10-13 12:23:46,539 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_power.opt.i [2024-10-13 12:23:46,557 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:23:46,557 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2024-10-13 12:23:46,557 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:23:46,784 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 12:23:46,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 97 transitions, 210 flow [2024-10-13 12:23:46,897 INFO L124 PetriNetUnfolderBase]: 2/93 cut-off events. [2024-10-13 12:23:46,898 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:23:46,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 391 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2024-10-13 12:23:46,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 97 transitions, 210 flow [2024-10-13 12:23:46,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 93 transitions, 198 flow [2024-10-13 12:23:46,927 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:23:46,937 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;@399f7e19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:23:46,937 INFO L334 AbstractCegarLoop]: Starting to check reachability of 94 error locations. [2024-10-13 12:23:46,945 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:23:46,945 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-10-13 12:23:46,945 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:23:46,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:23:46,946 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 12:23:46,947 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:23:46,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:23:46,954 INFO L85 PathProgramCache]: Analyzing trace with hash 975322582, now seen corresponding path program 1 times [2024-10-13 12:23:46,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:23:46,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641257339] [2024-10-13 12:23:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:23:46,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:23:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:23:47,358 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 12:23:47,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:23:47,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641257339] [2024-10-13 12:23:47,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641257339] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:23:47,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:23:47,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:23:47,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370438064] [2024-10-13 12:23:47,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:23:47,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:23:47,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:23:47,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:23:47,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:23:47,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-10-13 12:23:47,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 93 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:23:47,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:23:47,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-10-13 12:23:47,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:23:58,449 INFO L124 PetriNetUnfolderBase]: 41670/60435 cut-off events. [2024-10-13 12:23:58,450 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-13 12:23:58,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115766 conditions, 60435 events. 41670/60435 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3712. Compared 492540 event pairs, 41670 based on Foata normal form. 1960/38305 useless extension candidates. Maximal degree in co-relation 115754. Up to 54867 conditions per place. [2024-10-13 12:23:59,076 INFO L140 encePairwiseOnDemand]: 60/97 looper letters, 38 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2024-10-13 12:23:59,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 56 transitions, 202 flow [2024-10-13 12:23:59,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:23:59,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:23:59,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-10-13 12:23:59,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4742268041237113 [2024-10-13 12:23:59,094 INFO L175 Difference]: Start difference. First operand has 104 places, 93 transitions, 198 flow. Second operand 3 states and 138 transitions. [2024-10-13 12:23:59,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 56 transitions, 202 flow [2024-10-13 12:23:59,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 56 transitions, 198 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 12:23:59,133 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 122 flow [2024-10-13 12:23:59,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-10-13 12:23:59,139 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -37 predicate places. [2024-10-13 12:23:59,142 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 122 flow [2024-10-13 12:23:59,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:23:59,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:23:59,143 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 12:23:59,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:23:59,144 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:23:59,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:23:59,145 INFO L85 PathProgramCache]: Analyzing trace with hash 975322583, now seen corresponding path program 1 times [2024-10-13 12:23:59,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:23:59,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68979031] [2024-10-13 12:23:59,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:23:59,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:23:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:23:59,519 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 12:23:59,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:23:59,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68979031] [2024-10-13 12:23:59,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68979031] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:23:59,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:23:59,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:23:59,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438871575] [2024-10-13 12:23:59,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:23:59,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:23:59,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:23:59,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:23:59,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:23:59,527 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-10-13 12:23:59,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:23:59,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:23:59,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-10-13 12:23:59,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:24:01,305 INFO L124 PetriNetUnfolderBase]: 5844/9113 cut-off events. [2024-10-13 12:24:01,305 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:24:01,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17256 conditions, 9113 events. 5844/9113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 65049 event pairs, 5844 based on Foata normal form. 0/8156 useless extension candidates. Maximal degree in co-relation 17250. Up to 7981 conditions per place. [2024-10-13 12:24:01,554 INFO L140 encePairwiseOnDemand]: 86/97 looper letters, 28 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2024-10-13 12:24:01,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 46 transitions, 160 flow [2024-10-13 12:24:01,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:24:01,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:24:01,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-10-13 12:24:01,557 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35051546391752575 [2024-10-13 12:24:01,557 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 122 flow. Second operand 3 states and 102 transitions. [2024-10-13 12:24:01,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 46 transitions, 160 flow [2024-10-13 12:24:01,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 46 transitions, 159 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:24:01,559 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 103 flow [2024-10-13 12:24:01,560 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2024-10-13 12:24:01,561 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -46 predicate places. [2024-10-13 12:24:01,561 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 103 flow [2024-10-13 12:24:01,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:24:01,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:24:01,562 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 12:24:01,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 12:24:01,563 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:24:01,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:24:01,564 INFO L85 PathProgramCache]: Analyzing trace with hash 168565117, now seen corresponding path program 1 times [2024-10-13 12:24:01,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:24:01,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445213302] [2024-10-13 12:24:01,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:24:01,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:24:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:24:01,750 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 12:24:01,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:24:01,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445213302] [2024-10-13 12:24:01,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445213302] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:24:01,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:24:01,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:24:01,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223707173] [2024-10-13 12:24:01,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:24:01,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:24:01,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:24:01,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:24:01,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:24:01,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-10-13 12:24:01,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:24:01,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:24:01,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-10-13 12:24:01,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:24:03,446 INFO L124 PetriNetUnfolderBase]: 4591/7092 cut-off events. [2024-10-13 12:24:03,447 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:24:03,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13527 conditions, 7092 events. 4591/7092 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 47932 event pairs, 1360 based on Foata normal form. 0/6756 useless extension candidates. Maximal degree in co-relation 13520. Up to 5038 conditions per place. [2024-10-13 12:24:03,491 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 45 selfloop transitions, 2 changer transitions 2/66 dead transitions. [2024-10-13 12:24:03,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 245 flow [2024-10-13 12:24:03,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:24:03,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:24:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-10-13 12:24:03,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38831615120274915 [2024-10-13 12:24:03,494 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 103 flow. Second operand 3 states and 113 transitions. [2024-10-13 12:24:03,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 245 flow [2024-10-13 12:24:03,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:24:03,496 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 102 flow [2024-10-13 12:24:03,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-10-13 12:24:03,497 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -46 predicate places. [2024-10-13 12:24:03,497 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 102 flow [2024-10-13 12:24:03,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:24:03,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:24:03,498 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:24:03,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 12:24:03,499 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:24:03,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:24:03,499 INFO L85 PathProgramCache]: Analyzing trace with hash 515117306, now seen corresponding path program 1 times [2024-10-13 12:24:03,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:24:03,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874209975] [2024-10-13 12:24:03,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:24:03,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:24:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:24:03,604 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 12:24:03,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:24:03,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874209975] [2024-10-13 12:24:03,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874209975] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:24:03,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:24:03,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:24:03,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299879414] [2024-10-13 12:24:03,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:24:03,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:24:03,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:24:03,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:24:03,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:24:03,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-10-13 12:24:03,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:24:03,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:24:03,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-10-13 12:24:03,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:24:04,791 INFO L124 PetriNetUnfolderBase]: 3961/6222 cut-off events. [2024-10-13 12:24:04,791 INFO L125 PetriNetUnfolderBase]: For 372/372 co-relation queries the response was YES. [2024-10-13 12:24:04,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12184 conditions, 6222 events. 3961/6222 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 41153 event pairs, 1309 based on Foata normal form. 0/5967 useless extension candidates. Maximal degree in co-relation 12176. Up to 4477 conditions per place. [2024-10-13 12:24:04,846 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 41 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-10-13 12:24:04,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 224 flow [2024-10-13 12:24:04,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:24:04,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:24:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-10-13 12:24:04,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3711340206185567 [2024-10-13 12:24:04,850 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 102 flow. Second operand 3 states and 108 transitions. [2024-10-13 12:24:04,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 224 flow [2024-10-13 12:24:04,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:24:04,856 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 108 flow [2024-10-13 12:24:04,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-10-13 12:24:04,857 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -46 predicate places. [2024-10-13 12:24:04,857 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 108 flow [2024-10-13 12:24:04,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:24:04,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:24:04,859 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:24:04,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 12:24:04,859 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:24:04,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:24:04,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1106622889, now seen corresponding path program 1 times [2024-10-13 12:24:04,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:24:04,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567888618] [2024-10-13 12:24:04,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:24:04,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:24:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:24:05,033 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 12:24:05,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:24:05,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567888618] [2024-10-13 12:24:05,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567888618] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:24:05,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:24:05,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:24:05,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157109599] [2024-10-13 12:24:05,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:24:05,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:24:05,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:24:05,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:24:05,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:24:05,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-10-13 12:24:05,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:24:05,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:24:05,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-10-13 12:24:05,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:24:06,433 INFO L124 PetriNetUnfolderBase]: 3664/5817 cut-off events. [2024-10-13 12:24:06,433 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2024-10-13 12:24:06,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11735 conditions, 5817 events. 3664/5817 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 38438 event pairs, 1165 based on Foata normal form. 0/5778 useless extension candidates. Maximal degree in co-relation 11726. Up to 4071 conditions per place. [2024-10-13 12:24:06,497 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 40 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-10-13 12:24:06,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 222 flow [2024-10-13 12:24:06,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:24:06,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:24:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-10-13 12:24:06,501 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.327319587628866 [2024-10-13 12:24:06,502 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 108 flow. Second operand 4 states and 127 transitions. [2024-10-13 12:24:06,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 222 flow [2024-10-13 12:24:06,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:24:06,506 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 104 flow [2024-10-13 12:24:06,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2024-10-13 12:24:06,507 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -46 predicate places. [2024-10-13 12:24:06,508 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 104 flow [2024-10-13 12:24:06,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:24:06,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:24:06,508 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:24:06,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 12:24:06,509 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:24:06,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:24:06,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1106622890, now seen corresponding path program 1 times [2024-10-13 12:24:06,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:24:06,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474253147] [2024-10-13 12:24:06,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:24:06,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:24:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:24:06,926 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 12:24:06,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:24:06,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474253147] [2024-10-13 12:24:06,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474253147] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:24:06,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:24:06,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:24:06,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303059981] [2024-10-13 12:24:06,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:24:06,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:24:06,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:24:06,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:24:06,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:24:06,929 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 97 [2024-10-13 12:24:06,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:24:06,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:24:06,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 97 [2024-10-13 12:24:06,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:24:07,940 INFO L124 PetriNetUnfolderBase]: 3367/5412 cut-off events. [2024-10-13 12:24:07,940 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2024-10-13 12:24:07,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10817 conditions, 5412 events. 3367/5412 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 35711 event pairs, 1021 based on Foata normal form. 108/5481 useless extension candidates. Maximal degree in co-relation 10808. Up to 3666 conditions per place. [2024-10-13 12:24:07,984 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 39 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-10-13 12:24:07,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 216 flow [2024-10-13 12:24:07,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:24:07,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:24:07,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-10-13 12:24:07,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3247422680412371 [2024-10-13 12:24:07,987 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 104 flow. Second operand 4 states and 126 transitions. [2024-10-13 12:24:07,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 216 flow [2024-10-13 12:24:07,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 211 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:24:07,992 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 99 flow [2024-10-13 12:24:07,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2024-10-13 12:24:07,994 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -47 predicate places. [2024-10-13 12:24:07,996 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 99 flow [2024-10-13 12:24:07,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:24:07,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:24:07,997 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 12:24:07,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 12:24:07,997 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:24:07,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:24:07,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1779817010, now seen corresponding path program 1 times [2024-10-13 12:24:07,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:24:07,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696277478] [2024-10-13 12:24:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:24:07,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:24:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:24:08,076 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 12:24:08,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:24:08,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696277478] [2024-10-13 12:24:08,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696277478] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:24:08,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:24:08,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:24:08,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097802140] [2024-10-13 12:24:08,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:24:08,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:24:08,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:24:08,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:24:08,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:24:08,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 97 [2024-10-13 12:24:08,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:24:08,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:24:08,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 97 [2024-10-13 12:24:08,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:24:09,517 INFO L124 PetriNetUnfolderBase]: 3367/5409 cut-off events. [2024-10-13 12:24:09,517 INFO L125 PetriNetUnfolderBase]: For 312/312 co-relation queries the response was YES. [2024-10-13 12:24:09,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10813 conditions, 5409 events. 3367/5409 cut-off events. For 312/312 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 37009 event pairs, 3367 based on Foata normal form. 144/5415 useless extension candidates. Maximal degree in co-relation 10805. Up to 4646 conditions per place. [2024-10-13 12:24:09,553 INFO L140 encePairwiseOnDemand]: 95/97 looper letters, 23 selfloop transitions, 1 changer transitions 1/41 dead transitions. [2024-10-13 12:24:09,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 41 transitions, 147 flow [2024-10-13 12:24:09,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:24:09,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:24:09,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-10-13 12:24:09,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29553264604810997 [2024-10-13 12:24:09,556 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 99 flow. Second operand 3 states and 86 transitions. [2024-10-13 12:24:09,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 41 transitions, 147 flow [2024-10-13 12:24:09,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 41 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:24:09,558 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 94 flow [2024-10-13 12:24:09,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-10-13 12:24:09,559 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -48 predicate places. [2024-10-13 12:24:09,559 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 94 flow [2024-10-13 12:24:09,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:24:09,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:24:09,560 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 12:24:09,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 12:24:09,560 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:24:09,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:24:09,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1779818351, now seen corresponding path program 1 times [2024-10-13 12:24:09,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:24:09,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414692679] [2024-10-13 12:24:09,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:24:09,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:24:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:24:09,820 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 12:24:09,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:24:09,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414692679] [2024-10-13 12:24:09,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414692679] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:24:09,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:24:09,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:24:09,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503228612] [2024-10-13 12:24:09,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:24:09,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:24:09,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:24:09,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:24:09,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:24:09,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 97 [2024-10-13 12:24:09,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:24:09,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:24:09,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 97 [2024-10-13 12:24:09,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:24:11,979 INFO L124 PetriNetUnfolderBase]: 5559/8578 cut-off events. [2024-10-13 12:24:11,979 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:24:11,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17426 conditions, 8578 events. 5559/8578 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 57114 event pairs, 1255 based on Foata normal form. 0/8357 useless extension candidates. Maximal degree in co-relation 17418. Up to 4327 conditions per place. [2024-10-13 12:24:12,011 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 40 selfloop transitions, 2 changer transitions 54/110 dead transitions. [2024-10-13 12:24:12,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 110 transitions, 444 flow [2024-10-13 12:24:12,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:24:12,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:24:12,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-10-13 12:24:12,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32216494845360827 [2024-10-13 12:24:12,013 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 94 flow. Second operand 8 states and 250 transitions. [2024-10-13 12:24:12,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 110 transitions, 444 flow [2024-10-13 12:24:12,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 110 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:24:12,015 INFO L231 Difference]: Finished difference. Result has 66 places, 39 transitions, 107 flow [2024-10-13 12:24:12,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=107, PETRI_PLACES=66, PETRI_TRANSITIONS=39} [2024-10-13 12:24:12,016 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -38 predicate places. [2024-10-13 12:24:12,016 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 39 transitions, 107 flow [2024-10-13 12:24:12,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:24:12,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:24:12,017 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 12:24:12,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 12:24:12,017 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:24:12,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:24:12,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1702241104, now seen corresponding path program 1 times [2024-10-13 12:24:12,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:24:12,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945357367] [2024-10-13 12:24:12,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:24:12,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:24:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:24:12,237 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 12:24:12,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:24:12,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945357367] [2024-10-13 12:24:12,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945357367] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:24:12,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:24:12,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:24:12,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581965595] [2024-10-13 12:24:12,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:24:12,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:24:12,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:24:12,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:24:12,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:24:12,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 97 [2024-10-13 12:24:12,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 39 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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 12:24:12,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:24:12,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 97 [2024-10-13 12:24:12,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:24:14,447 INFO L124 PetriNetUnfolderBase]: 9775/14891 cut-off events. [2024-10-13 12:24:14,447 INFO L125 PetriNetUnfolderBase]: For 1642/1642 co-relation queries the response was YES. [2024-10-13 12:24:14,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32309 conditions, 14891 events. 9775/14891 cut-off events. For 1642/1642 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 102692 event pairs, 1223 based on Foata normal form. 240/15000 useless extension candidates. Maximal degree in co-relation 32295. Up to 6241 conditions per place. [2024-10-13 12:24:14,567 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 49 selfloop transitions, 4 changer transitions 49/114 dead transitions. [2024-10-13 12:24:14,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 114 transitions, 492 flow [2024-10-13 12:24:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:24:14,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:24:14,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 240 transitions. [2024-10-13 12:24:14,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30927835051546393 [2024-10-13 12:24:14,569 INFO L175 Difference]: Start difference. First operand has 66 places, 39 transitions, 107 flow. Second operand 8 states and 240 transitions. [2024-10-13 12:24:14,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 114 transitions, 492 flow [2024-10-13 12:24:14,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 114 transitions, 470 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-10-13 12:24:14,665 INFO L231 Difference]: Finished difference. Result has 67 places, 41 transitions, 137 flow [2024-10-13 12:24:14,665 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=137, PETRI_PLACES=67, PETRI_TRANSITIONS=41} [2024-10-13 12:24:14,666 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -37 predicate places. [2024-10-13 12:24:14,666 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 41 transitions, 137 flow [2024-10-13 12:24:14,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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 12:24:14,666 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:24:14,667 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 12:24:14,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 12:24:14,667 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:24:14,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:24:14,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1629583217, now seen corresponding path program 1 times [2024-10-13 12:24:14,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:24:14,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478443777] [2024-10-13 12:24:14,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:24:14,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:24:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:24:14,989 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 12:24:14,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:24:14,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478443777] [2024-10-13 12:24:14,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478443777] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:24:14,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:24:14,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:24:14,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239734246] [2024-10-13 12:24:14,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:24:14,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:24:14,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:24:14,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:24:14,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:24:15,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 97 [2024-10-13 12:24:15,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 41 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 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 12:24:15,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:24:15,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 97 [2024-10-13 12:24:15,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:24:16,308 INFO L124 PetriNetUnfolderBase]: 4197/6967 cut-off events. [2024-10-13 12:24:16,308 INFO L125 PetriNetUnfolderBase]: For 3724/3740 co-relation queries the response was YES. [2024-10-13 12:24:16,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16001 conditions, 6967 events. 4197/6967 cut-off events. For 3724/3740 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 49131 event pairs, 1689 based on Foata normal form. 180/6947 useless extension candidates. Maximal degree in co-relation 15985. Up to 4093 conditions per place. [2024-10-13 12:24:16,357 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 34 selfloop transitions, 2 changer transitions 37/90 dead transitions. [2024-10-13 12:24:16,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 90 transitions, 401 flow [2024-10-13 12:24:16,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:24:16,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:24:16,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2024-10-13 12:24:16,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3166421207658321 [2024-10-13 12:24:16,358 INFO L175 Difference]: Start difference. First operand has 67 places, 41 transitions, 137 flow. Second operand 7 states and 215 transitions. [2024-10-13 12:24:16,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 90 transitions, 401 flow [2024-10-13 12:24:16,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 90 transitions, 384 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-10-13 12:24:16,376 INFO L231 Difference]: Finished difference. Result has 70 places, 41 transitions, 142 flow [2024-10-13 12:24:16,377 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=142, PETRI_PLACES=70, PETRI_TRANSITIONS=41} [2024-10-13 12:24:16,377 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -34 predicate places. [2024-10-13 12:24:16,377 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 41 transitions, 142 flow [2024-10-13 12:24:16,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 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 12:24:16,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:24:16,378 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 12:24:16,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 12:24:16,379 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:24:16,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:24:16,379 INFO L85 PathProgramCache]: Analyzing trace with hash -284935240, now seen corresponding path program 1 times [2024-10-13 12:24:16,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:24:16,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349979382] [2024-10-13 12:24:16,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:24:16,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:24:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:24:16,683 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 12:24:16,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:24:16,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349979382] [2024-10-13 12:24:16,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349979382] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:24:16,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:24:16,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:24:16,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442367086] [2024-10-13 12:24:16,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:24:16,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:24:16,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:24:16,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:24:16,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:24:16,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 97 [2024-10-13 12:24:16,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 41 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:24:16,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:24:16,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 97 [2024-10-13 12:24:16,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:24:19,197 INFO L124 PetriNetUnfolderBase]: 11150/17193 cut-off events. [2024-10-13 12:24:19,197 INFO L125 PetriNetUnfolderBase]: For 10102/10102 co-relation queries the response was YES. [2024-10-13 12:24:19,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39935 conditions, 17193 events. 11150/17193 cut-off events. For 10102/10102 co-relation queries the response was YES. Maximal size of possible extension queue 956. Compared 125914 event pairs, 3071 based on Foata normal form. 360/17404 useless extension candidates. Maximal degree in co-relation 39916. Up to 5123 conditions per place. [2024-10-13 12:24:19,287 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 42 selfloop transitions, 3 changer transitions 90/147 dead transitions. [2024-10-13 12:24:19,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 147 transitions, 696 flow [2024-10-13 12:24:19,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 12:24:19,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 12:24:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 324 transitions. [2024-10-13 12:24:19,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3036551077788191 [2024-10-13 12:24:19,289 INFO L175 Difference]: Start difference. First operand has 70 places, 41 transitions, 142 flow. Second operand 11 states and 324 transitions. [2024-10-13 12:24:19,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 147 transitions, 696 flow [2024-10-13 12:24:19,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 147 transitions, 656 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-10-13 12:24:19,418 INFO L231 Difference]: Finished difference. Result has 79 places, 41 transitions, 157 flow [2024-10-13 12:24:19,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, 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=11, PETRI_FLOW=157, PETRI_PLACES=79, PETRI_TRANSITIONS=41} [2024-10-13 12:24:19,419 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -25 predicate places. [2024-10-13 12:24:19,419 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 41 transitions, 157 flow [2024-10-13 12:24:19,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:24:19,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:24:19,420 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] [2024-10-13 12:24:19,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 12:24:19,420 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:24:19,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:24:19,421 INFO L85 PathProgramCache]: Analyzing trace with hash -441892768, now seen corresponding path program 1 times [2024-10-13 12:24:19,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:24:19,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280452332] [2024-10-13 12:24:19,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:24:19,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:24:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:24:20,460 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 12:24:20,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:24:20,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280452332] [2024-10-13 12:24:20,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280452332] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:24:20,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:24:20,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:24:20,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073414350] [2024-10-13 12:24:20,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:24:20,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 12:24:20,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:24:20,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 12:24:20,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:24:20,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 97 [2024-10-13 12:24:20,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 41 transitions, 157 flow. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 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 12:24:20,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:24:20,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 97 [2024-10-13 12:24:20,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:24:22,342 INFO L124 PetriNetUnfolderBase]: 6272/10103 cut-off events. [2024-10-13 12:24:22,343 INFO L125 PetriNetUnfolderBase]: For 13664/13757 co-relation queries the response was YES. [2024-10-13 12:24:22,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24265 conditions, 10103 events. 6272/10103 cut-off events. For 13664/13757 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 73620 event pairs, 3030 based on Foata normal form. 312/10089 useless extension candidates. Maximal degree in co-relation 24242. Up to 5362 conditions per place. [2024-10-13 12:24:22,412 INFO L140 encePairwiseOnDemand]: 86/97 looper letters, 51 selfloop transitions, 9 changer transitions 49/126 dead transitions. [2024-10-13 12:24:22,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 126 transitions, 604 flow [2024-10-13 12:24:22,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 12:24:22,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 12:24:22,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 332 transitions. [2024-10-13 12:24:22,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31115276476101217 [2024-10-13 12:24:22,414 INFO L175 Difference]: Start difference. First operand has 79 places, 41 transitions, 157 flow. Second operand 11 states and 332 transitions. [2024-10-13 12:24:22,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 126 transitions, 604 flow [2024-10-13 12:24:22,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 126 transitions, 555 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-10-13 12:24:22,497 INFO L231 Difference]: Finished difference. Result has 81 places, 48 transitions, 224 flow [2024-10-13 12:24:22,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=224, PETRI_PLACES=81, PETRI_TRANSITIONS=48} [2024-10-13 12:24:22,498 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -23 predicate places. [2024-10-13 12:24:22,498 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 48 transitions, 224 flow [2024-10-13 12:24:22,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 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 12:24:22,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:24:22,499 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:24:22,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 12:24:22,499 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:24:22,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:24:22,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1308487490, now seen corresponding path program 1 times [2024-10-13 12:24:22,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:24:22,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472098520] [2024-10-13 12:24:22,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:24:22,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:24:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:24:22,762 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 12:24:22,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:24:22,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472098520] [2024-10-13 12:24:22,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472098520] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:24:22,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:24:22,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:24:22,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245759810] [2024-10-13 12:24:22,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:24:22,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:24:22,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:24:22,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:24:22,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:24:22,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 97 [2024-10-13 12:24:22,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 48 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 12:24:22,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:24:22,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 97 [2024-10-13 12:24:22,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:24:25,707 INFO L124 PetriNetUnfolderBase]: 18477/26467 cut-off events. [2024-10-13 12:24:25,708 INFO L125 PetriNetUnfolderBase]: For 40509/41321 co-relation queries the response was YES. [2024-10-13 12:24:25,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81554 conditions, 26467 events. 18477/26467 cut-off events. For 40509/41321 co-relation queries the response was YES. Maximal size of possible extension queue 1073. Compared 170016 event pairs, 2390 based on Foata normal form. 917/27073 useless extension candidates. Maximal degree in co-relation 81529. Up to 15578 conditions per place. [2024-10-13 12:24:26,066 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 71 selfloop transitions, 6 changer transitions 1/90 dead transitions. [2024-10-13 12:24:26,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 90 transitions, 578 flow [2024-10-13 12:24:26,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:24:26,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:24:26,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-10-13 12:24:26,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32216494845360827 [2024-10-13 12:24:26,067 INFO L175 Difference]: Start difference. First operand has 81 places, 48 transitions, 224 flow. Second operand 4 states and 125 transitions. [2024-10-13 12:24:26,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 90 transitions, 578 flow [2024-10-13 12:24:26,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 90 transitions, 553 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-10-13 12:24:26,166 INFO L231 Difference]: Finished difference. Result has 75 places, 52 transitions, 251 flow [2024-10-13 12:24:26,166 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=75, PETRI_TRANSITIONS=52} [2024-10-13 12:24:26,167 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -29 predicate places. [2024-10-13 12:24:26,167 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 52 transitions, 251 flow [2024-10-13 12:24:26,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 12:24:26,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:24:26,167 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:24:26,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 12:24:26,167 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:24:26,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:24:26,168 INFO L85 PathProgramCache]: Analyzing trace with hash -324660897, now seen corresponding path program 1 times [2024-10-13 12:24:26,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:24:26,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278427292] [2024-10-13 12:24:26,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:24:26,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:24:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:24:26,532 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 12:24:26,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:24:26,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278427292] [2024-10-13 12:24:26,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278427292] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:24:26,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:24:26,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:24:26,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541128800] [2024-10-13 12:24:26,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:24:26,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:24:26,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:24:26,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:24:26,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:24:26,549 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 97 [2024-10-13 12:24:26,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 52 transitions, 251 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 12:24:26,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:24:26,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 97 [2024-10-13 12:24:26,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:24:28,880 INFO L124 PetriNetUnfolderBase]: 13792/19930 cut-off events. [2024-10-13 12:24:28,880 INFO L125 PetriNetUnfolderBase]: For 30173/30869 co-relation queries the response was YES. [2024-10-13 12:24:28,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64229 conditions, 19930 events. 13792/19930 cut-off events. For 30173/30869 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 122581 event pairs, 1048 based on Foata normal form. 872/20589 useless extension candidates. Maximal degree in co-relation 64205. Up to 9617 conditions per place. [2024-10-13 12:24:29,035 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 90 selfloop transitions, 10 changer transitions 1/113 dead transitions. [2024-10-13 12:24:29,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 113 transitions, 750 flow [2024-10-13 12:24:29,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:24:29,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:24:29,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-10-13 12:24:29,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32577319587628867 [2024-10-13 12:24:29,036 INFO L175 Difference]: Start difference. First operand has 75 places, 52 transitions, 251 flow. Second operand 5 states and 158 transitions. [2024-10-13 12:24:29,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 113 transitions, 750 flow [2024-10-13 12:24:29,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 113 transitions, 739 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-13 12:24:29,050 INFO L231 Difference]: Finished difference. Result has 79 places, 56 transitions, 303 flow [2024-10-13 12:24:29,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=303, PETRI_PLACES=79, PETRI_TRANSITIONS=56} [2024-10-13 12:24:29,050 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -25 predicate places. [2024-10-13 12:24:29,051 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 56 transitions, 303 flow [2024-10-13 12:24:29,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 12:24:29,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:24:29,051 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:24:29,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 12:24:29,052 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:24:29,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:24:29,052 INFO L85 PathProgramCache]: Analyzing trace with hash -35677852, now seen corresponding path program 1 times [2024-10-13 12:24:29,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:24:29,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948547183] [2024-10-13 12:24:29,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:24:29,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:24:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:24:29,403 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 12:24:29,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:24:29,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948547183] [2024-10-13 12:24:29,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948547183] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:24:29,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:24:29,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:24:29,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778143023] [2024-10-13 12:24:29,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:24:29,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:24:29,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:24:29,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:24:29,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:24:29,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 97 [2024-10-13 12:24:29,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 56 transitions, 303 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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 12:24:29,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:24:29,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 97 [2024-10-13 12:24:29,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:24:30,943 INFO L124 PetriNetUnfolderBase]: 8407/12151 cut-off events. [2024-10-13 12:24:30,943 INFO L125 PetriNetUnfolderBase]: For 24175/24872 co-relation queries the response was YES. [2024-10-13 12:24:31,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41361 conditions, 12151 events. 8407/12151 cut-off events. For 24175/24872 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 68289 event pairs, 527 based on Foata normal form. 626/12600 useless extension candidates. Maximal degree in co-relation 41335. Up to 3632 conditions per place. [2024-10-13 12:24:31,046 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 97 selfloop transitions, 14 changer transitions 1/124 dead transitions. [2024-10-13 12:24:31,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 124 transitions, 875 flow [2024-10-13 12:24:31,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:24:31,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:24:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-10-13 12:24:31,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3247422680412371 [2024-10-13 12:24:31,048 INFO L175 Difference]: Start difference. First operand has 79 places, 56 transitions, 303 flow. Second operand 6 states and 189 transitions. [2024-10-13 12:24:31,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 124 transitions, 875 flow [2024-10-13 12:24:31,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 124 transitions, 845 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-13 12:24:31,093 INFO L231 Difference]: Finished difference. Result has 82 places, 60 transitions, 353 flow [2024-10-13 12:24:31,094 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=353, PETRI_PLACES=82, PETRI_TRANSITIONS=60} [2024-10-13 12:24:31,094 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -22 predicate places. [2024-10-13 12:24:31,094 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 60 transitions, 353 flow [2024-10-13 12:24:31,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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 12:24:31,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:24:31,095 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:24:31,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 12:24:31,095 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:24:31,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:24:31,096 INFO L85 PathProgramCache]: Analyzing trace with hash -872907106, now seen corresponding path program 1 times [2024-10-13 12:24:31,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:24:31,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360383684] [2024-10-13 12:24:31,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:24:31,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:24:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:24:31,561 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 12:24:31,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:24:31,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360383684] [2024-10-13 12:24:31,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360383684] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:24:31,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:24:31,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:24:31,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13843897] [2024-10-13 12:24:31,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:24:31,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 12:24:31,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:24:31,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 12:24:31,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:24:31,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 97 [2024-10-13 12:24:31,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 60 transitions, 353 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 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 12:24:31,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:24:31,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 97 [2024-10-13 12:24:31,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:24:32,853 INFO L124 PetriNetUnfolderBase]: 5567/7919 cut-off events. [2024-10-13 12:24:32,853 INFO L125 PetriNetUnfolderBase]: For 20131/20812 co-relation queries the response was YES. [2024-10-13 12:24:32,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28726 conditions, 7919 events. 5567/7919 cut-off events. For 20131/20812 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 41750 event pairs, 331 based on Foata normal form. 282/8028 useless extension candidates. Maximal degree in co-relation 28699. Up to 2544 conditions per place. [2024-10-13 12:24:32,910 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 80 selfloop transitions, 18 changer transitions 7/117 dead transitions. [2024-10-13 12:24:32,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 117 transitions, 820 flow [2024-10-13 12:24:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:24:32,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:24:32,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-10-13 12:24:32,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29455081001472755 [2024-10-13 12:24:32,912 INFO L175 Difference]: Start difference. First operand has 82 places, 60 transitions, 353 flow. Second operand 7 states and 200 transitions. [2024-10-13 12:24:32,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 117 transitions, 820 flow [2024-10-13 12:24:32,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 117 transitions, 733 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-10-13 12:24:32,986 INFO L231 Difference]: Finished difference. Result has 80 places, 59 transitions, 328 flow [2024-10-13 12:24:32,986 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=328, PETRI_PLACES=80, PETRI_TRANSITIONS=59} [2024-10-13 12:24:32,987 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -24 predicate places. [2024-10-13 12:24:32,987 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 328 flow [2024-10-13 12:24:32,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 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 12:24:32,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:24:32,987 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:24:32,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 12:24:32,988 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:24:32,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:24:32,988 INFO L85 PathProgramCache]: Analyzing trace with hash 15549490, now seen corresponding path program 1 times [2024-10-13 12:24:32,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:24:32,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636455915] [2024-10-13 12:24:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:24:32,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:24:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:24:39,196 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 12:24:39,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:24:39,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636455915] [2024-10-13 12:24:39,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636455915] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:24:39,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:24:39,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-13 12:24:39,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155400105] [2024-10-13 12:24:39,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:24:39,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:24:39,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:24:39,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:24:39,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:24:39,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 97 [2024-10-13 12:24:39,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 59 transitions, 328 flow. Second operand has 12 states, 12 states have (on average 21.666666666666668) internal successors, (260), 12 states have internal predecessors, (260), 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 12:24:39,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:24:39,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 97 [2024-10-13 12:24:39,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:24:41,904 INFO L124 PetriNetUnfolderBase]: 7857/13049 cut-off events. [2024-10-13 12:24:41,904 INFO L125 PetriNetUnfolderBase]: For 21031/22290 co-relation queries the response was YES. [2024-10-13 12:24:41,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41150 conditions, 13049 events. 7857/13049 cut-off events. For 21031/22290 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 101239 event pairs, 2046 based on Foata normal form. 44/12076 useless extension candidates. Maximal degree in co-relation 41127. Up to 3832 conditions per place. [2024-10-13 12:24:42,020 INFO L140 encePairwiseOnDemand]: 86/97 looper letters, 101 selfloop transitions, 30 changer transitions 28/188 dead transitions. [2024-10-13 12:24:42,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 188 transitions, 1205 flow [2024-10-13 12:24:42,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 12:24:42,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 12:24:42,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 446 transitions. [2024-10-13 12:24:42,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30652920962199315 [2024-10-13 12:24:42,023 INFO L175 Difference]: Start difference. First operand has 80 places, 59 transitions, 328 flow. Second operand 15 states and 446 transitions. [2024-10-13 12:24:42,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 188 transitions, 1205 flow [2024-10-13 12:24:42,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 188 transitions, 911 flow, removed 116 selfloop flow, removed 12 redundant places. [2024-10-13 12:24:42,212 INFO L231 Difference]: Finished difference. Result has 93 places, 88 transitions, 467 flow [2024-10-13 12:24:42,212 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=467, PETRI_PLACES=93, PETRI_TRANSITIONS=88} [2024-10-13 12:24:42,213 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -11 predicate places. [2024-10-13 12:24:42,213 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 88 transitions, 467 flow [2024-10-13 12:24:42,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.666666666666668) internal successors, (260), 12 states have internal predecessors, (260), 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 12:24:42,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:24:42,213 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:24:42,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 12:24:42,214 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:24:42,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:24:42,214 INFO L85 PathProgramCache]: Analyzing trace with hash -147688176, now seen corresponding path program 2 times [2024-10-13 12:24:42,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:24:42,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444330047] [2024-10-13 12:24:42,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:24:42,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:24:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:24:43,847 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 12:24:43,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:24:43,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444330047] [2024-10-13 12:24:43,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444330047] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:24:43,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:24:43,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 12:24:43,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080537050] [2024-10-13 12:24:43,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:24:43,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 12:24:43,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:24:43,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 12:24:43,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-13 12:24:43,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 97 [2024-10-13 12:24:43,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 88 transitions, 467 flow. Second operand has 9 states, 9 states have (on average 22.22222222222222) internal successors, (200), 9 states have internal predecessors, (200), 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 12:24:43,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:24:43,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 97 [2024-10-13 12:24:43,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:24:46,038 INFO L124 PetriNetUnfolderBase]: 10892/18136 cut-off events. [2024-10-13 12:24:46,038 INFO L125 PetriNetUnfolderBase]: For 13997/14990 co-relation queries the response was YES. [2024-10-13 12:24:46,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45820 conditions, 18136 events. 10892/18136 cut-off events. For 13997/14990 co-relation queries the response was YES. Maximal size of possible extension queue 1493. Compared 150346 event pairs, 4746 based on Foata normal form. 88/16608 useless extension candidates. Maximal degree in co-relation 45793. Up to 8319 conditions per place. [2024-10-13 12:24:46,263 INFO L140 encePairwiseOnDemand]: 86/97 looper letters, 71 selfloop transitions, 25 changer transitions 28/153 dead transitions. [2024-10-13 12:24:46,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 153 transitions, 998 flow [2024-10-13 12:24:46,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:24:46,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:24:46,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 263 transitions. [2024-10-13 12:24:46,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30126002290950743 [2024-10-13 12:24:46,265 INFO L175 Difference]: Start difference. First operand has 93 places, 88 transitions, 467 flow. Second operand 9 states and 263 transitions. [2024-10-13 12:24:46,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 153 transitions, 998 flow [2024-10-13 12:24:46,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 153 transitions, 964 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-10-13 12:24:46,293 INFO L231 Difference]: Finished difference. Result has 102 places, 102 transitions, 655 flow [2024-10-13 12:24:46,293 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=655, PETRI_PLACES=102, PETRI_TRANSITIONS=102} [2024-10-13 12:24:46,293 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -2 predicate places. [2024-10-13 12:24:46,294 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 102 transitions, 655 flow [2024-10-13 12:24:46,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.22222222222222) internal successors, (200), 9 states have internal predecessors, (200), 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 12:24:46,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:24:46,294 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:24:46,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-13 12:24:46,295 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:24:46,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:24:46,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1834485824, now seen corresponding path program 3 times [2024-10-13 12:24:46,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:24:46,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939095292] [2024-10-13 12:24:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:24:46,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:24:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:24:49,153 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 12:24:49,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:24:49,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939095292] [2024-10-13 12:24:49,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939095292] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:24:49,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:24:49,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 12:24:49,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979185559] [2024-10-13 12:24:49,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:24:49,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:24:49,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:24:49,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:24:49,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:24:49,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 97 [2024-10-13 12:24:49,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 102 transitions, 655 flow. Second operand has 10 states, 10 states have (on average 22.0) internal successors, (220), 10 states have internal predecessors, (220), 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 12:24:49,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:24:49,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 97 [2024-10-13 12:24:49,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:24:51,773 INFO L124 PetriNetUnfolderBase]: 14000/23733 cut-off events. [2024-10-13 12:24:51,773 INFO L125 PetriNetUnfolderBase]: For 27411/28787 co-relation queries the response was YES. [2024-10-13 12:24:52,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62771 conditions, 23733 events. 14000/23733 cut-off events. For 27411/28787 co-relation queries the response was YES. Maximal size of possible extension queue 1986. Compared 207840 event pairs, 4383 based on Foata normal form. 141/21750 useless extension candidates. Maximal degree in co-relation 62739. Up to 6891 conditions per place. [2024-10-13 12:24:52,147 INFO L140 encePairwiseOnDemand]: 88/97 looper letters, 92 selfloop transitions, 17 changer transitions 31/169 dead transitions. [2024-10-13 12:24:52,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 169 transitions, 1258 flow [2024-10-13 12:24:52,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:24:52,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:24:52,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2024-10-13 12:24:52,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3170103092783505 [2024-10-13 12:24:52,149 INFO L175 Difference]: Start difference. First operand has 102 places, 102 transitions, 655 flow. Second operand 8 states and 246 transitions. [2024-10-13 12:24:52,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 169 transitions, 1258 flow [2024-10-13 12:24:52,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 169 transitions, 1211 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-10-13 12:24:52,264 INFO L231 Difference]: Finished difference. Result has 109 places, 100 transitions, 681 flow [2024-10-13 12:24:52,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=681, PETRI_PLACES=109, PETRI_TRANSITIONS=100} [2024-10-13 12:24:52,265 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, 5 predicate places. [2024-10-13 12:24:52,265 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 100 transitions, 681 flow [2024-10-13 12:24:52,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.0) internal successors, (220), 10 states have internal predecessors, (220), 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 12:24:52,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:24:52,266 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:24:52,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 12:24:52,266 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2024-10-13 12:24:52,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:24:52,266 INFO L85 PathProgramCache]: Analyzing trace with hash 221063158, now seen corresponding path program 4 times [2024-10-13 12:24:52,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:24:52,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497747297] [2024-10-13 12:24:52,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:24:52,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:24:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat