./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:56:20,099 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:56:20,163 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:56:20,167 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:56:20,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:56:20,200 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:56:20,201 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:56:20,201 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:56:20,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:56:20,202 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:56:20,202 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:56:20,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:56:20,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:56:20,208 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:56:20,208 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:56:20,209 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:56:20,209 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:56:20,209 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:56:20,209 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:56:20,210 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:56:20,210 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:56:20,210 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:56:20,211 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:56:20,211 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:56:20,211 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:56:20,211 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:56:20,212 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:56:20,212 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:56:20,212 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:56:20,213 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:56:20,213 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:56:20,213 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:56:20,213 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:56:20,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:56:20,214 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:56:20,215 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:56:20,215 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:56:20,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:56:20,216 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:56:20,216 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:56:20,217 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:56:20,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:56:20,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 [2024-11-19 09:56:20,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:56:20,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:56:20,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:56:20,495 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:56:20,495 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:56:20,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2024-11-19 09:56:21,923 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:56:22,168 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:56:22,171 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2024-11-19 09:56:22,186 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/272331079/ea199c46e1784c7f9c1cc7c415451ef4/FLAGd2778bbef [2024-11-19 09:56:22,497 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/272331079/ea199c46e1784c7f9c1cc7c415451ef4 [2024-11-19 09:56:22,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:56:22,500 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:56:22,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:56:22,501 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:56:22,512 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:56:22,513 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:56:22" (1/1) ... [2024-11-19 09:56:22,514 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a2a17f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:56:22, skipping insertion in model container [2024-11-19 09:56:22,514 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:56:22" (1/1) ... [2024-11-19 09:56:22,563 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:56:22,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:56:22,937 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:56:23,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:56:23,048 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:56:23,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:56:23 WrapperNode [2024-11-19 09:56:23,049 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:56:23,050 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:56:23,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:56:23,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:56:23,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:56:23" (1/1) ... [2024-11-19 09:56:23,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:56:23" (1/1) ... [2024-11-19 09:56:23,102 INFO L138 Inliner]: procedures = 168, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 151 [2024-11-19 09:56:23,103 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:56:23,104 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:56:23,104 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:56:23,104 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:56:23,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:56:23" (1/1) ... [2024-11-19 09:56:23,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:56:23" (1/1) ... [2024-11-19 09:56:23,122 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:56:23" (1/1) ... [2024-11-19 09:56:23,137 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 1, 12, 8]. 52 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [2, 1, 10, 8]. The 1 writes are split as follows [0, 0, 1, 0]. [2024-11-19 09:56:23,137 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:56:23" (1/1) ... [2024-11-19 09:56:23,137 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:56:23" (1/1) ... [2024-11-19 09:56:23,145 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:56:23" (1/1) ... [2024-11-19 09:56:23,148 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:56:23" (1/1) ... [2024-11-19 09:56:23,151 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:56:23" (1/1) ... [2024-11-19 09:56:23,152 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:56:23" (1/1) ... [2024-11-19 09:56:23,157 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:56:23,158 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:56:23,158 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:56:23,158 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:56:23,159 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:56:23" (1/1) ... [2024-11-19 09:56:23,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:56:23,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:56:23,198 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) [2024-11-19 09:56:23,204 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 [2024-11-19 09:56:23,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 09:56:23,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 09:56:23,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 09:56:23,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 09:56:23,253 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-19 09:56:23,254 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-19 09:56:23,254 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-19 09:56:23,254 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-19 09:56:23,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 09:56:23,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 09:56:23,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 09:56:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 09:56:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 09:56:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:56:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-19 09:56:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-19 09:56:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-19 09:56:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-19 09:56:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:56:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 09:56:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 09:56:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 09:56:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 09:56:23,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:56:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:56:23,262 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:56:23,449 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:56:23,452 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:56:23,753 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:56:23,753 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:56:23,934 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:56:23,938 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 09:56:23,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:56:23 BoogieIcfgContainer [2024-11-19 09:56:23,939 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:56:23,941 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:56:23,941 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:56:23,945 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:56:23,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:56:22" (1/3) ... [2024-11-19 09:56:23,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45684aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:56:23, skipping insertion in model container [2024-11-19 09:56:23,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:56:23" (2/3) ... [2024-11-19 09:56:23,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45684aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:56:23, skipping insertion in model container [2024-11-19 09:56:23,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:56:23" (3/3) ... [2024-11-19 09:56:23,948 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2024-11-19 09:56:23,965 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:56:23,965 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-19 09:56:23,965 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:56:24,028 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 09:56:24,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 66 transitions, 146 flow [2024-11-19 09:56:24,102 INFO L124 PetriNetUnfolderBase]: 12/64 cut-off events. [2024-11-19 09:56:24,102 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:56:24,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 64 events. 12/64 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 193 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2024-11-19 09:56:24,109 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 66 transitions, 146 flow [2024-11-19 09:56:24,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 63 transitions, 138 flow [2024-11-19 09:56:24,122 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:56:24,129 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;@2b58b199, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:56:24,129 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-19 09:56:24,137 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:56:24,138 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2024-11-19 09:56:24,138 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:56:24,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:24,139 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:56:24,139 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:24,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:24,144 INFO L85 PathProgramCache]: Analyzing trace with hash -17531593, now seen corresponding path program 1 times [2024-11-19 09:56:24,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:24,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863160121] [2024-11-19 09:56:24,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:24,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:24,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:24,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863160121] [2024-11-19 09:56:24,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863160121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:56:24,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:56:24,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:56:24,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613908770] [2024-11-19 09:56:24,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:56:24,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:56:24,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:24,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:56:24,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:56:24,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 66 [2024-11-19 09:56:24,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-11-19 09:56:24,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:24,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 66 [2024-11-19 09:56:24,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:56:24,938 INFO L124 PetriNetUnfolderBase]: 571/1094 cut-off events. [2024-11-19 09:56:24,939 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-19 09:56:24,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2049 conditions, 1094 events. 571/1094 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6028 event pairs, 437 based on Foata normal form. 154/1136 useless extension candidates. Maximal degree in co-relation 1967. Up to 912 conditions per place. [2024-11-19 09:56:24,953 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 32 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2024-11-19 09:56:24,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 182 flow [2024-11-19 09:56:24,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:56:24,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:56:24,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-11-19 09:56:24,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2024-11-19 09:56:24,970 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 138 flow. Second operand 3 states and 104 transitions. [2024-11-19 09:56:24,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 182 flow [2024-11-19 09:56:24,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 174 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:56:24,978 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 110 flow [2024-11-19 09:56:24,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2024-11-19 09:56:24,986 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2024-11-19 09:56:24,987 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 110 flow [2024-11-19 09:56:24,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-11-19 09:56:24,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:24,987 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:56:24,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:56:24,988 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:24,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:24,990 INFO L85 PathProgramCache]: Analyzing trace with hash -17531592, now seen corresponding path program 1 times [2024-11-19 09:56:24,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:24,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488894670] [2024-11-19 09:56:24,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:24,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:25,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:25,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:25,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488894670] [2024-11-19 09:56:25,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488894670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:56:25,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:56:25,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:56:25,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226716937] [2024-11-19 09:56:25,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:56:25,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:56:25,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:25,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:56:25,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:56:25,380 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-19 09:56:25,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-11-19 09:56:25,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:25,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-19 09:56:25,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:56:25,649 INFO L124 PetriNetUnfolderBase]: 1024/1958 cut-off events. [2024-11-19 09:56:25,650 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-19 09:56:25,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3583 conditions, 1958 events. 1024/1958 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 11144 event pairs, 370 based on Foata normal form. 0/1779 useless extension candidates. Maximal degree in co-relation 3577. Up to 901 conditions per place. [2024-11-19 09:56:25,661 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 59 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-11-19 09:56:25,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 289 flow [2024-11-19 09:56:25,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:56:25,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:56:25,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-11-19 09:56:25,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-11-19 09:56:25,665 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 110 flow. Second operand 3 states and 129 transitions. [2024-11-19 09:56:25,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 289 flow [2024-11-19 09:56:25,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 79 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:56:25,669 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 123 flow [2024-11-19 09:56:25,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2024-11-19 09:56:25,670 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -5 predicate places. [2024-11-19 09:56:25,671 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 123 flow [2024-11-19 09:56:25,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-11-19 09:56:25,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:25,671 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:56:25,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:56:25,671 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:25,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:25,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1702824681, now seen corresponding path program 1 times [2024-11-19 09:56:25,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:25,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270332435] [2024-11-19 09:56:25,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:25,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:25,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:25,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270332435] [2024-11-19 09:56:25,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270332435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:56:25,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:56:25,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:56:25,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568376437] [2024-11-19 09:56:25,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:56:25,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:56:25,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:25,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:56:25,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:56:25,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 66 [2024-11-19 09:56:25,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:56:25,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:25,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 66 [2024-11-19 09:56:25,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:56:26,121 INFO L124 PetriNetUnfolderBase]: 1068/1989 cut-off events. [2024-11-19 09:56:26,122 INFO L125 PetriNetUnfolderBase]: For 51/53 co-relation queries the response was YES. [2024-11-19 09:56:26,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3818 conditions, 1989 events. 1068/1989 cut-off events. For 51/53 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 11080 event pairs, 822 based on Foata normal form. 0/1808 useless extension candidates. Maximal degree in co-relation 3810. Up to 1678 conditions per place. [2024-11-19 09:56:26,134 INFO L140 encePairwiseOnDemand]: 64/66 looper letters, 34 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2024-11-19 09:56:26,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 187 flow [2024-11-19 09:56:26,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:56:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:56:26,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-11-19 09:56:26,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2024-11-19 09:56:26,137 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 123 flow. Second operand 3 states and 98 transitions. [2024-11-19 09:56:26,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 187 flow [2024-11-19 09:56:26,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:56:26,140 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 117 flow [2024-11-19 09:56:26,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2024-11-19 09:56:26,141 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2024-11-19 09:56:26,142 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 117 flow [2024-11-19 09:56:26,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:56:26,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:26,142 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:56:26,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:56:26,143 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:26,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:26,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1703780011, now seen corresponding path program 1 times [2024-11-19 09:56:26,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:26,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502329058] [2024-11-19 09:56:26,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:26,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:26,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:26,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:26,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502329058] [2024-11-19 09:56:26,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502329058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:56:26,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:56:26,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:56:26,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676658107] [2024-11-19 09:56:26,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:56:26,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:56:26,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:26,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:56:26,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:56:26,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-19 09:56:26,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:56:26,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:26,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-19 09:56:26,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:56:26,494 INFO L124 PetriNetUnfolderBase]: 739/1428 cut-off events. [2024-11-19 09:56:26,495 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-11-19 09:56:26,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 1428 events. 739/1428 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7489 event pairs, 204 based on Foata normal form. 23/1363 useless extension candidates. Maximal degree in co-relation 2683. Up to 770 conditions per place. [2024-11-19 09:56:26,503 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 52 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-11-19 09:56:26,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 71 transitions, 270 flow [2024-11-19 09:56:26,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:56:26,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:56:26,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-19 09:56:26,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6262626262626263 [2024-11-19 09:56:26,507 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 117 flow. Second operand 3 states and 124 transitions. [2024-11-19 09:56:26,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 71 transitions, 270 flow [2024-11-19 09:56:26,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:56:26,511 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 124 flow [2024-11-19 09:56:26,511 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-11-19 09:56:26,512 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -5 predicate places. [2024-11-19 09:56:26,513 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 124 flow [2024-11-19 09:56:26,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:56:26,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:26,514 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:56:26,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:56:26,515 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:26,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash 329932780, now seen corresponding path program 1 times [2024-11-19 09:56:26,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:26,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547802149] [2024-11-19 09:56:26,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:26,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:26,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:26,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547802149] [2024-11-19 09:56:26,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547802149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:56:26,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:56:26,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:56:26,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199490382] [2024-11-19 09:56:26,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:56:26,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:56:26,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:26,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:56:26,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:56:26,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-19 09:56:26,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-11-19 09:56:26,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:26,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-19 09:56:26,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:56:26,812 INFO L124 PetriNetUnfolderBase]: 1181/2256 cut-off events. [2024-11-19 09:56:26,812 INFO L125 PetriNetUnfolderBase]: For 224/242 co-relation queries the response was YES. [2024-11-19 09:56:26,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4406 conditions, 2256 events. 1181/2256 cut-off events. For 224/242 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 13592 event pairs, 565 based on Foata normal form. 24/2104 useless extension candidates. Maximal degree in co-relation 4395. Up to 1235 conditions per place. [2024-11-19 09:56:26,825 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 56 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-19 09:56:26,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 75 transitions, 298 flow [2024-11-19 09:56:26,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:56:26,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:56:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-11-19 09:56:26,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6414141414141414 [2024-11-19 09:56:26,827 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 124 flow. Second operand 3 states and 127 transitions. [2024-11-19 09:56:26,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 75 transitions, 298 flow [2024-11-19 09:56:26,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 75 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:56:26,831 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 132 flow [2024-11-19 09:56:26,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-11-19 09:56:26,831 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2024-11-19 09:56:26,832 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 132 flow [2024-11-19 09:56:26,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-11-19 09:56:26,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:26,832 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:56:26,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:56:26,832 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:26,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:26,833 INFO L85 PathProgramCache]: Analyzing trace with hash -529581639, now seen corresponding path program 1 times [2024-11-19 09:56:26,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:26,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391060819] [2024-11-19 09:56:26,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:26,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:26,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:26,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391060819] [2024-11-19 09:56:26,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391060819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:56:26,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:56:26,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:56:26,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876371062] [2024-11-19 09:56:26,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:56:26,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:56:26,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:26,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:56:26,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:56:26,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-19 09:56:26,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:56:26,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:26,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-19 09:56:26,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:56:27,113 INFO L124 PetriNetUnfolderBase]: 1071/2133 cut-off events. [2024-11-19 09:56:27,114 INFO L125 PetriNetUnfolderBase]: For 202/218 co-relation queries the response was YES. [2024-11-19 09:56:27,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4230 conditions, 2133 events. 1071/2133 cut-off events. For 202/218 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12150 event pairs, 502 based on Foata normal form. 47/2072 useless extension candidates. Maximal degree in co-relation 4219. Up to 903 conditions per place. [2024-11-19 09:56:27,126 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 53 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2024-11-19 09:56:27,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 73 transitions, 302 flow [2024-11-19 09:56:27,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:56:27,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:56:27,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-19 09:56:27,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2024-11-19 09:56:27,128 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 132 flow. Second operand 3 states and 123 transitions. [2024-11-19 09:56:27,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 73 transitions, 302 flow [2024-11-19 09:56:27,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 73 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:56:27,130 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 145 flow [2024-11-19 09:56:27,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-11-19 09:56:27,131 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -2 predicate places. [2024-11-19 09:56:27,131 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 145 flow [2024-11-19 09:56:27,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:56:27,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:27,131 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:56:27,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:56:27,132 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:27,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:27,133 INFO L85 PathProgramCache]: Analyzing trace with hash 960948998, now seen corresponding path program 1 times [2024-11-19 09:56:27,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:27,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19987131] [2024-11-19 09:56:27,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:27,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:27,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:27,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19987131] [2024-11-19 09:56:27,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19987131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:56:27,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:56:27,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:56:27,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759903191] [2024-11-19 09:56:27,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:56:27,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:56:27,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:27,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:56:27,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:56:27,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-19 09:56:27,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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) [2024-11-19 09:56:27,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:27,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-19 09:56:27,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:56:27,619 INFO L124 PetriNetUnfolderBase]: 1069/2029 cut-off events. [2024-11-19 09:56:27,619 INFO L125 PetriNetUnfolderBase]: For 304/317 co-relation queries the response was YES. [2024-11-19 09:56:27,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4226 conditions, 2029 events. 1069/2029 cut-off events. For 304/317 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11243 event pairs, 470 based on Foata normal form. 0/1881 useless extension candidates. Maximal degree in co-relation 4213. Up to 1334 conditions per place. [2024-11-19 09:56:27,629 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 87 selfloop transitions, 7 changer transitions 0/110 dead transitions. [2024-11-19 09:56:27,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 110 transitions, 469 flow [2024-11-19 09:56:27,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:56:27,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:56:27,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 247 transitions. [2024-11-19 09:56:27,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346320346320347 [2024-11-19 09:56:27,632 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 145 flow. Second operand 7 states and 247 transitions. [2024-11-19 09:56:27,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 110 transitions, 469 flow [2024-11-19 09:56:27,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 110 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:56:27,635 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 187 flow [2024-11-19 09:56:27,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=187, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2024-11-19 09:56:27,635 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 7 predicate places. [2024-11-19 09:56:27,635 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 187 flow [2024-11-19 09:56:27,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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) [2024-11-19 09:56:27,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:27,636 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:56:27,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:56:27,638 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:27,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:27,638 INFO L85 PathProgramCache]: Analyzing trace with hash 301022442, now seen corresponding path program 1 times [2024-11-19 09:56:27,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:27,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908474215] [2024-11-19 09:56:27,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:27,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:27,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:27,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908474215] [2024-11-19 09:56:27,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908474215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:56:27,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:56:27,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:56:27,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906044218] [2024-11-19 09:56:27,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:56:27,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:56:27,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:27,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:56:27,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:56:27,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-19 09:56:27,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-11-19 09:56:27,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:27,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-19 09:56:27,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:56:28,027 INFO L124 PetriNetUnfolderBase]: 1714/3375 cut-off events. [2024-11-19 09:56:28,027 INFO L125 PetriNetUnfolderBase]: For 899/942 co-relation queries the response was YES. [2024-11-19 09:56:28,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7374 conditions, 3375 events. 1714/3375 cut-off events. For 899/942 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 21388 event pairs, 797 based on Foata normal form. 75/3295 useless extension candidates. Maximal degree in co-relation 7357. Up to 1698 conditions per place. [2024-11-19 09:56:28,047 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 69 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-11-19 09:56:28,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 89 transitions, 448 flow [2024-11-19 09:56:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:56:28,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:56:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-11-19 09:56:28,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6414141414141414 [2024-11-19 09:56:28,049 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 187 flow. Second operand 3 states and 127 transitions. [2024-11-19 09:56:28,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 89 transitions, 448 flow [2024-11-19 09:56:28,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 89 transitions, 436 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:56:28,054 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 193 flow [2024-11-19 09:56:28,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-11-19 09:56:28,055 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2024-11-19 09:56:28,055 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 193 flow [2024-11-19 09:56:28,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-11-19 09:56:28,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:28,057 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:56:28,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 09:56:28,057 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:28,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:28,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1172466476, now seen corresponding path program 1 times [2024-11-19 09:56:28,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:28,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335501300] [2024-11-19 09:56:28,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:28,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:28,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:28,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:28,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335501300] [2024-11-19 09:56:28,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335501300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:56:28,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:56:28,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:56:28,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702236738] [2024-11-19 09:56:28,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:56:28,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:56:28,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:28,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:56:28,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:56:28,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-19 09:56:28,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2024-11-19 09:56:28,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:28,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-19 09:56:28,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:56:28,390 INFO L124 PetriNetUnfolderBase]: 1328/2565 cut-off events. [2024-11-19 09:56:28,391 INFO L125 PetriNetUnfolderBase]: For 734/753 co-relation queries the response was YES. [2024-11-19 09:56:28,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5803 conditions, 2565 events. 1328/2565 cut-off events. For 734/753 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 14608 event pairs, 487 based on Foata normal form. 91/2601 useless extension candidates. Maximal degree in co-relation 5785. Up to 1421 conditions per place. [2024-11-19 09:56:28,408 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 54 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2024-11-19 09:56:28,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 356 flow [2024-11-19 09:56:28,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:56:28,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:56:28,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-11-19 09:56:28,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5808080808080808 [2024-11-19 09:56:28,410 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 193 flow. Second operand 3 states and 115 transitions. [2024-11-19 09:56:28,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 356 flow [2024-11-19 09:56:28,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 347 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-19 09:56:28,415 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 200 flow [2024-11-19 09:56:28,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-11-19 09:56:28,417 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-11-19 09:56:28,418 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 200 flow [2024-11-19 09:56:28,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2024-11-19 09:56:28,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:28,419 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:56:28,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 09:56:28,419 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:28,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:28,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1637209546, now seen corresponding path program 1 times [2024-11-19 09:56:28,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:28,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112187492] [2024-11-19 09:56:28,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:28,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:28,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:28,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112187492] [2024-11-19 09:56:28,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112187492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:56:28,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:56:28,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:56:28,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743927105] [2024-11-19 09:56:28,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:56:28,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:56:28,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:28,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:56:28,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:56:28,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-19 09:56:28,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-11-19 09:56:28,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:28,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-19 09:56:28,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:56:28,702 INFO L124 PetriNetUnfolderBase]: 804/1812 cut-off events. [2024-11-19 09:56:28,702 INFO L125 PetriNetUnfolderBase]: For 678/678 co-relation queries the response was YES. [2024-11-19 09:56:28,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4147 conditions, 1812 events. 804/1812 cut-off events. For 678/678 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 9897 event pairs, 255 based on Foata normal form. 92/1855 useless extension candidates. Maximal degree in co-relation 4129. Up to 821 conditions per place. [2024-11-19 09:56:28,742 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 48 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2024-11-19 09:56:28,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 352 flow [2024-11-19 09:56:28,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:56:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:56:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-19 09:56:28,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5707070707070707 [2024-11-19 09:56:28,744 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 200 flow. Second operand 3 states and 113 transitions. [2024-11-19 09:56:28,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 352 flow [2024-11-19 09:56:28,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:56:28,748 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 202 flow [2024-11-19 09:56:28,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-11-19 09:56:28,752 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-11-19 09:56:28,753 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 202 flow [2024-11-19 09:56:28,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-11-19 09:56:28,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:28,754 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:56:28,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 09:56:28,755 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:28,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:28,755 INFO L85 PathProgramCache]: Analyzing trace with hash -956769914, now seen corresponding path program 1 times [2024-11-19 09:56:28,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:28,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378611587] [2024-11-19 09:56:28,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:28,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:29,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:29,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:29,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378611587] [2024-11-19 09:56:29,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378611587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:56:29,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:56:29,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:56:29,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323358439] [2024-11-19 09:56:29,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:56:29,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:56:29,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:29,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:56:29,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:56:29,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-19 09:56:29,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-11-19 09:56:29,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:29,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-19 09:56:29,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:56:29,421 INFO L124 PetriNetUnfolderBase]: 1473/3155 cut-off events. [2024-11-19 09:56:29,421 INFO L125 PetriNetUnfolderBase]: For 1353/1358 co-relation queries the response was YES. [2024-11-19 09:56:29,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7579 conditions, 3155 events. 1473/3155 cut-off events. For 1353/1358 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 17799 event pairs, 766 based on Foata normal form. 3/3018 useless extension candidates. Maximal degree in co-relation 7561. Up to 1308 conditions per place. [2024-11-19 09:56:29,436 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 90 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-11-19 09:56:29,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 111 transitions, 578 flow [2024-11-19 09:56:29,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:56:29,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:56:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2024-11-19 09:56:29,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6553030303030303 [2024-11-19 09:56:29,439 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 202 flow. Second operand 4 states and 173 transitions. [2024-11-19 09:56:29,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 111 transitions, 578 flow [2024-11-19 09:56:29,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 111 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:56:29,445 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 214 flow [2024-11-19 09:56:29,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2024-11-19 09:56:29,446 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2024-11-19 09:56:29,447 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 214 flow [2024-11-19 09:56:29,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-11-19 09:56:29,447 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:29,447 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:56:29,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 09:56:29,447 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:29,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:29,448 INFO L85 PathProgramCache]: Analyzing trace with hash -805603092, now seen corresponding path program 1 times [2024-11-19 09:56:29,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:29,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148689459] [2024-11-19 09:56:29,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:29,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:29,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:29,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:29,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148689459] [2024-11-19 09:56:29,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148689459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:56:29,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391299619] [2024-11-19 09:56:29,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:29,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:56:29,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:56:29,512 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) [2024-11-19 09:56:29,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:56:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:29,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 09:56:29,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:56:29,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:56:29,660 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:56:29,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391299619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:56:29,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:56:29,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-19 09:56:29,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460095804] [2024-11-19 09:56:29,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:56:29,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:56:29,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:29,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:56:29,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:56:29,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-19 09:56:29,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-11-19 09:56:29,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:29,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-19 09:56:29,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:56:29,921 INFO L124 PetriNetUnfolderBase]: 1461/3120 cut-off events. [2024-11-19 09:56:29,921 INFO L125 PetriNetUnfolderBase]: For 1223/1232 co-relation queries the response was YES. [2024-11-19 09:56:29,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7366 conditions, 3120 events. 1461/3120 cut-off events. For 1223/1232 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 17943 event pairs, 1152 based on Foata normal form. 13/3026 useless extension candidates. Maximal degree in co-relation 7345. Up to 2476 conditions per place. [2024-11-19 09:56:29,936 INFO L140 encePairwiseOnDemand]: 64/66 looper letters, 38 selfloop transitions, 1 changer transitions 3/59 dead transitions. [2024-11-19 09:56:29,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 59 transitions, 294 flow [2024-11-19 09:56:29,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:56:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:56:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-11-19 09:56:29,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-19 09:56:29,937 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 214 flow. Second operand 3 states and 99 transitions. [2024-11-19 09:56:29,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 59 transitions, 294 flow [2024-11-19 09:56:29,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 59 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:56:29,941 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 204 flow [2024-11-19 09:56:29,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-11-19 09:56:29,942 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2024-11-19 09:56:29,942 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 204 flow [2024-11-19 09:56:29,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-11-19 09:56:29,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:29,943 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:56:29,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 09:56:30,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 09:56:30,147 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:30,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:30,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1359728003, now seen corresponding path program 1 times [2024-11-19 09:56:30,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:30,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524578209] [2024-11-19 09:56:30,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:30,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 09:56:30,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [63497824] [2024-11-19 09:56:30,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:30,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:56:30,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:56:30,201 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) [2024-11-19 09:56:30,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:56:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:30,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:56:30,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:56:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:30,543 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:56:30,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:30,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524578209] [2024-11-19 09:56:30,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 09:56:30,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63497824] [2024-11-19 09:56:30,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63497824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:56:30,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:56:30,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:56:30,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920409828] [2024-11-19 09:56:30,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:56:30,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:56:30,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:30,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:56:30,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:56:30,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-19 09:56:30,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2024-11-19 09:56:30,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:30,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-19 09:56:30,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:56:30,818 INFO L124 PetriNetUnfolderBase]: 1014/2199 cut-off events. [2024-11-19 09:56:30,819 INFO L125 PetriNetUnfolderBase]: For 891/893 co-relation queries the response was YES. [2024-11-19 09:56:30,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5206 conditions, 2199 events. 1014/2199 cut-off events. For 891/893 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 10823 event pairs, 315 based on Foata normal form. 18/2158 useless extension candidates. Maximal degree in co-relation 5183. Up to 1159 conditions per place. [2024-11-19 09:56:30,830 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 58 selfloop transitions, 3 changer transitions 3/81 dead transitions. [2024-11-19 09:56:30,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 81 transitions, 417 flow [2024-11-19 09:56:30,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:56:30,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:56:30,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-11-19 09:56:30,832 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.571969696969697 [2024-11-19 09:56:30,832 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 204 flow. Second operand 4 states and 151 transitions. [2024-11-19 09:56:30,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 81 transitions, 417 flow [2024-11-19 09:56:30,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 81 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:56:30,836 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 213 flow [2024-11-19 09:56:30,836 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2024-11-19 09:56:30,837 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 15 predicate places. [2024-11-19 09:56:30,838 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 213 flow [2024-11-19 09:56:30,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2024-11-19 09:56:30,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:30,838 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] [2024-11-19 09:56:30,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 09:56:31,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 09:56:31,044 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:31,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:31,044 INFO L85 PathProgramCache]: Analyzing trace with hash -504612373, now seen corresponding path program 1 times [2024-11-19 09:56:31,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:31,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633796154] [2024-11-19 09:56:31,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:31,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:31,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:31,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:31,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633796154] [2024-11-19 09:56:31,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633796154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:56:31,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:56:31,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:56:31,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950228264] [2024-11-19 09:56:31,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:56:31,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:56:31,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:31,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:56:31,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:56:32,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-19 09:56:32,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 213 flow. Second operand has 11 states, 11 states have (on average 24.818181818181817) internal successors, (273), 11 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:56:32,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:32,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-19 09:56:32,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:56:33,037 INFO L124 PetriNetUnfolderBase]: 1202/2580 cut-off events. [2024-11-19 09:56:33,037 INFO L125 PetriNetUnfolderBase]: For 1192/1196 co-relation queries the response was YES. [2024-11-19 09:56:33,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6228 conditions, 2580 events. 1202/2580 cut-off events. For 1192/1196 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 13454 event pairs, 384 based on Foata normal form. 0/2506 useless extension candidates. Maximal degree in co-relation 6203. Up to 895 conditions per place. [2024-11-19 09:56:33,051 INFO L140 encePairwiseOnDemand]: 54/66 looper letters, 108 selfloop transitions, 15 changer transitions 14/154 dead transitions. [2024-11-19 09:56:33,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 154 transitions, 829 flow [2024-11-19 09:56:33,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:56:33,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:56:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 401 transitions. [2024-11-19 09:56:33,053 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5063131313131313 [2024-11-19 09:56:33,053 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 213 flow. Second operand 12 states and 401 transitions. [2024-11-19 09:56:33,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 154 transitions, 829 flow [2024-11-19 09:56:33,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 154 transitions, 821 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:56:33,059 INFO L231 Difference]: Finished difference. Result has 85 places, 65 transitions, 299 flow [2024-11-19 09:56:33,059 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=299, PETRI_PLACES=85, PETRI_TRANSITIONS=65} [2024-11-19 09:56:33,060 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 27 predicate places. [2024-11-19 09:56:33,060 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 65 transitions, 299 flow [2024-11-19 09:56:33,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.818181818181817) internal successors, (273), 11 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:56:33,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:33,060 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:56:33,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 09:56:33,061 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:33,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:33,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1189847007, now seen corresponding path program 1 times [2024-11-19 09:56:33,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:33,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89226460] [2024-11-19 09:56:33,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:33,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:33,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:33,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:33,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89226460] [2024-11-19 09:56:33,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89226460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:56:33,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450158545] [2024-11-19 09:56:33,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:33,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:56:33,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:56:33,395 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) [2024-11-19 09:56:33,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:56:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:33,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 09:56:33,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:56:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:33,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:56:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:35,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450158545] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:56:35,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:56:35,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-19 09:56:35,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549327993] [2024-11-19 09:56:35,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:56:35,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 09:56:35,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:35,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 09:56:35,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-19 09:56:35,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 66 [2024-11-19 09:56:35,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 65 transitions, 299 flow. Second operand has 12 states, 12 states have (on average 27.0) internal successors, (324), 12 states have internal predecessors, (324), 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) [2024-11-19 09:56:35,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:35,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 66 [2024-11-19 09:56:35,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:56:35,726 INFO L124 PetriNetUnfolderBase]: 1368/2899 cut-off events. [2024-11-19 09:56:35,726 INFO L125 PetriNetUnfolderBase]: For 1658/1660 co-relation queries the response was YES. [2024-11-19 09:56:35,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7333 conditions, 2899 events. 1368/2899 cut-off events. For 1658/1660 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 14224 event pairs, 842 based on Foata normal form. 54/2873 useless extension candidates. Maximal degree in co-relation 7305. Up to 1611 conditions per place. [2024-11-19 09:56:35,742 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 59 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2024-11-19 09:56:35,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 80 transitions, 483 flow [2024-11-19 09:56:35,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:56:35,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:56:35,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-11-19 09:56:35,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5037878787878788 [2024-11-19 09:56:35,744 INFO L175 Difference]: Start difference. First operand has 85 places, 65 transitions, 299 flow. Second operand 4 states and 133 transitions. [2024-11-19 09:56:35,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 80 transitions, 483 flow [2024-11-19 09:56:35,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 80 transitions, 473 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-19 09:56:35,752 INFO L231 Difference]: Finished difference. Result has 84 places, 63 transitions, 301 flow [2024-11-19 09:56:35,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=84, PETRI_TRANSITIONS=63} [2024-11-19 09:56:35,752 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 26 predicate places. [2024-11-19 09:56:35,753 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 63 transitions, 301 flow [2024-11-19 09:56:35,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.0) internal successors, (324), 12 states have internal predecessors, (324), 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) [2024-11-19 09:56:35,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:35,753 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:56:35,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 09:56:35,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:56:35,954 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:35,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:35,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1361029099, now seen corresponding path program 1 times [2024-11-19 09:56:35,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:35,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138532156] [2024-11-19 09:56:35,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:35,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:56:36,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:36,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138532156] [2024-11-19 09:56:36,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138532156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:56:36,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:56:36,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:56:36,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141832918] [2024-11-19 09:56:36,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:56:36,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:56:36,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:36,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:56:36,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:56:36,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-19 09:56:36,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 63 transitions, 301 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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) [2024-11-19 09:56:36,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:36,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-19 09:56:36,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:56:36,517 INFO L124 PetriNetUnfolderBase]: 1428/2962 cut-off events. [2024-11-19 09:56:36,518 INFO L125 PetriNetUnfolderBase]: For 1975/1975 co-relation queries the response was YES. [2024-11-19 09:56:36,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7624 conditions, 2962 events. 1428/2962 cut-off events. For 1975/1975 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 14419 event pairs, 714 based on Foata normal form. 0/2882 useless extension candidates. Maximal degree in co-relation 7595. Up to 1757 conditions per place. [2024-11-19 09:56:36,533 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 76 selfloop transitions, 11 changer transitions 5/104 dead transitions. [2024-11-19 09:56:36,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 104 transitions, 644 flow [2024-11-19 09:56:36,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:56:36,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:56:36,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-11-19 09:56:36,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5025252525252525 [2024-11-19 09:56:36,535 INFO L175 Difference]: Start difference. First operand has 84 places, 63 transitions, 301 flow. Second operand 6 states and 199 transitions. [2024-11-19 09:56:36,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 104 transitions, 644 flow [2024-11-19 09:56:36,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 104 transitions, 632 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-19 09:56:36,541 INFO L231 Difference]: Finished difference. Result has 85 places, 60 transitions, 312 flow [2024-11-19 09:56:36,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=85, PETRI_TRANSITIONS=60} [2024-11-19 09:56:36,541 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 27 predicate places. [2024-11-19 09:56:36,542 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 60 transitions, 312 flow [2024-11-19 09:56:36,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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) [2024-11-19 09:56:36,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:36,542 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:56:36,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 09:56:36,543 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:36,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:36,543 INFO L85 PathProgramCache]: Analyzing trace with hash -2079303288, now seen corresponding path program 1 times [2024-11-19 09:56:36,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:36,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803856583] [2024-11-19 09:56:36,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:36,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:36,852 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:36,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:36,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803856583] [2024-11-19 09:56:36,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803856583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:56:36,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294646504] [2024-11-19 09:56:36,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:36,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:56:36,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:56:36,855 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:56:36,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 09:56:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:37,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 09:56:37,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:56:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:37,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:56:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:38,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294646504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:56:38,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:56:38,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-19 09:56:38,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019805539] [2024-11-19 09:56:38,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:56:38,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:56:38,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:38,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:56:38,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:56:38,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-19 09:56:38,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 60 transitions, 312 flow. Second operand has 11 states, 11 states have (on average 31.272727272727273) internal successors, (344), 11 states have internal predecessors, (344), 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) [2024-11-19 09:56:38,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:38,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-19 09:56:38,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:56:44,080 INFO L124 PetriNetUnfolderBase]: 2271/5005 cut-off events. [2024-11-19 09:56:44,080 INFO L125 PetriNetUnfolderBase]: For 3833/3834 co-relation queries the response was YES. [2024-11-19 09:56:44,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13036 conditions, 5005 events. 2271/5005 cut-off events. For 3833/3834 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 24072 event pairs, 752 based on Foata normal form. 37/4932 useless extension candidates. Maximal degree in co-relation 13007. Up to 863 conditions per place. [2024-11-19 09:56:44,105 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 146 selfloop transitions, 9 changer transitions 2/170 dead transitions. [2024-11-19 09:56:44,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 170 transitions, 1135 flow [2024-11-19 09:56:44,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 09:56:44,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 09:56:44,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 318 transitions. [2024-11-19 09:56:44,107 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6022727272727273 [2024-11-19 09:56:44,108 INFO L175 Difference]: Start difference. First operand has 85 places, 60 transitions, 312 flow. Second operand 8 states and 318 transitions. [2024-11-19 09:56:44,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 170 transitions, 1135 flow [2024-11-19 09:56:44,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 170 transitions, 1093 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:56:44,118 INFO L231 Difference]: Finished difference. Result has 92 places, 64 transitions, 357 flow [2024-11-19 09:56:44,118 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=357, PETRI_PLACES=92, PETRI_TRANSITIONS=64} [2024-11-19 09:56:44,119 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 34 predicate places. [2024-11-19 09:56:44,119 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 64 transitions, 357 flow [2024-11-19 09:56:44,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 31.272727272727273) internal successors, (344), 11 states have internal predecessors, (344), 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) [2024-11-19 09:56:44,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:44,119 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:56:44,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 09:56:44,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 09:56:44,324 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:44,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:44,325 INFO L85 PathProgramCache]: Analyzing trace with hash -583328023, now seen corresponding path program 1 times [2024-11-19 09:56:44,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:44,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935056726] [2024-11-19 09:56:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:44,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 09:56:44,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471354150] [2024-11-19 09:56:44,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:44,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:56:44,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:56:44,379 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:56:44,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 09:56:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:44,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:56:44,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:56:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:44,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:56:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:46,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:46,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935056726] [2024-11-19 09:56:46,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 09:56:46,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471354150] [2024-11-19 09:56:46,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471354150] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:56:46,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:56:46,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2024-11-19 09:56:46,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123413380] [2024-11-19 09:56:46,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 09:56:46,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:56:46,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:46,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:56:46,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:56:46,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 66 [2024-11-19 09:56:46,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 64 transitions, 357 flow. Second operand has 11 states, 11 states have (on average 27.90909090909091) internal successors, (307), 11 states have internal predecessors, (307), 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) [2024-11-19 09:56:46,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:46,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 66 [2024-11-19 09:56:46,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:56:48,973 INFO L124 PetriNetUnfolderBase]: 1895/4089 cut-off events. [2024-11-19 09:56:48,973 INFO L125 PetriNetUnfolderBase]: For 3282/3282 co-relation queries the response was YES. [2024-11-19 09:56:48,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10725 conditions, 4089 events. 1895/4089 cut-off events. For 3282/3282 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 17755 event pairs, 459 based on Foata normal form. 27/4041 useless extension candidates. Maximal degree in co-relation 10690. Up to 1314 conditions per place. [2024-11-19 09:56:48,994 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 154 selfloop transitions, 10 changer transitions 4/180 dead transitions. [2024-11-19 09:56:48,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 180 transitions, 1136 flow [2024-11-19 09:56:48,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:56:48,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:56:48,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 365 transitions. [2024-11-19 09:56:48,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.553030303030303 [2024-11-19 09:56:48,997 INFO L175 Difference]: Start difference. First operand has 92 places, 64 transitions, 357 flow. Second operand 10 states and 365 transitions. [2024-11-19 09:56:48,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 180 transitions, 1136 flow [2024-11-19 09:56:49,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 180 transitions, 1118 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-19 09:56:49,006 INFO L231 Difference]: Finished difference. Result has 101 places, 66 transitions, 385 flow [2024-11-19 09:56:49,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=385, PETRI_PLACES=101, PETRI_TRANSITIONS=66} [2024-11-19 09:56:49,006 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 43 predicate places. [2024-11-19 09:56:49,007 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 66 transitions, 385 flow [2024-11-19 09:56:49,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 27.90909090909091) internal successors, (307), 11 states have internal predecessors, (307), 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) [2024-11-19 09:56:49,007 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:56:49,007 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:56:49,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 09:56:49,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 09:56:49,209 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-19 09:56:49,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:56:49,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1815092925, now seen corresponding path program 1 times [2024-11-19 09:56:49,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:56:49,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753277968] [2024-11-19 09:56:49,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:49,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:56:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 09:56:49,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799927131] [2024-11-19 09:56:49,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:56:49,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:56:49,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:56:49,289 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:56:49,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 09:56:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:56:49,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-19 09:56:49,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:56:50,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2024-11-19 09:56:50,474 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:50,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:56:51,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2024-11-19 09:56:51,321 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:56:51,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 75 [2024-11-19 09:56:51,461 INFO L349 Elim1Store]: treesize reduction 50, result has 51.0 percent of original size [2024-11-19 09:56:51,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 126 [2024-11-19 09:56:51,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:56:51,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 117 treesize of output 85 [2024-11-19 09:56:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:56:56,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:56:56,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753277968] [2024-11-19 09:56:56,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 09:56:56,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799927131] [2024-11-19 09:56:56,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799927131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:56:56,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:56:56,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 28 [2024-11-19 09:56:56,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61151222] [2024-11-19 09:56:56,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 09:56:56,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-19 09:56:56,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:56:56,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-19 09:56:56,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2024-11-19 09:56:57,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 66 [2024-11-19 09:56:57,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 66 transitions, 385 flow. Second operand has 29 states, 29 states have (on average 19.896551724137932) internal successors, (577), 29 states have internal predecessors, (577), 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) [2024-11-19 09:56:57,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:56:57,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 66 [2024-11-19 09:56:57,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand