./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -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 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:54:07,988 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:54:08,050 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:54:08,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:54:08,057 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:54:08,085 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:54:08,085 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:54:08,086 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:54:08,086 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:54:08,086 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:54:08,087 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:54:08,087 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:54:08,087 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:54:08,087 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:54:08,088 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:54:08,088 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:54:08,088 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:54:08,089 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:54:08,089 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:54:08,089 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:54:08,089 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:54:08,093 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:54:08,093 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:54:08,093 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:54:08,095 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:54:08,096 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:54:08,096 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:54:08,096 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:54:08,096 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:54:08,096 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:54:08,096 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:54:08,097 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:54:08,097 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:54:08,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:54:08,097 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:54:08,097 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:54:08,097 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:54:08,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:54:08,098 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:54:08,098 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:54:08,099 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:54:08,099 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:54:08,099 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-11-09 10:54:08,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:54:08,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:54:08,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:54:08,323 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:54:08,324 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:54:08,325 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-09 10:54:09,570 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:54:09,748 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:54:09,749 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-09 10:54:09,756 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b547aef0/82b029131bb14efd85b25571a52b7594/FLAG56b1f5997 [2024-11-09 10:54:09,769 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b547aef0/82b029131bb14efd85b25571a52b7594 [2024-11-09 10:54:09,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:54:09,773 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:54:09,774 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:54:09,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:54:09,779 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:54:09,780 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:54:09" (1/1) ... [2024-11-09 10:54:09,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595e3e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:54:09, skipping insertion in model container [2024-11-09 10:54:09,781 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:54:09" (1/1) ... [2024-11-09 10:54:09,800 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:54:09,985 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:54:09,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:54:09,994 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:54:10,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:54:10,031 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:54:10,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:54:10 WrapperNode [2024-11-09 10:54:10,031 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:54:10,032 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:54:10,032 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:54:10,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:54:10,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:54:10" (1/1) ... [2024-11-09 10:54:10,045 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:54:10" (1/1) ... [2024-11-09 10:54:10,066 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 254 [2024-11-09 10:54:10,067 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:54:10,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:54:10,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:54:10,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:54:10,077 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:54:10" (1/1) ... [2024-11-09 10:54:10,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:54:10" (1/1) ... [2024-11-09 10:54:10,080 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:54:10" (1/1) ... [2024-11-09 10:54:10,111 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-09 10:54:10,112 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:54:10" (1/1) ... [2024-11-09 10:54:10,113 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:54:10" (1/1) ... [2024-11-09 10:54:10,124 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:54:10" (1/1) ... [2024-11-09 10:54:10,131 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:54:10" (1/1) ... [2024-11-09 10:54:10,136 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:54:10" (1/1) ... [2024-11-09 10:54:10,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:54:10" (1/1) ... [2024-11-09 10:54:10,140 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:54:10,141 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:54:10,141 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:54:10,141 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:54:10,142 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:54:10" (1/1) ... [2024-11-09 10:54:10,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:54:10,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:54:10,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 10:54:10,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 10:54:10,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:54:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 10:54:10,223 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 10:54:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 10:54:10,223 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 10:54:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 10:54:10,223 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 10:54:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:54:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:54:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 10:54:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 10:54:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 10:54:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 10:54:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 10:54:10,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:54:10,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:54:10,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 10:54:10,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 10:54:10,255 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:54:10,367 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:54:10,369 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:54:10,695 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:54:10,696 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:54:10,958 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:54:10,958 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-09 10:54:10,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:54:10 BoogieIcfgContainer [2024-11-09 10:54:10,960 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:54:10,962 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:54:10,962 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:54:10,964 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:54:10,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:54:09" (1/3) ... [2024-11-09 10:54:10,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60efd408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:54:10, skipping insertion in model container [2024-11-09 10:54:10,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:54:10" (2/3) ... [2024-11-09 10:54:10,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60efd408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:54:10, skipping insertion in model container [2024-11-09 10:54:10,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:54:10" (3/3) ... [2024-11-09 10:54:10,967 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-11-09 10:54:10,981 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:54:10,981 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-09 10:54:10,981 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:54:11,085 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 10:54:11,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 62 transitions, 145 flow [2024-11-09 10:54:11,151 INFO L124 PetriNetUnfolderBase]: 7/59 cut-off events. [2024-11-09 10:54:11,151 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 10:54:11,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 7/59 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 149 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-11-09 10:54:11,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 62 transitions, 145 flow [2024-11-09 10:54:11,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 58 transitions, 134 flow [2024-11-09 10:54:11,170 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:54:11,177 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;@3c35ea08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:54:11,177 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-09 10:54:11,180 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:54:11,182 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-09 10:54:11,182 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:54:11,182 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:11,183 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:54:11,184 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:11,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:11,189 INFO L85 PathProgramCache]: Analyzing trace with hash 759561, now seen corresponding path program 1 times [2024-11-09 10:54:11,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:11,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127517197] [2024-11-09 10:54:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:11,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:54:11,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:11,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127517197] [2024-11-09 10:54:11,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127517197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:11,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:11,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:54:11,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926504798] [2024-11-09 10:54:11,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:11,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:54:11,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:11,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:54:11,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:54:11,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-09 10:54:11,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:11,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:11,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-09 10:54:11,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:12,120 INFO L124 PetriNetUnfolderBase]: 4012/6158 cut-off events. [2024-11-09 10:54:12,121 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-11-09 10:54:12,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11859 conditions, 6158 events. 4012/6158 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37744 event pairs, 3528 based on Foata normal form. 379/4445 useless extension candidates. Maximal degree in co-relation 11339. Up to 5391 conditions per place. [2024-11-09 10:54:12,164 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 40 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-11-09 10:54:12,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 206 flow [2024-11-09 10:54:12,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:54:12,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:54:12,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-09 10:54:12,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-11-09 10:54:12,176 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 134 flow. Second operand 3 states and 89 transitions. [2024-11-09 10:54:12,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 206 flow [2024-11-09 10:54:12,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 194 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 10:54:12,187 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 114 flow [2024-11-09 10:54:12,189 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2024-11-09 10:54:12,193 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -8 predicate places. [2024-11-09 10:54:12,194 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 114 flow [2024-11-09 10:54:12,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:12,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:12,194 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:54:12,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:54:12,194 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:12,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:12,195 INFO L85 PathProgramCache]: Analyzing trace with hash 759562, now seen corresponding path program 1 times [2024-11-09 10:54:12,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:12,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299850687] [2024-11-09 10:54:12,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:12,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:12,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:54:12,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:12,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299850687] [2024-11-09 10:54:12,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299850687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:12,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:12,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:54:12,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948541093] [2024-11-09 10:54:12,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:12,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:54:12,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:12,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:54:12,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:54:12,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-09 10:54:12,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:12,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:12,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-09 10:54:12,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:12,915 INFO L124 PetriNetUnfolderBase]: 4013/6161 cut-off events. [2024-11-09 10:54:12,915 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-09 10:54:12,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11678 conditions, 6161 events. 4013/6161 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37750 event pairs, 3528 based on Foata normal form. 0/4067 useless extension candidates. Maximal degree in co-relation 11649. Up to 5400 conditions per place. [2024-11-09 10:54:12,949 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 43 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-11-09 10:54:12,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 214 flow [2024-11-09 10:54:12,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:54:12,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:54:12,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-09 10:54:12,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-11-09 10:54:12,952 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 114 flow. Second operand 4 states and 104 transitions. [2024-11-09 10:54:12,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 214 flow [2024-11-09 10:54:12,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:54:12,955 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 137 flow [2024-11-09 10:54:12,956 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2024-11-09 10:54:12,957 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-11-09 10:54:12,957 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 137 flow [2024-11-09 10:54:12,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:12,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:12,957 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-09 10:54:12,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:54:12,958 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:12,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:12,959 INFO L85 PathProgramCache]: Analyzing trace with hash 23547245, now seen corresponding path program 1 times [2024-11-09 10:54:12,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:12,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966767331] [2024-11-09 10:54:12,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:12,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:54:13,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:13,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966767331] [2024-11-09 10:54:13,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966767331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:13,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:13,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:54:13,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445914311] [2024-11-09 10:54:13,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:13,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:54:13,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:13,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:54:13,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:54:13,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-09 10:54:13,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:13,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:13,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-09 10:54:13,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:13,716 INFO L124 PetriNetUnfolderBase]: 4014/6164 cut-off events. [2024-11-09 10:54:13,716 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-09 10:54:13,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11695 conditions, 6164 events. 4014/6164 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37794 event pairs, 3528 based on Foata normal form. 0/4069 useless extension candidates. Maximal degree in co-relation 11670. Up to 5399 conditions per place. [2024-11-09 10:54:13,749 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 43 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-11-09 10:54:13,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 243 flow [2024-11-09 10:54:13,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:54:13,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:54:13,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-09 10:54:13,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-11-09 10:54:13,753 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 137 flow. Second operand 5 states and 121 transitions. [2024-11-09 10:54:13,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 243 flow [2024-11-09 10:54:13,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:54:13,754 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 171 flow [2024-11-09 10:54:13,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-11-09 10:54:13,755 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-09 10:54:13,755 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 171 flow [2024-11-09 10:54:13,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:13,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:13,756 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-09 10:54:13,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:54:13,756 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:13,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:13,757 INFO L85 PathProgramCache]: Analyzing trace with hash 729963479, now seen corresponding path program 1 times [2024-11-09 10:54:13,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:13,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97109977] [2024-11-09 10:54:13,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:13,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:54:13,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:13,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97109977] [2024-11-09 10:54:13,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97109977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:54:13,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952447264] [2024-11-09 10:54:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:13,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:54:13,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:54:13,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:54:13,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:54:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:14,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 10:54:14,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:54:14,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-09 10:54:14,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:54:14,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:54:14,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:54:14,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952447264] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:54:14,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:54:14,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-09 10:54:14,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182571652] [2024-11-09 10:54:14,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:54:14,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:14,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:14,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:14,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:14,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-09 10:54:14,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 171 flow. Second operand has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:14,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:14,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-09 10:54:14,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:14,965 INFO L124 PetriNetUnfolderBase]: 4015/6166 cut-off events. [2024-11-09 10:54:14,966 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-09 10:54:14,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11718 conditions, 6166 events. 4015/6166 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37749 event pairs, 3528 based on Foata normal form. 0/4074 useless extension candidates. Maximal degree in co-relation 11680. Up to 5399 conditions per place. [2024-11-09 10:54:15,000 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 41 selfloop transitions, 11 changer transitions 0/60 dead transitions. [2024-11-09 10:54:15,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 60 transitions, 286 flow [2024-11-09 10:54:15,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:54:15,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 10:54:15,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-11-09 10:54:15,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-11-09 10:54:15,004 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 171 flow. Second operand 9 states and 177 transitions. [2024-11-09 10:54:15,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 60 transitions, 286 flow [2024-11-09 10:54:15,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:54:15,006 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 203 flow [2024-11-09 10:54:15,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=203, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-11-09 10:54:15,007 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2024-11-09 10:54:15,007 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 203 flow [2024-11-09 10:54:15,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:15,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:15,008 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 10:54:15,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 10:54:15,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:54:15,212 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:15,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:15,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1154089852, now seen corresponding path program 1 times [2024-11-09 10:54:15,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:15,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750539392] [2024-11-09 10:54:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:15,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:54:15,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:15,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750539392] [2024-11-09 10:54:15,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750539392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:54:15,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259834128] [2024-11-09 10:54:15,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:15,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:54:15,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:54:15,403 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:54:15,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:54:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:15,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 10:54:15,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:54:15,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 10:54:15,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:54:15,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:54:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:54:15,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259834128] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:54:15,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:54:15,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-09 10:54:15,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056543005] [2024-11-09 10:54:15,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:54:15,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:54:15,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:15,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:54:15,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:54:15,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-09 10:54:15,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 203 flow. Second operand has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:15,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:15,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-09 10:54:15,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:16,386 INFO L124 PetriNetUnfolderBase]: 4016/6168 cut-off events. [2024-11-09 10:54:16,387 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-09 10:54:16,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11734 conditions, 6168 events. 4016/6168 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 37825 event pairs, 3528 based on Foata normal form. 2/4078 useless extension candidates. Maximal degree in co-relation 11688. Up to 5392 conditions per place. [2024-11-09 10:54:16,462 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 36 selfloop transitions, 18 changer transitions 0/62 dead transitions. [2024-11-09 10:54:16,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 62 transitions, 317 flow [2024-11-09 10:54:16,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:54:16,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 10:54:16,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-11-09 10:54:16,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-11-09 10:54:16,467 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 203 flow. Second operand 9 states and 182 transitions. [2024-11-09 10:54:16,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 62 transitions, 317 flow [2024-11-09 10:54:16,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 62 transitions, 270 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-09 10:54:16,471 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 198 flow [2024-11-09 10:54:16,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=198, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-11-09 10:54:16,472 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2024-11-09 10:54:16,473 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 198 flow [2024-11-09 10:54:16,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:16,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:16,473 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:54:16,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 10:54:16,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:54:16,676 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:16,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:16,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1420350188, now seen corresponding path program 1 times [2024-11-09 10:54:16,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:16,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297448204] [2024-11-09 10:54:16,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:16,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:54:16,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:16,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297448204] [2024-11-09 10:54:16,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297448204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:16,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:16,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:54:16,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104034212] [2024-11-09 10:54:16,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:16,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:54:16,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:16,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:54:16,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:54:16,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-09 10:54:16,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:16,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:16,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-09 10:54:16,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:17,123 INFO L124 PetriNetUnfolderBase]: 4177/6469 cut-off events. [2024-11-09 10:54:17,123 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-11-09 10:54:17,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12314 conditions, 6469 events. 4177/6469 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 39384 event pairs, 3675 based on Foata normal form. 112/4483 useless extension candidates. Maximal degree in co-relation 11673. Up to 5406 conditions per place. [2024-11-09 10:54:17,160 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 74 selfloop transitions, 3 changer transitions 1/86 dead transitions. [2024-11-09 10:54:17,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 86 transitions, 443 flow [2024-11-09 10:54:17,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:54:17,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:54:17,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-11-09 10:54:17,161 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-11-09 10:54:17,161 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 198 flow. Second operand 4 states and 136 transitions. [2024-11-09 10:54:17,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 86 transitions, 443 flow [2024-11-09 10:54:17,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 86 transitions, 390 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-09 10:54:17,163 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 190 flow [2024-11-09 10:54:17,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-11-09 10:54:17,164 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-11-09 10:54:17,164 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 190 flow [2024-11-09 10:54:17,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:17,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:17,165 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:54:17,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:54:17,165 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:17,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:17,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1436128967, now seen corresponding path program 1 times [2024-11-09 10:54:17,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:17,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222233299] [2024-11-09 10:54:17,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:17,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:54:17,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:17,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222233299] [2024-11-09 10:54:17,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222233299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:17,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:17,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:54:17,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990111054] [2024-11-09 10:54:17,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:17,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:54:17,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:17,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:54:17,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:54:17,382 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-09 10:54:17,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:17,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:17,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-09 10:54:17,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:17,651 INFO L124 PetriNetUnfolderBase]: 3028/4665 cut-off events. [2024-11-09 10:54:17,652 INFO L125 PetriNetUnfolderBase]: For 436/436 co-relation queries the response was YES. [2024-11-09 10:54:17,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9830 conditions, 4665 events. 3028/4665 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 26635 event pairs, 2670 based on Foata normal form. 0/3354 useless extension candidates. Maximal degree in co-relation 9234. Up to 4179 conditions per place. [2024-11-09 10:54:17,675 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 47 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-11-09 10:54:17,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 280 flow [2024-11-09 10:54:17,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:54:17,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:54:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-09 10:54:17,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-11-09 10:54:17,677 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 190 flow. Second operand 4 states and 98 transitions. [2024-11-09 10:54:17,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 280 flow [2024-11-09 10:54:17,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:54:17,678 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 181 flow [2024-11-09 10:54:17,679 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-11-09 10:54:17,679 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-09 10:54:17,679 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 181 flow [2024-11-09 10:54:17,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:17,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:17,680 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:54:17,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:54:17,680 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:17,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:17,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1436128968, now seen corresponding path program 1 times [2024-11-09 10:54:17,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:17,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721767701] [2024-11-09 10:54:17,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:17,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:54:17,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:17,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721767701] [2024-11-09 10:54:17,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721767701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:17,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:17,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:54:17,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527075291] [2024-11-09 10:54:17,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:17,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:54:17,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:17,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:54:17,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:54:17,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-09 10:54:17,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:17,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:17,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-09 10:54:17,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:17,986 INFO L124 PetriNetUnfolderBase]: 2095/3259 cut-off events. [2024-11-09 10:54:17,986 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-11-09 10:54:17,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6641 conditions, 3259 events. 2095/3259 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17152 event pairs, 1813 based on Foata normal form. 0/2622 useless extension candidates. Maximal degree in co-relation 6025. Up to 2896 conditions per place. [2024-11-09 10:54:18,004 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 41 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-11-09 10:54:18,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 265 flow [2024-11-09 10:54:18,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:54:18,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:54:18,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-11-09 10:54:18,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-11-09 10:54:18,006 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 181 flow. Second operand 5 states and 109 transitions. [2024-11-09 10:54:18,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 265 flow [2024-11-09 10:54:18,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:54:18,008 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 178 flow [2024-11-09 10:54:18,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-11-09 10:54:18,009 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-09 10:54:18,009 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 178 flow [2024-11-09 10:54:18,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:18,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:18,010 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:54:18,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:54:18,010 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:18,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:18,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2069279750, now seen corresponding path program 1 times [2024-11-09 10:54:18,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:18,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151507365] [2024-11-09 10:54:18,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:18,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:54:18,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:18,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151507365] [2024-11-09 10:54:18,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151507365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:18,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:18,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:54:18,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683865983] [2024-11-09 10:54:18,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:18,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:54:18,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:18,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:54:18,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:54:18,058 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-09 10:54:18,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:18,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:18,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-09 10:54:18,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:18,281 INFO L124 PetriNetUnfolderBase]: 1937/3073 cut-off events. [2024-11-09 10:54:18,282 INFO L125 PetriNetUnfolderBase]: For 424/424 co-relation queries the response was YES. [2024-11-09 10:54:18,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6348 conditions, 3073 events. 1937/3073 cut-off events. For 424/424 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 15635 event pairs, 695 based on Foata normal form. 71/2583 useless extension candidates. Maximal degree in co-relation 6070. Up to 2082 conditions per place. [2024-11-09 10:54:18,302 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 60 selfloop transitions, 2 changer transitions 1/71 dead transitions. [2024-11-09 10:54:18,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 71 transitions, 342 flow [2024-11-09 10:54:18,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:54:18,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:54:18,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-09 10:54:18,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-11-09 10:54:18,304 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 178 flow. Second operand 3 states and 102 transitions. [2024-11-09 10:54:18,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 71 transitions, 342 flow [2024-11-09 10:54:18,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 331 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:54:18,307 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 178 flow [2024-11-09 10:54:18,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-11-09 10:54:18,310 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-09 10:54:18,310 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 178 flow [2024-11-09 10:54:18,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:18,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:18,311 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:54:18,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 10:54:18,311 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:18,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:18,311 INFO L85 PathProgramCache]: Analyzing trace with hash -2085322483, now seen corresponding path program 1 times [2024-11-09 10:54:18,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:18,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691363162] [2024-11-09 10:54:18,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:18,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:54:18,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:18,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691363162] [2024-11-09 10:54:18,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691363162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:18,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:18,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:54:18,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829910850] [2024-11-09 10:54:18,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:18,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:54:18,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:18,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:54:18,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:54:18,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-09 10:54:18,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:18,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:18,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-09 10:54:18,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:18,526 INFO L124 PetriNetUnfolderBase]: 1665/2611 cut-off events. [2024-11-09 10:54:18,526 INFO L125 PetriNetUnfolderBase]: For 507/512 co-relation queries the response was YES. [2024-11-09 10:54:18,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5820 conditions, 2611 events. 1665/2611 cut-off events. For 507/512 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12397 event pairs, 717 based on Foata normal form. 15/2267 useless extension candidates. Maximal degree in co-relation 5785. Up to 2249 conditions per place. [2024-11-09 10:54:18,538 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 55 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-11-09 10:54:18,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 320 flow [2024-11-09 10:54:18,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:54:18,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:54:18,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-09 10:54:18,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.510752688172043 [2024-11-09 10:54:18,539 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 178 flow. Second operand 3 states and 95 transitions. [2024-11-09 10:54:18,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 320 flow [2024-11-09 10:54:18,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:54:18,541 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 199 flow [2024-11-09 10:54:18,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-09 10:54:18,541 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-09 10:54:18,542 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 199 flow [2024-11-09 10:54:18,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:18,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:18,542 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:54:18,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 10:54:18,542 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:18,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:18,542 INFO L85 PathProgramCache]: Analyzing trace with hash 372111769, now seen corresponding path program 1 times [2024-11-09 10:54:18,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:18,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757556877] [2024-11-09 10:54:18,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:18,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:54:18,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:18,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757556877] [2024-11-09 10:54:18,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757556877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:18,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:18,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:54:18,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552917081] [2024-11-09 10:54:18,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:18,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:54:18,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:18,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:54:18,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:54:18,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-09 10:54:18,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:18,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:18,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-09 10:54:18,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:18,929 INFO L124 PetriNetUnfolderBase]: 1906/3090 cut-off events. [2024-11-09 10:54:18,930 INFO L125 PetriNetUnfolderBase]: For 1627/1627 co-relation queries the response was YES. [2024-11-09 10:54:18,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7348 conditions, 3090 events. 1906/3090 cut-off events. For 1627/1627 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 15481 event pairs, 1453 based on Foata normal form. 64/2789 useless extension candidates. Maximal degree in co-relation 7311. Up to 2352 conditions per place. [2024-11-09 10:54:18,941 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 46 selfloop transitions, 3 changer transitions 19/76 dead transitions. [2024-11-09 10:54:18,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 397 flow [2024-11-09 10:54:18,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:54:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:54:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-09 10:54:18,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49193548387096775 [2024-11-09 10:54:18,943 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 199 flow. Second operand 4 states and 122 transitions. [2024-11-09 10:54:18,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 397 flow [2024-11-09 10:54:18,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 76 transitions, 372 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-09 10:54:18,945 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 193 flow [2024-11-09 10:54:18,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-11-09 10:54:18,945 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-11-09 10:54:18,945 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 193 flow [2024-11-09 10:54:18,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:18,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:18,946 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:54:18,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 10:54:18,946 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:18,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:18,946 INFO L85 PathProgramCache]: Analyzing trace with hash 699230762, now seen corresponding path program 1 times [2024-11-09 10:54:18,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:18,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202376256] [2024-11-09 10:54:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:18,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:54:19,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:19,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202376256] [2024-11-09 10:54:19,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202376256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:54:19,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135340726] [2024-11-09 10:54:19,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:19,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:54:19,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:54:19,117 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:54:19,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:54:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:19,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 10:54:19,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:54:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:54:19,254 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:54:19,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135340726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:19,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 10:54:19,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-09 10:54:19,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031262732] [2024-11-09 10:54:19,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:19,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:54:19,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:19,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:54:19,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 10:54:19,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-09 10:54:19,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:19,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:19,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-09 10:54:19,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:19,426 INFO L124 PetriNetUnfolderBase]: 1256/2044 cut-off events. [2024-11-09 10:54:19,427 INFO L125 PetriNetUnfolderBase]: For 577/577 co-relation queries the response was YES. [2024-11-09 10:54:19,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4606 conditions, 2044 events. 1256/2044 cut-off events. For 577/577 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9674 event pairs, 929 based on Foata normal form. 0/1890 useless extension candidates. Maximal degree in co-relation 4567. Up to 1767 conditions per place. [2024-11-09 10:54:19,435 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 43 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-11-09 10:54:19,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 279 flow [2024-11-09 10:54:19,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:54:19,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:54:19,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-09 10:54:19,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-11-09 10:54:19,437 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 193 flow. Second operand 4 states and 100 transitions. [2024-11-09 10:54:19,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 279 flow [2024-11-09 10:54:19,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 272 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 10:54:19,438 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 186 flow [2024-11-09 10:54:19,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-11-09 10:54:19,438 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-09 10:54:19,439 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 186 flow [2024-11-09 10:54:19,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:19,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:19,439 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:54:19,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 10:54:19,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:54:19,640 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:19,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:19,640 INFO L85 PathProgramCache]: Analyzing trace with hash 699230761, now seen corresponding path program 1 times [2024-11-09 10:54:19,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:19,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982809276] [2024-11-09 10:54:19,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:19,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:54:19,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:19,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982809276] [2024-11-09 10:54:19,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982809276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:19,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:19,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:54:19,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587185188] [2024-11-09 10:54:19,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:19,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:54:19,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:19,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:54:19,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:54:19,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-09 10:54:19,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:19,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:19,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-09 10:54:19,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:19,824 INFO L124 PetriNetUnfolderBase]: 902/1526 cut-off events. [2024-11-09 10:54:19,824 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2024-11-09 10:54:19,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3299 conditions, 1526 events. 902/1526 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7086 event pairs, 653 based on Foata normal form. 97/1538 useless extension candidates. Maximal degree in co-relation 3259. Up to 1271 conditions per place. [2024-11-09 10:54:19,831 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 42 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-09 10:54:19,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 270 flow [2024-11-09 10:54:19,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:54:19,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:54:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-11-09 10:54:19,832 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-11-09 10:54:19,832 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 186 flow. Second operand 4 states and 90 transitions. [2024-11-09 10:54:19,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 270 flow [2024-11-09 10:54:19,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:54:19,833 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 180 flow [2024-11-09 10:54:19,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-11-09 10:54:19,834 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-09 10:54:19,834 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 180 flow [2024-11-09 10:54:19,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:19,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:19,835 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] [2024-11-09 10:54:19,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 10:54:19,835 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:19,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:19,835 INFO L85 PathProgramCache]: Analyzing trace with hash -68022964, now seen corresponding path program 1 times [2024-11-09 10:54:19,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:19,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478962741] [2024-11-09 10:54:19,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:19,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:20,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:20,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:20,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478962741] [2024-11-09 10:54:20,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478962741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:20,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:20,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:20,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817323768] [2024-11-09 10:54:20,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:20,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:20,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:20,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:20,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:20,457 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:20,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 180 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:20,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:20,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:20,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:20,878 INFO L124 PetriNetUnfolderBase]: 1304/2220 cut-off events. [2024-11-09 10:54:20,878 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-11-09 10:54:20,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4813 conditions, 2220 events. 1304/2220 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 11720 event pairs, 135 based on Foata normal form. 1/2156 useless extension candidates. Maximal degree in co-relation 4774. Up to 1406 conditions per place. [2024-11-09 10:54:20,888 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 108 selfloop transitions, 26 changer transitions 3/144 dead transitions. [2024-11-09 10:54:20,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 144 transitions, 701 flow [2024-11-09 10:54:20,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:54:20,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:54:20,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 307 transitions. [2024-11-09 10:54:20,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41263440860215056 [2024-11-09 10:54:20,890 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 180 flow. Second operand 12 states and 307 transitions. [2024-11-09 10:54:20,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 144 transitions, 701 flow [2024-11-09 10:54:20,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 144 transitions, 697 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:54:20,892 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 314 flow [2024-11-09 10:54:20,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=314, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-11-09 10:54:20,893 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 14 predicate places. [2024-11-09 10:54:20,893 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 314 flow [2024-11-09 10:54:20,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:20,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:20,893 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] [2024-11-09 10:54:20,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 10:54:20,893 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:20,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:20,894 INFO L85 PathProgramCache]: Analyzing trace with hash -2086380966, now seen corresponding path program 2 times [2024-11-09 10:54:20,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:20,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506556362] [2024-11-09 10:54:20,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:20,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:21,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:21,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506556362] [2024-11-09 10:54:21,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506556362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:21,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:21,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:21,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371417527] [2024-11-09 10:54:21,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:21,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:21,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:21,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:21,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:21,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:21,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 314 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:21,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:21,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:21,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:22,005 INFO L124 PetriNetUnfolderBase]: 1474/2573 cut-off events. [2024-11-09 10:54:22,005 INFO L125 PetriNetUnfolderBase]: For 1567/1567 co-relation queries the response was YES. [2024-11-09 10:54:22,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6732 conditions, 2573 events. 1474/2573 cut-off events. For 1567/1567 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 14243 event pairs, 373 based on Foata normal form. 1/2495 useless extension candidates. Maximal degree in co-relation 6688. Up to 1741 conditions per place. [2024-11-09 10:54:22,018 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 107 selfloop transitions, 34 changer transitions 3/151 dead transitions. [2024-11-09 10:54:22,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 151 transitions, 889 flow [2024-11-09 10:54:22,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:22,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-11-09 10:54:22,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4120234604105572 [2024-11-09 10:54:22,019 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 314 flow. Second operand 11 states and 281 transitions. [2024-11-09 10:54:22,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 151 transitions, 889 flow [2024-11-09 10:54:22,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 151 transitions, 882 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:54:22,023 INFO L231 Difference]: Finished difference. Result has 90 places, 96 transitions, 539 flow [2024-11-09 10:54:22,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=539, PETRI_PLACES=90, PETRI_TRANSITIONS=96} [2024-11-09 10:54:22,024 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 29 predicate places. [2024-11-09 10:54:22,024 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 96 transitions, 539 flow [2024-11-09 10:54:22,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:22,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:22,025 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] [2024-11-09 10:54:22,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 10:54:22,025 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:22,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:22,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1511651402, now seen corresponding path program 3 times [2024-11-09 10:54:22,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:22,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645225474] [2024-11-09 10:54:22,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:22,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:22,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:22,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:22,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645225474] [2024-11-09 10:54:22,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645225474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:22,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:22,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:22,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455205421] [2024-11-09 10:54:22,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:22,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:22,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:22,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:22,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:22,616 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:22,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 96 transitions, 539 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:22,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:22,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:22,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:23,125 INFO L124 PetriNetUnfolderBase]: 1641/2889 cut-off events. [2024-11-09 10:54:23,125 INFO L125 PetriNetUnfolderBase]: For 3634/3646 co-relation queries the response was YES. [2024-11-09 10:54:23,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8524 conditions, 2889 events. 1641/2889 cut-off events. For 3634/3646 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 16848 event pairs, 292 based on Foata normal form. 4/2796 useless extension candidates. Maximal degree in co-relation 8472. Up to 1750 conditions per place. [2024-11-09 10:54:23,142 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 122 selfloop transitions, 44 changer transitions 3/176 dead transitions. [2024-11-09 10:54:23,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 176 transitions, 1184 flow [2024-11-09 10:54:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:54:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:54:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 311 transitions. [2024-11-09 10:54:23,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41801075268817206 [2024-11-09 10:54:23,144 INFO L175 Difference]: Start difference. First operand has 90 places, 96 transitions, 539 flow. Second operand 12 states and 311 transitions. [2024-11-09 10:54:23,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 176 transitions, 1184 flow [2024-11-09 10:54:23,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 176 transitions, 1165 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-09 10:54:23,152 INFO L231 Difference]: Finished difference. Result has 103 places, 105 transitions, 692 flow [2024-11-09 10:54:23,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=692, PETRI_PLACES=103, PETRI_TRANSITIONS=105} [2024-11-09 10:54:23,153 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 42 predicate places. [2024-11-09 10:54:23,153 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 105 transitions, 692 flow [2024-11-09 10:54:23,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:23,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:23,153 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] [2024-11-09 10:54:23,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 10:54:23,153 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:23,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:23,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1990466488, now seen corresponding path program 4 times [2024-11-09 10:54:23,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:23,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88332658] [2024-11-09 10:54:23,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:23,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:23,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:23,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88332658] [2024-11-09 10:54:23,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88332658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:23,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:23,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:23,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346534381] [2024-11-09 10:54:23,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:23,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:23,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:23,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:23,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:23,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:23,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 105 transitions, 692 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:23,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:23,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:23,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:24,221 INFO L124 PetriNetUnfolderBase]: 1745/3111 cut-off events. [2024-11-09 10:54:24,221 INFO L125 PetriNetUnfolderBase]: For 5800/5812 co-relation queries the response was YES. [2024-11-09 10:54:24,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9853 conditions, 3111 events. 1745/3111 cut-off events. For 5800/5812 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18607 event pairs, 396 based on Foata normal form. 4/3008 useless extension candidates. Maximal degree in co-relation 9797. Up to 2087 conditions per place. [2024-11-09 10:54:24,240 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 129 selfloop transitions, 40 changer transitions 3/179 dead transitions. [2024-11-09 10:54:24,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 179 transitions, 1343 flow [2024-11-09 10:54:24,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:54:24,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:54:24,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 307 transitions. [2024-11-09 10:54:24,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41263440860215056 [2024-11-09 10:54:24,245 INFO L175 Difference]: Start difference. First operand has 103 places, 105 transitions, 692 flow. Second operand 12 states and 307 transitions. [2024-11-09 10:54:24,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 179 transitions, 1343 flow [2024-11-09 10:54:24,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 179 transitions, 1267 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-11-09 10:54:24,257 INFO L231 Difference]: Finished difference. Result has 111 places, 111 transitions, 771 flow [2024-11-09 10:54:24,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=771, PETRI_PLACES=111, PETRI_TRANSITIONS=111} [2024-11-09 10:54:24,258 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 50 predicate places. [2024-11-09 10:54:24,258 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 111 transitions, 771 flow [2024-11-09 10:54:24,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:24,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:24,258 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] [2024-11-09 10:54:24,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 10:54:24,258 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:24,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:24,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1342423630, now seen corresponding path program 5 times [2024-11-09 10:54:24,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:24,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915667107] [2024-11-09 10:54:24,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:24,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:24,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:24,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915667107] [2024-11-09 10:54:24,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915667107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:24,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:24,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:24,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670047218] [2024-11-09 10:54:24,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:24,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:24,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:24,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:24,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:24,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:24,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 111 transitions, 771 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:24,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:24,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:24,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:25,248 INFO L124 PetriNetUnfolderBase]: 1745/3109 cut-off events. [2024-11-09 10:54:25,248 INFO L125 PetriNetUnfolderBase]: For 7577/7601 co-relation queries the response was YES. [2024-11-09 10:54:25,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10254 conditions, 3109 events. 1745/3109 cut-off events. For 7577/7601 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18661 event pairs, 410 based on Foata normal form. 16/3015 useless extension candidates. Maximal degree in co-relation 10194. Up to 2171 conditions per place. [2024-11-09 10:54:25,267 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 125 selfloop transitions, 39 changer transitions 3/174 dead transitions. [2024-11-09 10:54:25,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 174 transitions, 1375 flow [2024-11-09 10:54:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:54:25,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:54:25,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 298 transitions. [2024-11-09 10:54:25,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-11-09 10:54:25,269 INFO L175 Difference]: Start difference. First operand has 111 places, 111 transitions, 771 flow. Second operand 12 states and 298 transitions. [2024-11-09 10:54:25,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 174 transitions, 1375 flow [2024-11-09 10:54:25,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 174 transitions, 1281 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-09 10:54:25,288 INFO L231 Difference]: Finished difference. Result has 117 places, 114 transitions, 800 flow [2024-11-09 10:54:25,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=800, PETRI_PLACES=117, PETRI_TRANSITIONS=114} [2024-11-09 10:54:25,288 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 56 predicate places. [2024-11-09 10:54:25,288 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 114 transitions, 800 flow [2024-11-09 10:54:25,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:25,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:25,289 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] [2024-11-09 10:54:25,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 10:54:25,289 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:25,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:25,290 INFO L85 PathProgramCache]: Analyzing trace with hash 213937972, now seen corresponding path program 6 times [2024-11-09 10:54:25,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:25,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236814225] [2024-11-09 10:54:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:25,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:25,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:25,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:25,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236814225] [2024-11-09 10:54:25,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236814225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:25,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:25,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:25,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232238779] [2024-11-09 10:54:25,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:25,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:25,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:25,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:25,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:25,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:25,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 114 transitions, 800 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:25,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:25,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:25,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:26,422 INFO L124 PetriNetUnfolderBase]: 1867/3349 cut-off events. [2024-11-09 10:54:26,422 INFO L125 PetriNetUnfolderBase]: For 8357/8381 co-relation queries the response was YES. [2024-11-09 10:54:26,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11107 conditions, 3349 events. 1867/3349 cut-off events. For 8357/8381 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 20501 event pairs, 614 based on Foata normal form. 7/3232 useless extension candidates. Maximal degree in co-relation 11044. Up to 2438 conditions per place. [2024-11-09 10:54:26,443 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 132 selfloop transitions, 37 changer transitions 3/179 dead transitions. [2024-11-09 10:54:26,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 179 transitions, 1499 flow [2024-11-09 10:54:26,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:26,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:26,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-11-09 10:54:26,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-11-09 10:54:26,444 INFO L175 Difference]: Start difference. First operand has 117 places, 114 transitions, 800 flow. Second operand 11 states and 280 transitions. [2024-11-09 10:54:26,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 179 transitions, 1499 flow [2024-11-09 10:54:26,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 179 transitions, 1409 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-11-09 10:54:26,465 INFO L231 Difference]: Finished difference. Result has 123 places, 125 transitions, 945 flow [2024-11-09 10:54:26,465 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=945, PETRI_PLACES=123, PETRI_TRANSITIONS=125} [2024-11-09 10:54:26,465 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 62 predicate places. [2024-11-09 10:54:26,465 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 125 transitions, 945 flow [2024-11-09 10:54:26,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:26,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:26,466 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] [2024-11-09 10:54:26,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 10:54:26,466 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:26,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:26,466 INFO L85 PathProgramCache]: Analyzing trace with hash 709586714, now seen corresponding path program 7 times [2024-11-09 10:54:26,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:26,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760083651] [2024-11-09 10:54:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:26,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:26,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:26,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760083651] [2024-11-09 10:54:26,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760083651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:26,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:26,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:26,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186312192] [2024-11-09 10:54:26,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:26,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:26,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:26,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:26,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:26,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:26,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 125 transitions, 945 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:26,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:26,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:26,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:27,532 INFO L124 PetriNetUnfolderBase]: 2007/3588 cut-off events. [2024-11-09 10:54:27,532 INFO L125 PetriNetUnfolderBase]: For 13903/13939 co-relation queries the response was YES. [2024-11-09 10:54:27,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12684 conditions, 3588 events. 2007/3588 cut-off events. For 13903/13939 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22263 event pairs, 606 based on Foata normal form. 9/3475 useless extension candidates. Maximal degree in co-relation 12616. Up to 2643 conditions per place. [2024-11-09 10:54:27,560 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 141 selfloop transitions, 37 changer transitions 3/188 dead transitions. [2024-11-09 10:54:27,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 188 transitions, 1680 flow [2024-11-09 10:54:27,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:27,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:27,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 277 transitions. [2024-11-09 10:54:27,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40615835777126097 [2024-11-09 10:54:27,562 INFO L175 Difference]: Start difference. First operand has 123 places, 125 transitions, 945 flow. Second operand 11 states and 277 transitions. [2024-11-09 10:54:27,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 188 transitions, 1680 flow [2024-11-09 10:54:27,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 188 transitions, 1592 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-11-09 10:54:27,601 INFO L231 Difference]: Finished difference. Result has 135 places, 134 transitions, 1092 flow [2024-11-09 10:54:27,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1092, PETRI_PLACES=135, PETRI_TRANSITIONS=134} [2024-11-09 10:54:27,601 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 74 predicate places. [2024-11-09 10:54:27,602 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 134 transitions, 1092 flow [2024-11-09 10:54:27,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:27,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:27,602 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] [2024-11-09 10:54:27,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 10:54:27,603 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:27,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:27,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1622378782, now seen corresponding path program 8 times [2024-11-09 10:54:27,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:27,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776899111] [2024-11-09 10:54:27,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:27,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:28,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:28,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:28,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776899111] [2024-11-09 10:54:28,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776899111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:28,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:28,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:28,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649912860] [2024-11-09 10:54:28,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:28,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:28,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:28,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:28,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:28,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:28,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 134 transitions, 1092 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:28,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:28,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:28,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:28,602 INFO L124 PetriNetUnfolderBase]: 2139/3846 cut-off events. [2024-11-09 10:54:28,602 INFO L125 PetriNetUnfolderBase]: For 22314/22362 co-relation queries the response was YES. [2024-11-09 10:54:28,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14462 conditions, 3846 events. 2139/3846 cut-off events. For 22314/22362 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 24558 event pairs, 663 based on Foata normal form. 11/3730 useless extension candidates. Maximal degree in co-relation 14389. Up to 2847 conditions per place. [2024-11-09 10:54:28,628 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 152 selfloop transitions, 37 changer transitions 3/199 dead transitions. [2024-11-09 10:54:28,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 199 transitions, 1881 flow [2024-11-09 10:54:28,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:28,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:28,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-11-09 10:54:28,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-09 10:54:28,629 INFO L175 Difference]: Start difference. First operand has 135 places, 134 transitions, 1092 flow. Second operand 11 states and 279 transitions. [2024-11-09 10:54:28,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 199 transitions, 1881 flow [2024-11-09 10:54:28,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 199 transitions, 1751 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-11-09 10:54:28,662 INFO L231 Difference]: Finished difference. Result has 143 places, 143 transitions, 1178 flow [2024-11-09 10:54:28,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1178, PETRI_PLACES=143, PETRI_TRANSITIONS=143} [2024-11-09 10:54:28,663 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 82 predicate places. [2024-11-09 10:54:28,663 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 1178 flow [2024-11-09 10:54:28,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:28,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:28,663 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] [2024-11-09 10:54:28,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 10:54:28,663 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:28,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:28,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2106684206, now seen corresponding path program 9 times [2024-11-09 10:54:28,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:28,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677657856] [2024-11-09 10:54:28,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:28,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:29,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:29,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677657856] [2024-11-09 10:54:29,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677657856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:29,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:29,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:29,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412936753] [2024-11-09 10:54:29,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:29,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:29,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:29,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:29,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:29,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:29,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 143 transitions, 1178 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:29,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:29,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:29,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:29,757 INFO L124 PetriNetUnfolderBase]: 2305/4131 cut-off events. [2024-11-09 10:54:29,757 INFO L125 PetriNetUnfolderBase]: For 29056/29136 co-relation queries the response was YES. [2024-11-09 10:54:29,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16260 conditions, 4131 events. 2305/4131 cut-off events. For 29056/29136 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 26811 event pairs, 722 based on Foata normal form. 9/3998 useless extension candidates. Maximal degree in co-relation 16183. Up to 3056 conditions per place. [2024-11-09 10:54:29,787 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 160 selfloop transitions, 38 changer transitions 3/208 dead transitions. [2024-11-09 10:54:29,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 208 transitions, 2018 flow [2024-11-09 10:54:29,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:29,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:29,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-09 10:54:29,788 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-09 10:54:29,789 INFO L175 Difference]: Start difference. First operand has 143 places, 143 transitions, 1178 flow. Second operand 11 states and 282 transitions. [2024-11-09 10:54:29,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 208 transitions, 2018 flow [2024-11-09 10:54:29,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 208 transitions, 1886 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-11-09 10:54:29,825 INFO L231 Difference]: Finished difference. Result has 151 places, 150 transitions, 1280 flow [2024-11-09 10:54:29,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1280, PETRI_PLACES=151, PETRI_TRANSITIONS=150} [2024-11-09 10:54:29,826 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 90 predicate places. [2024-11-09 10:54:29,826 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 150 transitions, 1280 flow [2024-11-09 10:54:29,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:29,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:29,826 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] [2024-11-09 10:54:29,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 10:54:29,827 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:29,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:29,827 INFO L85 PathProgramCache]: Analyzing trace with hash -788811030, now seen corresponding path program 10 times [2024-11-09 10:54:29,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:29,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593427581] [2024-11-09 10:54:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:29,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:30,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:30,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:30,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593427581] [2024-11-09 10:54:30,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593427581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:30,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:30,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:30,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572494846] [2024-11-09 10:54:30,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:30,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:30,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:30,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:30,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:30,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:30,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 150 transitions, 1280 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:30,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:30,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:30,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:30,726 INFO L124 PetriNetUnfolderBase]: 2366/4235 cut-off events. [2024-11-09 10:54:30,726 INFO L125 PetriNetUnfolderBase]: For 34293/34413 co-relation queries the response was YES. [2024-11-09 10:54:30,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17046 conditions, 4235 events. 2366/4235 cut-off events. For 34293/34413 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 27586 event pairs, 824 based on Foata normal form. 23/4118 useless extension candidates. Maximal degree in co-relation 16965. Up to 3295 conditions per place. [2024-11-09 10:54:30,758 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 154 selfloop transitions, 37 changer transitions 4/202 dead transitions. [2024-11-09 10:54:30,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 202 transitions, 1968 flow [2024-11-09 10:54:30,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:30,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:30,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-11-09 10:54:30,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2024-11-09 10:54:30,759 INFO L175 Difference]: Start difference. First operand has 151 places, 150 transitions, 1280 flow. Second operand 11 states and 269 transitions. [2024-11-09 10:54:30,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 202 transitions, 1968 flow [2024-11-09 10:54:30,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 202 transitions, 1824 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-11-09 10:54:30,802 INFO L231 Difference]: Finished difference. Result has 158 places, 156 transitions, 1307 flow [2024-11-09 10:54:30,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1307, PETRI_PLACES=158, PETRI_TRANSITIONS=156} [2024-11-09 10:54:30,802 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 97 predicate places. [2024-11-09 10:54:30,803 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 156 transitions, 1307 flow [2024-11-09 10:54:30,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:30,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:30,803 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] [2024-11-09 10:54:30,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 10:54:30,803 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:30,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:30,804 INFO L85 PathProgramCache]: Analyzing trace with hash -324453426, now seen corresponding path program 11 times [2024-11-09 10:54:30,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:30,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870946545] [2024-11-09 10:54:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:30,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:31,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:31,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:31,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870946545] [2024-11-09 10:54:31,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870946545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:31,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:31,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:31,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60763617] [2024-11-09 10:54:31,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:31,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:31,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:31,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:31,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:31,300 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:31,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 156 transitions, 1307 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:31,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:31,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:31,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:31,918 INFO L124 PetriNetUnfolderBase]: 2517/4479 cut-off events. [2024-11-09 10:54:31,919 INFO L125 PetriNetUnfolderBase]: For 35209/35289 co-relation queries the response was YES. [2024-11-09 10:54:31,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18050 conditions, 4479 events. 2517/4479 cut-off events. For 35209/35289 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 29543 event pairs, 856 based on Foata normal form. 29/4372 useless extension candidates. Maximal degree in co-relation 17965. Up to 3319 conditions per place. [2024-11-09 10:54:31,961 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 165 selfloop transitions, 43 changer transitions 3/218 dead transitions. [2024-11-09 10:54:31,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 218 transitions, 2177 flow [2024-11-09 10:54:31,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:31,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-11-09 10:54:31,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-11-09 10:54:31,963 INFO L175 Difference]: Start difference. First operand has 158 places, 156 transitions, 1307 flow. Second operand 11 states and 280 transitions. [2024-11-09 10:54:31,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 218 transitions, 2177 flow [2024-11-09 10:54:32,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 218 transitions, 2065 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-11-09 10:54:32,017 INFO L231 Difference]: Finished difference. Result has 165 places, 163 transitions, 1472 flow [2024-11-09 10:54:32,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1472, PETRI_PLACES=165, PETRI_TRANSITIONS=163} [2024-11-09 10:54:32,017 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 104 predicate places. [2024-11-09 10:54:32,017 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 163 transitions, 1472 flow [2024-11-09 10:54:32,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:32,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:32,018 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] [2024-11-09 10:54:32,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 10:54:32,018 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:32,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:32,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1217833348, now seen corresponding path program 12 times [2024-11-09 10:54:32,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:32,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780160762] [2024-11-09 10:54:32,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:32,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:32,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:32,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:32,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780160762] [2024-11-09 10:54:32,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780160762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:32,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:32,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:32,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032818217] [2024-11-09 10:54:32,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:32,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:32,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:32,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:32,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:32,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:32,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 163 transitions, 1472 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:32,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:32,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:32,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:33,068 INFO L124 PetriNetUnfolderBase]: 2517/4483 cut-off events. [2024-11-09 10:54:33,068 INFO L125 PetriNetUnfolderBase]: For 41879/41941 co-relation queries the response was YES. [2024-11-09 10:54:33,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18682 conditions, 4483 events. 2517/4483 cut-off events. For 41879/41941 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 29577 event pairs, 878 based on Foata normal form. 19/4360 useless extension candidates. Maximal degree in co-relation 18593. Up to 3477 conditions per place. [2024-11-09 10:54:33,103 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 170 selfloop transitions, 38 changer transitions 4/219 dead transitions. [2024-11-09 10:54:33,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 219 transitions, 2223 flow [2024-11-09 10:54:33,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:33,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:33,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-11-09 10:54:33,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-11-09 10:54:33,104 INFO L175 Difference]: Start difference. First operand has 165 places, 163 transitions, 1472 flow. Second operand 11 states and 276 transitions. [2024-11-09 10:54:33,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 219 transitions, 2223 flow [2024-11-09 10:54:33,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 219 transitions, 2053 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-11-09 10:54:33,224 INFO L231 Difference]: Finished difference. Result has 171 places, 167 transitions, 1431 flow [2024-11-09 10:54:33,224 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1431, PETRI_PLACES=171, PETRI_TRANSITIONS=167} [2024-11-09 10:54:33,224 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 110 predicate places. [2024-11-09 10:54:33,224 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 167 transitions, 1431 flow [2024-11-09 10:54:33,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:33,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:33,224 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] [2024-11-09 10:54:33,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-09 10:54:33,225 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:33,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:33,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1014499284, now seen corresponding path program 13 times [2024-11-09 10:54:33,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:33,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256472664] [2024-11-09 10:54:33,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:33,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:33,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:33,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256472664] [2024-11-09 10:54:33,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256472664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:33,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:33,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:33,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98661059] [2024-11-09 10:54:33,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:33,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:33,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:33,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:33,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:33,603 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:33,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 167 transitions, 1431 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:33,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:33,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:33,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:34,201 INFO L124 PetriNetUnfolderBase]: 2517/4475 cut-off events. [2024-11-09 10:54:34,201 INFO L125 PetriNetUnfolderBase]: For 36790/36874 co-relation queries the response was YES. [2024-11-09 10:54:34,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18143 conditions, 4475 events. 2517/4475 cut-off events. For 36790/36874 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 29530 event pairs, 882 based on Foata normal form. 35/4376 useless extension candidates. Maximal degree in co-relation 18051. Up to 3473 conditions per place. [2024-11-09 10:54:34,237 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 168 selfloop transitions, 42 changer transitions 4/221 dead transitions. [2024-11-09 10:54:34,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 221 transitions, 2150 flow [2024-11-09 10:54:34,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:34,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:34,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-11-09 10:54:34,238 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-11-09 10:54:34,238 INFO L175 Difference]: Start difference. First operand has 171 places, 167 transitions, 1431 flow. Second operand 11 states and 275 transitions. [2024-11-09 10:54:34,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 221 transitions, 2150 flow [2024-11-09 10:54:34,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 221 transitions, 2042 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-11-09 10:54:34,301 INFO L231 Difference]: Finished difference. Result has 175 places, 171 transitions, 1471 flow [2024-11-09 10:54:34,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1471, PETRI_PLACES=175, PETRI_TRANSITIONS=171} [2024-11-09 10:54:34,302 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 114 predicate places. [2024-11-09 10:54:34,302 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 171 transitions, 1471 flow [2024-11-09 10:54:34,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:34,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:34,303 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] [2024-11-09 10:54:34,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-09 10:54:34,303 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:34,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:34,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1582921742, now seen corresponding path program 14 times [2024-11-09 10:54:34,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:34,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459296761] [2024-11-09 10:54:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:34,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:34,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:34,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:34,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459296761] [2024-11-09 10:54:34,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459296761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:34,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:34,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:34,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123096068] [2024-11-09 10:54:34,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:34,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:34,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:34,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:34,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:34,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:34,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 171 transitions, 1471 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:34,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:34,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:34,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:35,407 INFO L124 PetriNetUnfolderBase]: 2553/4541 cut-off events. [2024-11-09 10:54:35,407 INFO L125 PetriNetUnfolderBase]: For 37036/37120 co-relation queries the response was YES. [2024-11-09 10:54:35,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18317 conditions, 4541 events. 2553/4541 cut-off events. For 37036/37120 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 30160 event pairs, 944 based on Foata normal form. 35/4430 useless extension candidates. Maximal degree in co-relation 18223. Up to 3607 conditions per place. [2024-11-09 10:54:35,454 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 172 selfloop transitions, 38 changer transitions 3/220 dead transitions. [2024-11-09 10:54:35,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 220 transitions, 2165 flow [2024-11-09 10:54:35,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:35,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:35,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-11-09 10:54:35,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2024-11-09 10:54:35,456 INFO L175 Difference]: Start difference. First operand has 175 places, 171 transitions, 1471 flow. Second operand 11 states and 269 transitions. [2024-11-09 10:54:35,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 220 transitions, 2165 flow [2024-11-09 10:54:35,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 220 transitions, 2039 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-11-09 10:54:35,542 INFO L231 Difference]: Finished difference. Result has 179 places, 174 transitions, 1473 flow [2024-11-09 10:54:35,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1473, PETRI_PLACES=179, PETRI_TRANSITIONS=174} [2024-11-09 10:54:35,542 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 118 predicate places. [2024-11-09 10:54:35,543 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 174 transitions, 1473 flow [2024-11-09 10:54:35,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:35,543 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:35,543 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] [2024-11-09 10:54:35,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-09 10:54:35,543 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:35,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:35,543 INFO L85 PathProgramCache]: Analyzing trace with hash 927000246, now seen corresponding path program 15 times [2024-11-09 10:54:35,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:35,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814622744] [2024-11-09 10:54:35,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:35,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:35,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:35,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:35,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814622744] [2024-11-09 10:54:35,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814622744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:35,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:35,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:35,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955459138] [2024-11-09 10:54:35,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:35,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:35,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:35,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:35,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:35,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:35,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 174 transitions, 1473 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:35,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:35,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:35,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:36,573 INFO L124 PetriNetUnfolderBase]: 2553/4554 cut-off events. [2024-11-09 10:54:36,573 INFO L125 PetriNetUnfolderBase]: For 36400/36484 co-relation queries the response was YES. [2024-11-09 10:54:36,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18197 conditions, 4554 events. 2553/4554 cut-off events. For 36400/36484 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 30341 event pairs, 951 based on Foata normal form. 27/4435 useless extension candidates. Maximal degree in co-relation 18101. Up to 3620 conditions per place. [2024-11-09 10:54:36,612 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 174 selfloop transitions, 36 changer transitions 3/220 dead transitions. [2024-11-09 10:54:36,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 220 transitions, 2139 flow [2024-11-09 10:54:36,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:36,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2024-11-09 10:54:36,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-11-09 10:54:36,614 INFO L175 Difference]: Start difference. First operand has 179 places, 174 transitions, 1473 flow. Second operand 11 states and 266 transitions. [2024-11-09 10:54:36,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 220 transitions, 2139 flow [2024-11-09 10:54:36,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 220 transitions, 2029 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-11-09 10:54:36,680 INFO L231 Difference]: Finished difference. Result has 183 places, 176 transitions, 1461 flow [2024-11-09 10:54:36,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1461, PETRI_PLACES=183, PETRI_TRANSITIONS=176} [2024-11-09 10:54:36,681 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 122 predicate places. [2024-11-09 10:54:36,681 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 176 transitions, 1461 flow [2024-11-09 10:54:36,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:36,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:36,681 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] [2024-11-09 10:54:36,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-09 10:54:36,681 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:36,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:36,682 INFO L85 PathProgramCache]: Analyzing trace with hash 611290964, now seen corresponding path program 16 times [2024-11-09 10:54:36,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:36,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258189656] [2024-11-09 10:54:36,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:36,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:37,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:37,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258189656] [2024-11-09 10:54:37,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258189656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:37,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:37,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:37,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611140625] [2024-11-09 10:54:37,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:37,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:37,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:37,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:37,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:37,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:37,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 176 transitions, 1461 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:37,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:37,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:37,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:37,928 INFO L124 PetriNetUnfolderBase]: 2792/5008 cut-off events. [2024-11-09 10:54:37,928 INFO L125 PetriNetUnfolderBase]: For 47389/47449 co-relation queries the response was YES. [2024-11-09 10:54:37,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20801 conditions, 5008 events. 2792/5008 cut-off events. For 47389/47449 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 34447 event pairs, 960 based on Foata normal form. 13/4864 useless extension candidates. Maximal degree in co-relation 20703. Up to 3655 conditions per place. [2024-11-09 10:54:37,972 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 201 selfloop transitions, 45 changer transitions 3/256 dead transitions. [2024-11-09 10:54:37,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 256 transitions, 2586 flow [2024-11-09 10:54:37,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:54:37,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:54:37,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 309 transitions. [2024-11-09 10:54:37,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-11-09 10:54:37,974 INFO L175 Difference]: Start difference. First operand has 183 places, 176 transitions, 1461 flow. Second operand 12 states and 309 transitions. [2024-11-09 10:54:37,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 256 transitions, 2586 flow [2024-11-09 10:54:38,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 256 transitions, 2516 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-09 10:54:38,050 INFO L231 Difference]: Finished difference. Result has 190 places, 188 transitions, 1734 flow [2024-11-09 10:54:38,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1734, PETRI_PLACES=190, PETRI_TRANSITIONS=188} [2024-11-09 10:54:38,051 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 129 predicate places. [2024-11-09 10:54:38,051 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 188 transitions, 1734 flow [2024-11-09 10:54:38,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:38,052 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:38,052 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] [2024-11-09 10:54:38,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-09 10:54:38,052 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:38,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:38,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1043050992, now seen corresponding path program 17 times [2024-11-09 10:54:38,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:38,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453833128] [2024-11-09 10:54:38,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:38,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:38,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:38,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:38,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453833128] [2024-11-09 10:54:38,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453833128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:38,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:38,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:38,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068574162] [2024-11-09 10:54:38,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:38,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:38,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:38,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:38,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:38,493 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:38,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 188 transitions, 1734 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:38,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:38,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:38,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:39,253 INFO L124 PetriNetUnfolderBase]: 2993/5377 cut-off events. [2024-11-09 10:54:39,253 INFO L125 PetriNetUnfolderBase]: For 64972/65120 co-relation queries the response was YES. [2024-11-09 10:54:39,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23822 conditions, 5377 events. 2993/5377 cut-off events. For 64972/65120 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 37689 event pairs, 978 based on Foata normal form. 43/5260 useless extension candidates. Maximal degree in co-relation 23720. Up to 3842 conditions per place. [2024-11-09 10:54:39,301 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 199 selfloop transitions, 55 changer transitions 3/264 dead transitions. [2024-11-09 10:54:39,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 264 transitions, 2935 flow [2024-11-09 10:54:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:54:39,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:54:39,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 308 transitions. [2024-11-09 10:54:39,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-11-09 10:54:39,303 INFO L175 Difference]: Start difference. First operand has 190 places, 188 transitions, 1734 flow. Second operand 12 states and 308 transitions. [2024-11-09 10:54:39,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 264 transitions, 2935 flow [2024-11-09 10:54:39,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 264 transitions, 2705 flow, removed 97 selfloop flow, removed 5 redundant places. [2024-11-09 10:54:39,407 INFO L231 Difference]: Finished difference. Result has 200 places, 199 transitions, 1917 flow [2024-11-09 10:54:39,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1526, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1917, PETRI_PLACES=200, PETRI_TRANSITIONS=199} [2024-11-09 10:54:39,407 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 139 predicate places. [2024-11-09 10:54:39,408 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 199 transitions, 1917 flow [2024-11-09 10:54:39,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:39,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:39,408 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] [2024-11-09 10:54:39,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-09 10:54:39,408 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:39,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:39,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1248608742, now seen corresponding path program 18 times [2024-11-09 10:54:39,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:39,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036610428] [2024-11-09 10:54:39,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:39,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:39,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:39,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:39,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036610428] [2024-11-09 10:54:39,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036610428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:39,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:39,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:39,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830741346] [2024-11-09 10:54:39,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:39,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:39,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:39,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:39,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:39,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:39,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 199 transitions, 1917 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:39,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:39,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:39,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:40,676 INFO L124 PetriNetUnfolderBase]: 3089/5543 cut-off events. [2024-11-09 10:54:40,676 INFO L125 PetriNetUnfolderBase]: For 77663/77781 co-relation queries the response was YES. [2024-11-09 10:54:40,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25332 conditions, 5543 events. 3089/5543 cut-off events. For 77663/77781 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 39108 event pairs, 1076 based on Foata normal form. 19/5401 useless extension candidates. Maximal degree in co-relation 25225. Up to 4114 conditions per place. [2024-11-09 10:54:40,734 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 208 selfloop transitions, 50 changer transitions 3/268 dead transitions. [2024-11-09 10:54:40,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 268 transitions, 3005 flow [2024-11-09 10:54:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:54:40,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:54:40,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 305 transitions. [2024-11-09 10:54:40,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4099462365591398 [2024-11-09 10:54:40,736 INFO L175 Difference]: Start difference. First operand has 200 places, 199 transitions, 1917 flow. Second operand 12 states and 305 transitions. [2024-11-09 10:54:40,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 268 transitions, 3005 flow [2024-11-09 10:54:40,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 268 transitions, 2788 flow, removed 83 selfloop flow, removed 7 redundant places. [2024-11-09 10:54:40,874 INFO L231 Difference]: Finished difference. Result has 207 places, 205 transitions, 1970 flow [2024-11-09 10:54:40,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1970, PETRI_PLACES=207, PETRI_TRANSITIONS=205} [2024-11-09 10:54:40,875 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 146 predicate places. [2024-11-09 10:54:40,875 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 205 transitions, 1970 flow [2024-11-09 10:54:40,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:40,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:40,875 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] [2024-11-09 10:54:40,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-09 10:54:40,875 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:40,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:40,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1749769300, now seen corresponding path program 19 times [2024-11-09 10:54:40,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:40,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145604695] [2024-11-09 10:54:40,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:40,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:41,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:41,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:41,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145604695] [2024-11-09 10:54:41,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145604695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:41,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:41,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:41,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065463172] [2024-11-09 10:54:41,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:41,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:41,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:41,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:41,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:41,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:41,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 205 transitions, 1970 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:41,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:41,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:41,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:42,011 INFO L124 PetriNetUnfolderBase]: 3089/5561 cut-off events. [2024-11-09 10:54:42,011 INFO L125 PetriNetUnfolderBase]: For 76277/76361 co-relation queries the response was YES. [2024-11-09 10:54:42,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25156 conditions, 5561 events. 3089/5561 cut-off events. For 76277/76361 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 39355 event pairs, 1096 based on Foata normal form. 35/5433 useless extension candidates. Maximal degree in co-relation 25046. Up to 4191 conditions per place. [2024-11-09 10:54:42,069 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 205 selfloop transitions, 52 changer transitions 4/268 dead transitions. [2024-11-09 10:54:42,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 268 transitions, 2932 flow [2024-11-09 10:54:42,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:54:42,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:54:42,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 302 transitions. [2024-11-09 10:54:42,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2024-11-09 10:54:42,070 INFO L175 Difference]: Start difference. First operand has 207 places, 205 transitions, 1970 flow. Second operand 12 states and 302 transitions. [2024-11-09 10:54:42,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 268 transitions, 2932 flow [2024-11-09 10:54:42,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 268 transitions, 2773 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-11-09 10:54:42,255 INFO L231 Difference]: Finished difference. Result has 212 places, 209 transitions, 1993 flow [2024-11-09 10:54:42,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1811, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1993, PETRI_PLACES=212, PETRI_TRANSITIONS=209} [2024-11-09 10:54:42,255 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 151 predicate places. [2024-11-09 10:54:42,256 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 209 transitions, 1993 flow [2024-11-09 10:54:42,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:42,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:42,256 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] [2024-11-09 10:54:42,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-09 10:54:42,256 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:42,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:42,256 INFO L85 PathProgramCache]: Analyzing trace with hash -575312784, now seen corresponding path program 20 times [2024-11-09 10:54:42,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:42,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551693794] [2024-11-09 10:54:42,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:42,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:42,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:42,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551693794] [2024-11-09 10:54:42,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551693794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:42,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:42,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:42,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778784530] [2024-11-09 10:54:42,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:42,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:42,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:42,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:42,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:42,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:42,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 209 transitions, 1993 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:42,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:42,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:42,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:43,598 INFO L124 PetriNetUnfolderBase]: 3295/5907 cut-off events. [2024-11-09 10:54:43,598 INFO L125 PetriNetUnfolderBase]: For 89675/89946 co-relation queries the response was YES. [2024-11-09 10:54:43,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27793 conditions, 5907 events. 3295/5907 cut-off events. For 89675/89946 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 42221 event pairs, 1317 based on Foata normal form. 41/5760 useless extension candidates. Maximal degree in co-relation 27681. Up to 4637 conditions per place. [2024-11-09 10:54:43,650 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 229 selfloop transitions, 38 changer transitions 3/277 dead transitions. [2024-11-09 10:54:43,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 277 transitions, 3242 flow [2024-11-09 10:54:43,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:43,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:43,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 285 transitions. [2024-11-09 10:54:43,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4178885630498534 [2024-11-09 10:54:43,653 INFO L175 Difference]: Start difference. First operand has 212 places, 209 transitions, 1993 flow. Second operand 11 states and 285 transitions. [2024-11-09 10:54:43,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 277 transitions, 3242 flow [2024-11-09 10:54:43,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 277 transitions, 3082 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-11-09 10:54:43,816 INFO L231 Difference]: Finished difference. Result has 217 places, 219 transitions, 2200 flow [2024-11-09 10:54:43,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1843, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2200, PETRI_PLACES=217, PETRI_TRANSITIONS=219} [2024-11-09 10:54:43,817 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 156 predicate places. [2024-11-09 10:54:43,817 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 219 transitions, 2200 flow [2024-11-09 10:54:43,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:43,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:43,817 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] [2024-11-09 10:54:43,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-09 10:54:43,817 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:43,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:43,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1539198066, now seen corresponding path program 21 times [2024-11-09 10:54:43,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:43,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740898147] [2024-11-09 10:54:43,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:43,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:44,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:44,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:44,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740898147] [2024-11-09 10:54:44,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740898147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:44,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:44,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:44,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459326815] [2024-11-09 10:54:44,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:44,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:44,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:44,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:44,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:44,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:44,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 219 transitions, 2200 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:44,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:44,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:44,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:44,990 INFO L124 PetriNetUnfolderBase]: 3356/6019 cut-off events. [2024-11-09 10:54:44,990 INFO L125 PetriNetUnfolderBase]: For 105636/106032 co-relation queries the response was YES. [2024-11-09 10:54:45,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28688 conditions, 6019 events. 3356/6019 cut-off events. For 105636/106032 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 43270 event pairs, 1418 based on Foata normal form. 55/5881 useless extension candidates. Maximal degree in co-relation 28572. Up to 4876 conditions per place. [2024-11-09 10:54:45,055 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 223 selfloop transitions, 37 changer transitions 4/271 dead transitions. [2024-11-09 10:54:45,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 271 transitions, 3166 flow [2024-11-09 10:54:45,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:45,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:45,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-11-09 10:54:45,056 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-11-09 10:54:45,056 INFO L175 Difference]: Start difference. First operand has 217 places, 219 transitions, 2200 flow. Second operand 11 states and 272 transitions. [2024-11-09 10:54:45,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 271 transitions, 3166 flow [2024-11-09 10:54:45,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 271 transitions, 2924 flow, removed 103 selfloop flow, removed 5 redundant places. [2024-11-09 10:54:45,197 INFO L231 Difference]: Finished difference. Result has 225 places, 225 transitions, 2185 flow [2024-11-09 10:54:45,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2185, PETRI_PLACES=225, PETRI_TRANSITIONS=225} [2024-11-09 10:54:45,198 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 164 predicate places. [2024-11-09 10:54:45,198 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 225 transitions, 2185 flow [2024-11-09 10:54:45,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:45,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:45,198 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] [2024-11-09 10:54:45,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-09 10:54:45,198 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:45,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:45,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1685242390, now seen corresponding path program 22 times [2024-11-09 10:54:45,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:45,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147116877] [2024-11-09 10:54:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:45,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:45,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:45,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147116877] [2024-11-09 10:54:45,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147116877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:45,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:45,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:45,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206670323] [2024-11-09 10:54:45,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:45,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:45,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:45,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:45,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:45,702 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:45,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 225 transitions, 2185 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:45,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:45,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:45,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:46,711 INFO L124 PetriNetUnfolderBase]: 3492/6263 cut-off events. [2024-11-09 10:54:46,711 INFO L125 PetriNetUnfolderBase]: For 91059/91279 co-relation queries the response was YES. [2024-11-09 10:54:46,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29087 conditions, 6263 events. 3492/6263 cut-off events. For 91059/91279 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 45504 event pairs, 1425 based on Foata normal form. 61/6125 useless extension candidates. Maximal degree in co-relation 28967. Up to 4900 conditions per place. [2024-11-09 10:54:46,789 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 234 selfloop transitions, 43 changer transitions 3/287 dead transitions. [2024-11-09 10:54:46,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 287 transitions, 3377 flow [2024-11-09 10:54:46,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-11-09 10:54:46,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4149560117302053 [2024-11-09 10:54:46,790 INFO L175 Difference]: Start difference. First operand has 225 places, 225 transitions, 2185 flow. Second operand 11 states and 283 transitions. [2024-11-09 10:54:46,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 287 transitions, 3377 flow [2024-11-09 10:54:46,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 287 transitions, 3231 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-11-09 10:54:46,954 INFO L231 Difference]: Finished difference. Result has 232 places, 232 transitions, 2384 flow [2024-11-09 10:54:46,954 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2384, PETRI_PLACES=232, PETRI_TRANSITIONS=232} [2024-11-09 10:54:46,955 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 171 predicate places. [2024-11-09 10:54:46,955 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 232 transitions, 2384 flow [2024-11-09 10:54:46,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:46,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:46,955 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] [2024-11-09 10:54:46,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-09 10:54:46,955 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:46,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:46,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1632758878, now seen corresponding path program 23 times [2024-11-09 10:54:46,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:46,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936017267] [2024-11-09 10:54:46,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:46,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:47,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:47,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:47,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936017267] [2024-11-09 10:54:47,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936017267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:47,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:47,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:47,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560950179] [2024-11-09 10:54:47,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:47,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:47,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:47,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:47,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:47,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:47,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 232 transitions, 2384 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:47,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:47,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:47,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:48,331 INFO L124 PetriNetUnfolderBase]: 3605/6479 cut-off events. [2024-11-09 10:54:48,331 INFO L125 PetriNetUnfolderBase]: For 115110/115341 co-relation queries the response was YES. [2024-11-09 10:54:48,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31205 conditions, 6479 events. 3605/6479 cut-off events. For 115110/115341 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 47526 event pairs, 1507 based on Foata normal form. 51/6316 useless extension candidates. Maximal degree in co-relation 31081. Up to 5207 conditions per place. [2024-11-09 10:54:48,408 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 250 selfloop transitions, 36 changer transitions 3/296 dead transitions. [2024-11-09 10:54:48,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 296 transitions, 3674 flow [2024-11-09 10:54:48,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:48,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:48,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-09 10:54:48,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-09 10:54:48,409 INFO L175 Difference]: Start difference. First operand has 232 places, 232 transitions, 2384 flow. Second operand 11 states and 282 transitions. [2024-11-09 10:54:48,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 296 transitions, 3674 flow [2024-11-09 10:54:48,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 296 transitions, 3436 flow, removed 98 selfloop flow, removed 6 redundant places. [2024-11-09 10:54:48,682 INFO L231 Difference]: Finished difference. Result has 240 places, 239 transitions, 2480 flow [2024-11-09 10:54:48,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2480, PETRI_PLACES=240, PETRI_TRANSITIONS=239} [2024-11-09 10:54:48,683 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 179 predicate places. [2024-11-09 10:54:48,683 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 239 transitions, 2480 flow [2024-11-09 10:54:48,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:48,683 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:48,683 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] [2024-11-09 10:54:48,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-09 10:54:48,683 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:48,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:48,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1494730126, now seen corresponding path program 24 times [2024-11-09 10:54:48,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:48,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571472518] [2024-11-09 10:54:48,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:48,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:49,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:49,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:49,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571472518] [2024-11-09 10:54:49,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571472518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:49,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:49,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:49,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450789337] [2024-11-09 10:54:49,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:49,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:49,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:49,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:49,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:49,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:49,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 239 transitions, 2480 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:49,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:49,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:49,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:50,056 INFO L124 PetriNetUnfolderBase]: 3710/6698 cut-off events. [2024-11-09 10:54:50,056 INFO L125 PetriNetUnfolderBase]: For 130853/131092 co-relation queries the response was YES. [2024-11-09 10:54:50,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32313 conditions, 6698 events. 3710/6698 cut-off events. For 130853/131092 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 49744 event pairs, 1564 based on Foata normal form. 53/6531 useless extension candidates. Maximal degree in co-relation 32184. Up to 5385 conditions per place. [2024-11-09 10:54:50,136 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 256 selfloop transitions, 36 changer transitions 3/302 dead transitions. [2024-11-09 10:54:50,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 302 transitions, 3712 flow [2024-11-09 10:54:50,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:50,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:50,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-09 10:54:50,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-09 10:54:50,137 INFO L175 Difference]: Start difference. First operand has 240 places, 239 transitions, 2480 flow. Second operand 11 states and 282 transitions. [2024-11-09 10:54:50,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 302 transitions, 3712 flow [2024-11-09 10:54:50,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 302 transitions, 3488 flow, removed 94 selfloop flow, removed 5 redundant places. [2024-11-09 10:54:50,473 INFO L231 Difference]: Finished difference. Result has 248 places, 245 transitions, 2517 flow [2024-11-09 10:54:50,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2256, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2517, PETRI_PLACES=248, PETRI_TRANSITIONS=245} [2024-11-09 10:54:50,474 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 187 predicate places. [2024-11-09 10:54:50,474 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 245 transitions, 2517 flow [2024-11-09 10:54:50,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:50,474 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:50,474 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] [2024-11-09 10:54:50,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-09 10:54:50,474 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:50,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:50,475 INFO L85 PathProgramCache]: Analyzing trace with hash 201426106, now seen corresponding path program 25 times [2024-11-09 10:54:50,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:50,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770059894] [2024-11-09 10:54:50,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:50,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:50,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:50,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770059894] [2024-11-09 10:54:50,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770059894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:50,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:50,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:50,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504372735] [2024-11-09 10:54:50,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:50,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:50,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:50,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:50,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:50,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:50,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 245 transitions, 2517 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:50,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:50,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:50,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:51,916 INFO L124 PetriNetUnfolderBase]: 3710/6673 cut-off events. [2024-11-09 10:54:51,916 INFO L125 PetriNetUnfolderBase]: For 130480/130714 co-relation queries the response was YES. [2024-11-09 10:54:51,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31996 conditions, 6673 events. 3710/6673 cut-off events. For 130480/130714 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 49612 event pairs, 1592 based on Foata normal form. 59/6507 useless extension candidates. Maximal degree in co-relation 31863. Up to 5462 conditions per place. [2024-11-09 10:54:51,989 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 252 selfloop transitions, 35 changer transitions 3/297 dead transitions. [2024-11-09 10:54:51,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 297 transitions, 3556 flow [2024-11-09 10:54:51,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:51,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:51,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 273 transitions. [2024-11-09 10:54:51,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4002932551319648 [2024-11-09 10:54:51,990 INFO L175 Difference]: Start difference. First operand has 248 places, 245 transitions, 2517 flow. Second operand 11 states and 273 transitions. [2024-11-09 10:54:51,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 297 transitions, 3556 flow [2024-11-09 10:54:52,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 297 transitions, 3369 flow, removed 74 selfloop flow, removed 6 redundant places. [2024-11-09 10:54:52,255 INFO L231 Difference]: Finished difference. Result has 254 places, 248 transitions, 2465 flow [2024-11-09 10:54:52,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2465, PETRI_PLACES=254, PETRI_TRANSITIONS=248} [2024-11-09 10:54:52,255 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 193 predicate places. [2024-11-09 10:54:52,256 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 248 transitions, 2465 flow [2024-11-09 10:54:52,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:52,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:52,256 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] [2024-11-09 10:54:52,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-09 10:54:52,256 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:52,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:52,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1618897196, now seen corresponding path program 26 times [2024-11-09 10:54:52,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:52,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330614130] [2024-11-09 10:54:52,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:52,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:52,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:52,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330614130] [2024-11-09 10:54:52,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330614130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:52,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:52,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:52,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955329116] [2024-11-09 10:54:52,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:52,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:52,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:52,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:52,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:52,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:52,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 248 transitions, 2465 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:52,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:52,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:52,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:53,839 INFO L124 PetriNetUnfolderBase]: 3806/6883 cut-off events. [2024-11-09 10:54:53,840 INFO L125 PetriNetUnfolderBase]: For 134593/134807 co-relation queries the response was YES. [2024-11-09 10:54:53,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33113 conditions, 6883 events. 3806/6883 cut-off events. For 134593/134807 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 51571 event pairs, 1666 based on Foata normal form. 48/6703 useless extension candidates. Maximal degree in co-relation 32977. Up to 5545 conditions per place. [2024-11-09 10:54:53,903 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 263 selfloop transitions, 37 changer transitions 3/310 dead transitions. [2024-11-09 10:54:53,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 310 transitions, 3736 flow [2024-11-09 10:54:53,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:53,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:53,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-09 10:54:53,904 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-09 10:54:53,904 INFO L175 Difference]: Start difference. First operand has 254 places, 248 transitions, 2465 flow. Second operand 11 states and 282 transitions. [2024-11-09 10:54:53,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 310 transitions, 3736 flow [2024-11-09 10:54:54,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 310 transitions, 3606 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-11-09 10:54:54,229 INFO L231 Difference]: Finished difference. Result has 259 places, 254 transitions, 2612 flow [2024-11-09 10:54:54,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2612, PETRI_PLACES=259, PETRI_TRANSITIONS=254} [2024-11-09 10:54:54,230 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 198 predicate places. [2024-11-09 10:54:54,230 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 254 transitions, 2612 flow [2024-11-09 10:54:54,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:54,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:54,230 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] [2024-11-09 10:54:54,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-09 10:54:54,230 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:54,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:54,231 INFO L85 PathProgramCache]: Analyzing trace with hash -689333314, now seen corresponding path program 27 times [2024-11-09 10:54:54,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:54,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225232348] [2024-11-09 10:54:54,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:54,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:54,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:54,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225232348] [2024-11-09 10:54:54,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225232348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:54,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:54,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:54,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551083330] [2024-11-09 10:54:54,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:54,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:54,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:54,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:54,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:54,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:54,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 254 transitions, 2612 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:54,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:54,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:54,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:56,103 INFO L124 PetriNetUnfolderBase]: 3806/6891 cut-off events. [2024-11-09 10:54:56,103 INFO L125 PetriNetUnfolderBase]: For 144132/144346 co-relation queries the response was YES. [2024-11-09 10:54:56,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33503 conditions, 6891 events. 3806/6891 cut-off events. For 144132/144346 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 51758 event pairs, 1665 based on Foata normal form. 54/6716 useless extension candidates. Maximal degree in co-relation 33364. Up to 5583 conditions per place. [2024-11-09 10:54:56,182 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 261 selfloop transitions, 38 changer transitions 4/310 dead transitions. [2024-11-09 10:54:56,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 310 transitions, 3707 flow [2024-11-09 10:54:56,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:56,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:56,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-11-09 10:54:56,184 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-09 10:54:56,184 INFO L175 Difference]: Start difference. First operand has 259 places, 254 transitions, 2612 flow. Second operand 11 states and 279 transitions. [2024-11-09 10:54:56,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 310 transitions, 3707 flow [2024-11-09 10:54:56,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 310 transitions, 3505 flow, removed 81 selfloop flow, removed 6 redundant places. [2024-11-09 10:54:56,436 INFO L231 Difference]: Finished difference. Result has 265 places, 258 transitions, 2561 flow [2024-11-09 10:54:56,437 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2561, PETRI_PLACES=265, PETRI_TRANSITIONS=258} [2024-11-09 10:54:56,437 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 204 predicate places. [2024-11-09 10:54:56,437 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 258 transitions, 2561 flow [2024-11-09 10:54:56,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:56,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:56,437 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] [2024-11-09 10:54:56,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-09 10:54:56,438 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:56,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:56,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1391138282, now seen corresponding path program 28 times [2024-11-09 10:54:56,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:56,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822632223] [2024-11-09 10:54:56,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:56,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:56,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:56,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:56,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822632223] [2024-11-09 10:54:56,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822632223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:56,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:56,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:56,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347941229] [2024-11-09 10:54:56,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:56,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:56,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:56,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:56,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:56,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:56,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 258 transitions, 2561 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:56,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:56,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:56,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:54:58,059 INFO L124 PetriNetUnfolderBase]: 3806/6889 cut-off events. [2024-11-09 10:54:58,059 INFO L125 PetriNetUnfolderBase]: For 137484/137722 co-relation queries the response was YES. [2024-11-09 10:54:58,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32992 conditions, 6889 events. 3806/6889 cut-off events. For 137484/137722 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 51728 event pairs, 1661 based on Foata normal form. 70/6732 useless extension candidates. Maximal degree in co-relation 32850. Up to 5579 conditions per place. [2024-11-09 10:54:58,145 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 259 selfloop transitions, 42 changer transitions 4/312 dead transitions. [2024-11-09 10:54:58,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 312 transitions, 3604 flow [2024-11-09 10:54:58,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:54:58,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:54:58,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 278 transitions. [2024-11-09 10:54:58,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-11-09 10:54:58,147 INFO L175 Difference]: Start difference. First operand has 265 places, 258 transitions, 2561 flow. Second operand 11 states and 278 transitions. [2024-11-09 10:54:58,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 312 transitions, 3604 flow [2024-11-09 10:54:58,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 312 transitions, 3468 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-11-09 10:54:58,487 INFO L231 Difference]: Finished difference. Result has 269 places, 262 transitions, 2595 flow [2024-11-09 10:54:58,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2595, PETRI_PLACES=269, PETRI_TRANSITIONS=262} [2024-11-09 10:54:58,488 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 208 predicate places. [2024-11-09 10:54:58,488 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 262 transitions, 2595 flow [2024-11-09 10:54:58,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:58,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:54:58,489 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] [2024-11-09 10:54:58,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-09 10:54:58,489 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:54:58,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:54:58,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1170107036, now seen corresponding path program 29 times [2024-11-09 10:54:58,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:54:58,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865173975] [2024-11-09 10:54:58,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:54:58,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:54:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:54:58,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:54:58,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:54:58,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865173975] [2024-11-09 10:54:58,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865173975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:54:58,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:54:58,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:54:58,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039395843] [2024-11-09 10:54:58,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:54:58,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:54:58,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:54:58,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:54:58,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:54:58,868 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:54:58,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 262 transitions, 2595 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:54:58,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:54:58,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:54:58,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:55:00,327 INFO L124 PetriNetUnfolderBase]: 3842/6955 cut-off events. [2024-11-09 10:55:00,327 INFO L125 PetriNetUnfolderBase]: For 136610/136848 co-relation queries the response was YES. [2024-11-09 10:55:00,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33048 conditions, 6955 events. 3842/6955 cut-off events. For 136610/136848 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 52338 event pairs, 1723 based on Foata normal form. 70/6786 useless extension candidates. Maximal degree in co-relation 32904. Up to 5713 conditions per place. [2024-11-09 10:55:00,391 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 263 selfloop transitions, 38 changer transitions 3/311 dead transitions. [2024-11-09 10:55:00,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 311 transitions, 3613 flow [2024-11-09 10:55:00,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:55:00,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:55:00,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-11-09 10:55:00,392 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-11-09 10:55:00,393 INFO L175 Difference]: Start difference. First operand has 269 places, 262 transitions, 2595 flow. Second operand 11 states and 272 transitions. [2024-11-09 10:55:00,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 311 transitions, 3613 flow [2024-11-09 10:55:00,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 311 transitions, 3459 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-11-09 10:55:00,636 INFO L231 Difference]: Finished difference. Result has 273 places, 265 transitions, 2591 flow [2024-11-09 10:55:00,636 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2441, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2591, PETRI_PLACES=273, PETRI_TRANSITIONS=265} [2024-11-09 10:55:00,636 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 212 predicate places. [2024-11-09 10:55:00,636 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 265 transitions, 2591 flow [2024-11-09 10:55:00,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:00,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:55:00,637 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] [2024-11-09 10:55:00,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-09 10:55:00,637 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:55:00,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:55:00,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1826028532, now seen corresponding path program 30 times [2024-11-09 10:55:00,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:55:00,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516244575] [2024-11-09 10:55:00,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:55:00,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:55:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:55:00,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:55:00,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:55:00,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516244575] [2024-11-09 10:55:00,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516244575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:55:00,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:55:00,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:55:00,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974278997] [2024-11-09 10:55:00,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:55:00,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:55:00,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:55:00,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:55:00,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:55:00,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:55:00,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 265 transitions, 2591 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:00,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:55:00,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:55:00,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:55:02,363 INFO L124 PetriNetUnfolderBase]: 3842/6968 cut-off events. [2024-11-09 10:55:02,363 INFO L125 PetriNetUnfolderBase]: For 134281/134519 co-relation queries the response was YES. [2024-11-09 10:55:02,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32797 conditions, 6968 events. 3842/6968 cut-off events. For 134281/134519 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 52598 event pairs, 1730 based on Foata normal form. 62/6791 useless extension candidates. Maximal degree in co-relation 32651. Up to 5726 conditions per place. [2024-11-09 10:55:02,444 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 265 selfloop transitions, 36 changer transitions 3/311 dead transitions. [2024-11-09 10:55:02,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 311 transitions, 3559 flow [2024-11-09 10:55:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:55:02,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:55:02,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-11-09 10:55:02,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2024-11-09 10:55:02,446 INFO L175 Difference]: Start difference. First operand has 273 places, 265 transitions, 2591 flow. Second operand 11 states and 269 transitions. [2024-11-09 10:55:02,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 311 transitions, 3559 flow [2024-11-09 10:55:02,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 311 transitions, 3429 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-11-09 10:55:02,720 INFO L231 Difference]: Finished difference. Result has 277 places, 267 transitions, 2559 flow [2024-11-09 10:55:02,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2559, PETRI_PLACES=277, PETRI_TRANSITIONS=267} [2024-11-09 10:55:02,720 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 216 predicate places. [2024-11-09 10:55:02,721 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 267 transitions, 2559 flow [2024-11-09 10:55:02,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:02,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:55:02,721 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] [2024-11-09 10:55:02,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-09 10:55:02,721 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:55:02,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:55:02,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1339613652, now seen corresponding path program 31 times [2024-11-09 10:55:02,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:55:02,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908694257] [2024-11-09 10:55:02,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:55:02,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:55:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:55:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:55:03,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:55:03,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908694257] [2024-11-09 10:55:03,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908694257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:55:03,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:55:03,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:55:03,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709422928] [2024-11-09 10:55:03,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:55:03,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:55:03,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:55:03,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:55:03,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:55:03,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:55:03,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 267 transitions, 2559 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:03,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:55:03,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:55:03,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:55:04,562 INFO L124 PetriNetUnfolderBase]: 3973/7203 cut-off events. [2024-11-09 10:55:04,562 INFO L125 PetriNetUnfolderBase]: For 150549/150818 co-relation queries the response was YES. [2024-11-09 10:55:04,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34717 conditions, 7203 events. 3973/7203 cut-off events. For 150549/150818 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 54752 event pairs, 1750 based on Foata normal form. 54/7014 useless extension candidates. Maximal degree in co-relation 34569. Up to 5839 conditions per place. [2024-11-09 10:55:04,776 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 281 selfloop transitions, 36 changer transitions 3/327 dead transitions. [2024-11-09 10:55:04,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 327 transitions, 4048 flow [2024-11-09 10:55:04,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:55:04,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:55:04,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-11-09 10:55:04,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-09 10:55:04,777 INFO L175 Difference]: Start difference. First operand has 277 places, 267 transitions, 2559 flow. Second operand 11 states and 279 transitions. [2024-11-09 10:55:04,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 327 transitions, 4048 flow [2024-11-09 10:55:05,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 327 transitions, 3978 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-09 10:55:05,099 INFO L231 Difference]: Finished difference. Result has 283 places, 276 transitions, 2970 flow [2024-11-09 10:55:05,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2489, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2970, PETRI_PLACES=283, PETRI_TRANSITIONS=276} [2024-11-09 10:55:05,100 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 222 predicate places. [2024-11-09 10:55:05,100 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 276 transitions, 2970 flow [2024-11-09 10:55:05,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:05,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:55:05,100 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] [2024-11-09 10:55:05,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-09 10:55:05,100 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:55:05,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:55:05,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2136447236, now seen corresponding path program 32 times [2024-11-09 10:55:05,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:55:05,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510360263] [2024-11-09 10:55:05,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:55:05,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:55:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:55:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:55:05,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:55:05,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510360263] [2024-11-09 10:55:05,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510360263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:55:05,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:55:05,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:55:05,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520032713] [2024-11-09 10:55:05,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:55:05,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:55:05,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:55:05,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:55:05,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:55:05,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:55:05,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 276 transitions, 2970 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:05,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:55:05,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:55:05,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:55:07,040 INFO L124 PetriNetUnfolderBase]: 4135/7486 cut-off events. [2024-11-09 10:55:07,040 INFO L125 PetriNetUnfolderBase]: For 208124/208605 co-relation queries the response was YES. [2024-11-09 10:55:07,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38574 conditions, 7486 events. 4135/7486 cut-off events. For 208124/208605 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 57370 event pairs, 1791 based on Foata normal form. 54/7286 useless extension candidates. Maximal degree in co-relation 38422. Up to 6025 conditions per place. [2024-11-09 10:55:07,145 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 293 selfloop transitions, 37 changer transitions 3/340 dead transitions. [2024-11-09 10:55:07,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 340 transitions, 4493 flow [2024-11-09 10:55:07,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:55:07,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:55:07,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2024-11-09 10:55:07,146 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-11-09 10:55:07,146 INFO L175 Difference]: Start difference. First operand has 283 places, 276 transitions, 2970 flow. Second operand 11 states and 284 transitions. [2024-11-09 10:55:07,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 340 transitions, 4493 flow [2024-11-09 10:55:07,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 340 transitions, 4157 flow, removed 151 selfloop flow, removed 5 redundant places. [2024-11-09 10:55:07,533 INFO L231 Difference]: Finished difference. Result has 292 places, 285 transitions, 3079 flow [2024-11-09 10:55:07,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3079, PETRI_PLACES=292, PETRI_TRANSITIONS=285} [2024-11-09 10:55:07,534 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 231 predicate places. [2024-11-09 10:55:07,534 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 285 transitions, 3079 flow [2024-11-09 10:55:07,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:07,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:55:07,534 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] [2024-11-09 10:55:07,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-09 10:55:07,534 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:55:07,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:55:07,535 INFO L85 PathProgramCache]: Analyzing trace with hash 575049204, now seen corresponding path program 33 times [2024-11-09 10:55:07,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:55:07,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663684701] [2024-11-09 10:55:07,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:55:07,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:55:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:55:08,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:55:08,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:55:08,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663684701] [2024-11-09 10:55:08,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663684701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:55:08,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:55:08,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:55:08,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006617163] [2024-11-09 10:55:08,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:55:08,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:55:08,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:55:08,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:55:08,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:55:08,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:55:08,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 285 transitions, 3079 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:08,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:55:08,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:55:08,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:55:09,545 INFO L124 PetriNetUnfolderBase]: 4196/7596 cut-off events. [2024-11-09 10:55:09,545 INFO L125 PetriNetUnfolderBase]: For 217937/218452 co-relation queries the response was YES. [2024-11-09 10:55:09,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38927 conditions, 7596 events. 4196/7596 cut-off events. For 217937/218452 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 58414 event pairs, 1881 based on Foata normal form. 68/7406 useless extension candidates. Maximal degree in co-relation 38770. Up to 6264 conditions per place. [2024-11-09 10:55:09,628 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 287 selfloop transitions, 36 changer transitions 4/334 dead transitions. [2024-11-09 10:55:09,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 334 transitions, 4221 flow [2024-11-09 10:55:09,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:55:09,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:55:09,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 271 transitions. [2024-11-09 10:55:09,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3973607038123167 [2024-11-09 10:55:09,629 INFO L175 Difference]: Start difference. First operand has 292 places, 285 transitions, 3079 flow. Second operand 11 states and 271 transitions. [2024-11-09 10:55:09,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 334 transitions, 4221 flow [2024-11-09 10:55:10,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 334 transitions, 3919 flow, removed 134 selfloop flow, removed 5 redundant places. [2024-11-09 10:55:10,090 INFO L231 Difference]: Finished difference. Result has 300 places, 291 transitions, 3034 flow [2024-11-09 10:55:10,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2777, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3034, PETRI_PLACES=300, PETRI_TRANSITIONS=291} [2024-11-09 10:55:10,090 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 239 predicate places. [2024-11-09 10:55:10,090 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 291 transitions, 3034 flow [2024-11-09 10:55:10,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:10,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:55:10,090 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] [2024-11-09 10:55:10,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-09 10:55:10,091 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:55:10,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:55:10,091 INFO L85 PathProgramCache]: Analyzing trace with hash 314059034, now seen corresponding path program 34 times [2024-11-09 10:55:10,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:55:10,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335635127] [2024-11-09 10:55:10,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:55:10,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:55:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:55:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:55:10,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:55:10,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335635127] [2024-11-09 10:55:10,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335635127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:55:10,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:55:10,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:55:10,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429058142] [2024-11-09 10:55:10,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:55:10,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:55:10,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:55:10,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:55:10,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:55:10,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:55:10,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 291 transitions, 3034 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:10,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:55:10,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:55:10,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:55:12,200 INFO L124 PetriNetUnfolderBase]: 4347/7840 cut-off events. [2024-11-09 10:55:12,200 INFO L125 PetriNetUnfolderBase]: For 219562/219853 co-relation queries the response was YES. [2024-11-09 10:55:12,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39866 conditions, 7840 events. 4347/7840 cut-off events. For 219562/219853 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 60461 event pairs, 1923 based on Foata normal form. 74/7655 useless extension candidates. Maximal degree in co-relation 39705. Up to 6288 conditions per place. [2024-11-09 10:55:12,300 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 298 selfloop transitions, 42 changer transitions 3/350 dead transitions. [2024-11-09 10:55:12,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 350 transitions, 4524 flow [2024-11-09 10:55:12,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:55:12,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:55:12,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-11-09 10:55:12,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-11-09 10:55:12,301 INFO L175 Difference]: Start difference. First operand has 300 places, 291 transitions, 3034 flow. Second operand 11 states and 282 transitions. [2024-11-09 10:55:12,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 350 transitions, 4524 flow [2024-11-09 10:55:12,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 350 transitions, 4306 flow, removed 89 selfloop flow, removed 6 redundant places. [2024-11-09 10:55:12,812 INFO L231 Difference]: Finished difference. Result has 307 places, 298 transitions, 3267 flow [2024-11-09 10:55:12,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3267, PETRI_PLACES=307, PETRI_TRANSITIONS=298} [2024-11-09 10:55:12,812 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 246 predicate places. [2024-11-09 10:55:12,813 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 298 transitions, 3267 flow [2024-11-09 10:55:12,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:12,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:55:12,813 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] [2024-11-09 10:55:12,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-09 10:55:12,813 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:55:12,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:55:12,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1089193844, now seen corresponding path program 35 times [2024-11-09 10:55:12,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:55:12,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538985274] [2024-11-09 10:55:12,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:55:12,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:55:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:55:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:55:13,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:55:13,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538985274] [2024-11-09 10:55:13,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538985274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:55:13,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:55:13,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:55:13,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676456161] [2024-11-09 10:55:13,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:55:13,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:55:13,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:55:13,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:55:13,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:55:13,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:55:13,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 298 transitions, 3267 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:13,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:55:13,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:55:13,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:55:14,970 INFO L124 PetriNetUnfolderBase]: 4410/7967 cut-off events. [2024-11-09 10:55:14,970 INFO L125 PetriNetUnfolderBase]: For 252973/253274 co-relation queries the response was YES. [2024-11-09 10:55:15,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41686 conditions, 7967 events. 4410/7967 cut-off events. For 252973/253274 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 61907 event pairs, 1995 based on Foata normal form. 63/7767 useless extension candidates. Maximal degree in co-relation 41521. Up to 6521 conditions per place. [2024-11-09 10:55:15,071 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 312 selfloop transitions, 35 changer transitions 3/357 dead transitions. [2024-11-09 10:55:15,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 357 transitions, 4700 flow [2024-11-09 10:55:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:55:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:55:15,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-11-09 10:55:15,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4120234604105572 [2024-11-09 10:55:15,072 INFO L175 Difference]: Start difference. First operand has 307 places, 298 transitions, 3267 flow. Second operand 11 states and 281 transitions. [2024-11-09 10:55:15,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 357 transitions, 4700 flow [2024-11-09 10:55:15,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 357 transitions, 4370 flow, removed 145 selfloop flow, removed 6 redundant places. [2024-11-09 10:55:15,713 INFO L231 Difference]: Finished difference. Result has 314 places, 303 transitions, 3251 flow [2024-11-09 10:55:15,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2941, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3251, PETRI_PLACES=314, PETRI_TRANSITIONS=303} [2024-11-09 10:55:15,713 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 253 predicate places. [2024-11-09 10:55:15,714 INFO L471 AbstractCegarLoop]: Abstraction has has 314 places, 303 transitions, 3251 flow [2024-11-09 10:55:15,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:15,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:55:15,714 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] [2024-11-09 10:55:15,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-09 10:55:15,714 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:55:15,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:55:15,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1039826156, now seen corresponding path program 36 times [2024-11-09 10:55:15,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:55:15,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226870461] [2024-11-09 10:55:15,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:55:15,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:55:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:55:16,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:55:16,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:55:16,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226870461] [2024-11-09 10:55:16,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226870461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:55:16,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:55:16,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:55:16,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563395337] [2024-11-09 10:55:16,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:55:16,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:55:16,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:55:16,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:55:16,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:55:16,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:55:16,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 303 transitions, 3251 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:16,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:55:16,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:55:16,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:55:17,898 INFO L124 PetriNetUnfolderBase]: 4410/7956 cut-off events. [2024-11-09 10:55:17,898 INFO L125 PetriNetUnfolderBase]: For 241742/242035 co-relation queries the response was YES. [2024-11-09 10:55:17,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40541 conditions, 7956 events. 4410/7956 cut-off events. For 241742/242035 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 61751 event pairs, 2019 based on Foata normal form. 69/7758 useless extension candidates. Maximal degree in co-relation 40372. Up to 6598 conditions per place. [2024-11-09 10:55:17,992 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 308 selfloop transitions, 34 changer transitions 3/352 dead transitions. [2024-11-09 10:55:17,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 352 transitions, 4434 flow [2024-11-09 10:55:17,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:55:17,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:55:17,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-11-09 10:55:17,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-11-09 10:55:17,994 INFO L175 Difference]: Start difference. First operand has 314 places, 303 transitions, 3251 flow. Second operand 11 states and 272 transitions. [2024-11-09 10:55:17,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 352 transitions, 4434 flow [2024-11-09 10:55:18,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 352 transitions, 4187 flow, removed 105 selfloop flow, removed 6 redundant places. [2024-11-09 10:55:18,504 INFO L231 Difference]: Finished difference. Result has 320 places, 306 transitions, 3157 flow [2024-11-09 10:55:18,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3004, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3157, PETRI_PLACES=320, PETRI_TRANSITIONS=306} [2024-11-09 10:55:18,505 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 259 predicate places. [2024-11-09 10:55:18,505 INFO L471 AbstractCegarLoop]: Abstraction has has 320 places, 306 transitions, 3157 flow [2024-11-09 10:55:18,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:18,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:55:18,505 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] [2024-11-09 10:55:18,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-11-09 10:55:18,506 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:55:18,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:55:18,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1453051924, now seen corresponding path program 37 times [2024-11-09 10:55:18,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:55:18,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162454868] [2024-11-09 10:55:18,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:55:18,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:55:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:55:19,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:55:19,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:55:19,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162454868] [2024-11-09 10:55:19,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162454868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:55:19,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:55:19,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:55:19,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307169159] [2024-11-09 10:55:19,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:55:19,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:55:19,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:55:19,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:55:19,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:55:19,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:55:19,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 306 transitions, 3157 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:19,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:55:19,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:55:19,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:55:20,728 INFO L124 PetriNetUnfolderBase]: 4473/8082 cut-off events. [2024-11-09 10:55:20,728 INFO L125 PetriNetUnfolderBase]: For 243801/244074 co-relation queries the response was YES. [2024-11-09 10:55:20,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41044 conditions, 8082 events. 4473/8082 cut-off events. For 243801/244074 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 62915 event pairs, 2069 based on Foata normal form. 58/7877 useless extension candidates. Maximal degree in co-relation 40872. Up to 6613 conditions per place. [2024-11-09 10:55:20,848 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 318 selfloop transitions, 36 changer transitions 3/364 dead transitions. [2024-11-09 10:55:20,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 364 transitions, 4619 flow [2024-11-09 10:55:20,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:55:20,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:55:20,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-11-09 10:55:20,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4120234604105572 [2024-11-09 10:55:20,849 INFO L175 Difference]: Start difference. First operand has 320 places, 306 transitions, 3157 flow. Second operand 11 states and 281 transitions. [2024-11-09 10:55:20,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 364 transitions, 4619 flow [2024-11-09 10:55:21,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 364 transitions, 4493 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-11-09 10:55:21,501 INFO L231 Difference]: Finished difference. Result has 325 places, 311 transitions, 3355 flow [2024-11-09 10:55:21,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3031, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3355, PETRI_PLACES=325, PETRI_TRANSITIONS=311} [2024-11-09 10:55:21,501 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 264 predicate places. [2024-11-09 10:55:21,501 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 311 transitions, 3355 flow [2024-11-09 10:55:21,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:21,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:55:21,502 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] [2024-11-09 10:55:21,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-11-09 10:55:21,502 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:55:21,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:55:21,502 INFO L85 PathProgramCache]: Analyzing trace with hash 477158746, now seen corresponding path program 38 times [2024-11-09 10:55:21,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:55:21,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172085597] [2024-11-09 10:55:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:55:21,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:55:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:55:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:55:22,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:55:22,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172085597] [2024-11-09 10:55:22,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172085597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:55:22,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:55:22,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:55:22,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476261125] [2024-11-09 10:55:22,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:55:22,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:55:22,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:55:22,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:55:22,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:55:22,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:55:22,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 311 transitions, 3355 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:22,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:55:22,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:55:22,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:55:23,614 INFO L124 PetriNetUnfolderBase]: 4473/8090 cut-off events. [2024-11-09 10:55:23,614 INFO L125 PetriNetUnfolderBase]: For 256352/256625 co-relation queries the response was YES. [2024-11-09 10:55:23,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41403 conditions, 8090 events. 4473/8090 cut-off events. For 256352/256625 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 63071 event pairs, 2064 based on Foata normal form. 64/7890 useless extension candidates. Maximal degree in co-relation 41228. Up to 6651 conditions per place. [2024-11-09 10:55:23,730 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 316 selfloop transitions, 37 changer transitions 4/364 dead transitions. [2024-11-09 10:55:23,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 364 transitions, 4590 flow [2024-11-09 10:55:23,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:55:23,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:55:23,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 278 transitions. [2024-11-09 10:55:23,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-11-09 10:55:23,731 INFO L175 Difference]: Start difference. First operand has 325 places, 311 transitions, 3355 flow. Second operand 11 states and 278 transitions. [2024-11-09 10:55:23,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 364 transitions, 4590 flow [2024-11-09 10:55:24,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 364 transitions, 4328 flow, removed 112 selfloop flow, removed 6 redundant places. [2024-11-09 10:55:24,275 INFO L231 Difference]: Finished difference. Result has 331 places, 315 transitions, 3262 flow [2024-11-09 10:55:24,275 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3093, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3262, PETRI_PLACES=331, PETRI_TRANSITIONS=315} [2024-11-09 10:55:24,275 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 270 predicate places. [2024-11-09 10:55:24,275 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 315 transitions, 3262 flow [2024-11-09 10:55:24,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:24,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:55:24,276 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] [2024-11-09 10:55:24,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-11-09 10:55:24,276 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:55:24,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:55:24,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1348185320, now seen corresponding path program 39 times [2024-11-09 10:55:24,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:55:24,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205247538] [2024-11-09 10:55:24,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:55:24,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:55:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:55:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:55:24,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:55:24,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205247538] [2024-11-09 10:55:24,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205247538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:55:24,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:55:24,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:55:24,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108029358] [2024-11-09 10:55:24,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:55:24,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:55:24,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:55:24,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:55:24,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:55:24,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:55:24,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 315 transitions, 3262 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:24,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:55:24,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:55:24,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:55:26,492 INFO L124 PetriNetUnfolderBase]: 4509/8156 cut-off events. [2024-11-09 10:55:26,492 INFO L125 PetriNetUnfolderBase]: For 241122/241419 co-relation queries the response was YES. [2024-11-09 10:55:26,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40776 conditions, 8156 events. 4509/8156 cut-off events. For 241122/241419 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 63718 event pairs, 2122 based on Foata normal form. 80/7962 useless extension candidates. Maximal degree in co-relation 40598. Up to 6782 conditions per place. [2024-11-09 10:55:26,614 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 314 selfloop transitions, 37 changer transitions 3/361 dead transitions. [2024-11-09 10:55:26,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 361 transitions, 4392 flow [2024-11-09 10:55:26,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:55:26,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:55:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 271 transitions. [2024-11-09 10:55:26,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3973607038123167 [2024-11-09 10:55:26,615 INFO L175 Difference]: Start difference. First operand has 331 places, 315 transitions, 3262 flow. Second operand 11 states and 271 transitions. [2024-11-09 10:55:26,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 361 transitions, 4392 flow [2024-11-09 10:55:27,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 361 transitions, 4226 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-11-09 10:55:27,313 INFO L231 Difference]: Finished difference. Result has 335 places, 318 transitions, 3262 flow [2024-11-09 10:55:27,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3096, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3262, PETRI_PLACES=335, PETRI_TRANSITIONS=318} [2024-11-09 10:55:27,314 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 274 predicate places. [2024-11-09 10:55:27,314 INFO L471 AbstractCegarLoop]: Abstraction has has 335 places, 318 transitions, 3262 flow [2024-11-09 10:55:27,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:27,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:55:27,314 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] [2024-11-09 10:55:27,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-11-09 10:55:27,314 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 10:55:27,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:55:27,315 INFO L85 PathProgramCache]: Analyzing trace with hash -904527590, now seen corresponding path program 40 times [2024-11-09 10:55:27,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:55:27,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089092376] [2024-11-09 10:55:27,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:55:27,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:55:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:55:27,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:55:27,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:55:27,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089092376] [2024-11-09 10:55:27,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089092376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:55:27,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:55:27,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 10:55:27,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532308775] [2024-11-09 10:55:27,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:55:27,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:55:27,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:55:27,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:55:27,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:55:27,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2024-11-09 10:55:27,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 318 transitions, 3262 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:55:27,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:55:27,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2024-11-09 10:55:27,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand