./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 3289d67d 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.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:43:25,241 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:43:25,330 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:43:25,335 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:43:25,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:43:25,363 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:43:25,364 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:43:25,365 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:43:25,365 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:43:25,367 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:43:25,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:43:25,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:43:25,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:43:25,370 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:43:25,370 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:43:25,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:43:25,371 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:43:25,371 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:43:25,371 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:43:25,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:43:25,372 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:43:25,374 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:43:25,375 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:43:25,375 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:43:25,375 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:43:25,375 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:43:25,375 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:43:25,376 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:43:25,376 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:43:25,376 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:43:25,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:43:25,377 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:43:25,377 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:43:25,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:43:25,377 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:43:25,377 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:43:25,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:43:25,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:43:25,378 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:43:25,381 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:43:25,381 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:43:25,382 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:43:25,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 [2024-11-17 03:43:25,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:43:25,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:43:25,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:43:25,656 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:43:25,656 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:43:25,657 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2024-11-17 03:43:27,080 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:43:27,323 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:43:27,324 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2024-11-17 03:43:27,338 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2e094f9b/409e25164b3640d7be2e49422c895bca/FLAG7d9cfc3d3 [2024-11-17 03:43:27,647 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2e094f9b/409e25164b3640d7be2e49422c895bca [2024-11-17 03:43:27,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:43:27,652 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:43:27,656 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:43:27,656 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:43:27,660 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:43:27,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:43:27" (1/1) ... [2024-11-17 03:43:27,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f4e01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:27, skipping insertion in model container [2024-11-17 03:43:27,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:43:27" (1/1) ... [2024-11-17 03:43:27,711 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:43:28,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:43:28,104 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:43:28,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:43:28,200 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:43:28,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:28 WrapperNode [2024-11-17 03:43:28,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:43:28,202 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:43:28,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:43:28,202 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:43:28,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:28" (1/1) ... [2024-11-17 03:43:28,222 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:28" (1/1) ... [2024-11-17 03:43:28,254 INFO L138 Inliner]: procedures = 168, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 149 [2024-11-17 03:43:28,254 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:43:28,259 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:43:28,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:43:28,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:43:28,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:28" (1/1) ... [2024-11-17 03:43:28,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:28" (1/1) ... [2024-11-17 03:43:28,274 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:28" (1/1) ... [2024-11-17 03:43:28,291 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]. [2024-11-17 03:43:28,292 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:28" (1/1) ... [2024-11-17 03:43:28,292 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:28" (1/1) ... [2024-11-17 03:43:28,300 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:28" (1/1) ... [2024-11-17 03:43:28,301 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:28" (1/1) ... [2024-11-17 03:43:28,303 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:28" (1/1) ... [2024-11-17 03:43:28,304 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:28" (1/1) ... [2024-11-17 03:43:28,311 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:43:28,312 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:43:28,312 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:43:28,313 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:43:28,313 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:28" (1/1) ... [2024-11-17 03:43:28,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:43:28,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:28,365 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) [2024-11-17 03:43:28,377 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 [2024-11-17 03:43:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 03:43:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 03:43:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 03:43:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 03:43:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-17 03:43:28,424 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-17 03:43:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-17 03:43:28,425 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-17 03:43:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:43:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 03:43:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 03:43:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 03:43:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 03:43:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:43:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-17 03:43:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-17 03:43:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-17 03:43:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-17 03:43:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:43:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:43:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 03:43:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 03:43:28,429 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 03:43:28,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:43:28,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:43:28,431 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:43:28,575 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:43:28,577 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:43:28,851 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L699: havoc removeLogElement_#t~mem2#1; [2024-11-17 03:43:28,853 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:43:28,853 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:43:28,994 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:43:28,994 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:43:28,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:43:28 BoogieIcfgContainer [2024-11-17 03:43:28,995 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:43:28,997 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:43:28,997 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:43:29,000 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:43:29,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:43:27" (1/3) ... [2024-11-17 03:43:29,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c49ba89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:43:29, skipping insertion in model container [2024-11-17 03:43:29,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:28" (2/3) ... [2024-11-17 03:43:29,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c49ba89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:43:29, skipping insertion in model container [2024-11-17 03:43:29,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:43:28" (3/3) ... [2024-11-17 03:43:29,004 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2024-11-17 03:43:29,017 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:43:29,017 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-17 03:43:29,018 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:43:29,081 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 03:43:29,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 72 transitions, 158 flow [2024-11-17 03:43:29,154 INFO L124 PetriNetUnfolderBase]: 14/70 cut-off events. [2024-11-17 03:43:29,154 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:43:29,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 70 events. 14/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 197 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2024-11-17 03:43:29,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 72 transitions, 158 flow [2024-11-17 03:43:29,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 69 transitions, 150 flow [2024-11-17 03:43:29,170 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:43:29,176 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;@688dad1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:43:29,176 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-17 03:43:29,185 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:43:29,185 INFO L124 PetriNetUnfolderBase]: 3/28 cut-off events. [2024-11-17 03:43:29,185 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:43:29,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:29,186 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:29,187 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-17 03:43:29,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:29,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2076915482, now seen corresponding path program 1 times [2024-11-17 03:43:29,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:29,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198762671] [2024-11-17 03:43:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:29,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:29,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:29,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198762671] [2024-11-17 03:43:29,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198762671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:29,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:29,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:43:29,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724770091] [2024-11-17 03:43:29,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:29,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:43:29,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:29,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:43:29,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:43:29,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 72 [2024-11-17 03:43:29,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 69 transitions, 150 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) [2024-11-17 03:43:29,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:29,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 72 [2024-11-17 03:43:29,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:29,965 INFO L124 PetriNetUnfolderBase]: 561/1130 cut-off events. [2024-11-17 03:43:29,966 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-11-17 03:43:29,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2068 conditions, 1130 events. 561/1130 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6552 event pairs, 428 based on Foata normal form. 205/1213 useless extension candidates. Maximal degree in co-relation 1988. Up to 896 conditions per place. [2024-11-17 03:43:29,983 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 33 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2024-11-17 03:43:29,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 192 flow [2024-11-17 03:43:29,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:43:29,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:43:29,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-11-17 03:43:29,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-11-17 03:43:29,998 INFO L175 Difference]: Start difference. First operand has 62 places, 69 transitions, 150 flow. Second operand 3 states and 116 transitions. [2024-11-17 03:43:29,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 192 flow [2024-11-17 03:43:30,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 184 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:43:30,007 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 118 flow [2024-11-17 03:43:30,011 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2024-11-17 03:43:30,014 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -7 predicate places. [2024-11-17 03:43:30,015 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 118 flow [2024-11-17 03:43:30,015 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) [2024-11-17 03:43:30,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:30,016 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:30,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:43:30,016 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-17 03:43:30,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:30,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2076915483, now seen corresponding path program 1 times [2024-11-17 03:43:30,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:30,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414338989] [2024-11-17 03:43:30,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:30,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:30,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:30,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414338989] [2024-11-17 03:43:30,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414338989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:30,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:30,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:43:30,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185751259] [2024-11-17 03:43:30,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:30,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:43:30,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:30,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:43:30,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:43:30,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 72 [2024-11-17 03:43:30,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:30,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:30,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 72 [2024-11-17 03:43:30,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:30,638 INFO L124 PetriNetUnfolderBase]: 1015/2027 cut-off events. [2024-11-17 03:43:30,640 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-17 03:43:30,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3641 conditions, 2027 events. 1015/2027 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 12197 event pairs, 375 based on Foata normal form. 0/1810 useless extension candidates. Maximal degree in co-relation 3635. Up to 903 conditions per place. [2024-11-17 03:43:30,652 INFO L140 encePairwiseOnDemand]: 68/72 looper letters, 61 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2024-11-17 03:43:30,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 84 transitions, 303 flow [2024-11-17 03:43:30,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:43:30,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:43:30,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-11-17 03:43:30,656 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2024-11-17 03:43:30,656 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 118 flow. Second operand 3 states and 140 transitions. [2024-11-17 03:43:30,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 84 transitions, 303 flow [2024-11-17 03:43:30,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 84 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:43:30,659 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 131 flow [2024-11-17 03:43:30,660 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2024-11-17 03:43:30,662 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2024-11-17 03:43:30,662 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 131 flow [2024-11-17 03:43:30,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:30,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:30,663 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:30,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:43:30,664 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-17 03:43:30,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:30,664 INFO L85 PathProgramCache]: Analyzing trace with hash 90710069, now seen corresponding path program 1 times [2024-11-17 03:43:30,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:30,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035431267] [2024-11-17 03:43:30,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:30,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:30,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:30,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035431267] [2024-11-17 03:43:30,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035431267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:30,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:30,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:43:30,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185513499] [2024-11-17 03:43:30,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:30,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:43:30,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:30,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:43:30,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:43:30,899 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 72 [2024-11-17 03:43:30,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2024-11-17 03:43:30,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:30,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 72 [2024-11-17 03:43:30,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:31,118 INFO L124 PetriNetUnfolderBase]: 1059/2056 cut-off events. [2024-11-17 03:43:31,118 INFO L125 PetriNetUnfolderBase]: For 54/56 co-relation queries the response was YES. [2024-11-17 03:43:31,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3872 conditions, 2056 events. 1059/2056 cut-off events. For 54/56 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 12043 event pairs, 814 based on Foata normal form. 0/1835 useless extension candidates. Maximal degree in co-relation 3864. Up to 1665 conditions per place. [2024-11-17 03:43:31,131 INFO L140 encePairwiseOnDemand]: 70/72 looper letters, 35 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2024-11-17 03:43:31,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 197 flow [2024-11-17 03:43:31,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:43:31,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:43:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-11-17 03:43:31,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-17 03:43:31,134 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 131 flow. Second operand 3 states and 108 transitions. [2024-11-17 03:43:31,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 197 flow [2024-11-17 03:43:31,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:43:31,137 INFO L231 Difference]: Finished difference. Result has 55 places, 54 transitions, 125 flow [2024-11-17 03:43:31,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=55, PETRI_TRANSITIONS=54} [2024-11-17 03:43:31,138 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -7 predicate places. [2024-11-17 03:43:31,139 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 54 transitions, 125 flow [2024-11-17 03:43:31,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2024-11-17 03:43:31,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:31,139 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:31,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:43:31,140 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-17 03:43:31,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:31,141 INFO L85 PathProgramCache]: Analyzing trace with hash 91665399, now seen corresponding path program 1 times [2024-11-17 03:43:31,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:31,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738411412] [2024-11-17 03:43:31,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:31,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:31,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:31,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738411412] [2024-11-17 03:43:31,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738411412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:31,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:31,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:43:31,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920449998] [2024-11-17 03:43:31,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:31,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:43:31,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:31,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:43:31,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:43:31,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 72 [2024-11-17 03:43:31,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-11-17 03:43:31,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:31,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 72 [2024-11-17 03:43:31,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:31,455 INFO L124 PetriNetUnfolderBase]: 731/1499 cut-off events. [2024-11-17 03:43:31,455 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-17 03:43:31,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2751 conditions, 1499 events. 731/1499 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8444 event pairs, 208 based on Foata normal form. 22/1399 useless extension candidates. Maximal degree in co-relation 2742. Up to 772 conditions per place. [2024-11-17 03:43:31,463 INFO L140 encePairwiseOnDemand]: 69/72 looper letters, 54 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2024-11-17 03:43:31,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 284 flow [2024-11-17 03:43:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:43:31,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:43:31,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-11-17 03:43:31,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-17 03:43:31,465 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 125 flow. Second operand 3 states and 135 transitions. [2024-11-17 03:43:31,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 284 flow [2024-11-17 03:43:31,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 76 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:43:31,468 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 132 flow [2024-11-17 03:43:31,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-11-17 03:43:31,469 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2024-11-17 03:43:31,469 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 132 flow [2024-11-17 03:43:31,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-11-17 03:43:31,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:31,469 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:31,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:43:31,470 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-17 03:43:31,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:31,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1738644242, now seen corresponding path program 1 times [2024-11-17 03:43:31,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:31,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763815814] [2024-11-17 03:43:31,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:31,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:31,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:31,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763815814] [2024-11-17 03:43:31,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763815814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:31,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:31,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:43:31,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833063207] [2024-11-17 03:43:31,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:31,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:43:31,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:31,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:43:31,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:43:31,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 72 [2024-11-17 03:43:31,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-17 03:43:31,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:31,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 72 [2024-11-17 03:43:31,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:31,711 INFO L124 PetriNetUnfolderBase]: 818/1721 cut-off events. [2024-11-17 03:43:31,711 INFO L125 PetriNetUnfolderBase]: For 115/131 co-relation queries the response was YES. [2024-11-17 03:43:31,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3187 conditions, 1721 events. 818/1721 cut-off events. For 115/131 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 9706 event pairs, 360 based on Foata normal form. 36/1612 useless extension candidates. Maximal degree in co-relation 3176. Up to 770 conditions per place. [2024-11-17 03:43:31,721 INFO L140 encePairwiseOnDemand]: 68/72 looper letters, 53 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-11-17 03:43:31,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 76 transitions, 295 flow [2024-11-17 03:43:31,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:43:31,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:43:31,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-11-17 03:43:31,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6203703703703703 [2024-11-17 03:43:31,723 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 132 flow. Second operand 3 states and 134 transitions. [2024-11-17 03:43:31,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 76 transitions, 295 flow [2024-11-17 03:43:31,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 76 transitions, 291 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:43:31,728 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 143 flow [2024-11-17 03:43:31,728 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2024-11-17 03:43:31,728 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2024-11-17 03:43:31,729 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 143 flow [2024-11-17 03:43:31,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-17 03:43:31,729 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:31,729 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:31,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:43:31,729 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-17 03:43:31,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:31,730 INFO L85 PathProgramCache]: Analyzing trace with hash 778767338, now seen corresponding path program 1 times [2024-11-17 03:43:31,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:31,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611434849] [2024-11-17 03:43:31,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:31,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:31,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:31,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611434849] [2024-11-17 03:43:31,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611434849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:31,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:31,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 03:43:31,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330450130] [2024-11-17 03:43:31,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:31,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:43:31,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:31,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:43:31,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:43:31,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 72 [2024-11-17 03:43:31,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2024-11-17 03:43:31,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:31,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 72 [2024-11-17 03:43:31,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:32,239 INFO L124 PetriNetUnfolderBase]: 1111/2266 cut-off events. [2024-11-17 03:43:32,240 INFO L125 PetriNetUnfolderBase]: For 197/210 co-relation queries the response was YES. [2024-11-17 03:43:32,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4378 conditions, 2266 events. 1111/2266 cut-off events. For 197/210 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 14010 event pairs, 525 based on Foata normal form. 12/2119 useless extension candidates. Maximal degree in co-relation 4366. Up to 1394 conditions per place. [2024-11-17 03:43:32,254 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 89 selfloop transitions, 7 changer transitions 0/114 dead transitions. [2024-11-17 03:43:32,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 114 transitions, 471 flow [2024-11-17 03:43:32,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 03:43:32,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 03:43:32,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 264 transitions. [2024-11-17 03:43:32,256 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-11-17 03:43:32,256 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 143 flow. Second operand 7 states and 264 transitions. [2024-11-17 03:43:32,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 114 transitions, 471 flow [2024-11-17 03:43:32,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 114 transitions, 466 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:43:32,262 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 189 flow [2024-11-17 03:43:32,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=189, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-11-17 03:43:32,263 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 5 predicate places. [2024-11-17 03:43:32,265 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 189 flow [2024-11-17 03:43:32,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2024-11-17 03:43:32,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:32,265 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:32,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:43:32,266 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-17 03:43:32,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:32,266 INFO L85 PathProgramCache]: Analyzing trace with hash -851594569, now seen corresponding path program 1 times [2024-11-17 03:43:32,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:32,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143755899] [2024-11-17 03:43:32,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:32,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:32,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:32,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143755899] [2024-11-17 03:43:32,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143755899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:32,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:32,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:43:32,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334161405] [2024-11-17 03:43:32,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:32,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:43:32,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:32,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:43:32,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:43:32,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 72 [2024-11-17 03:43:32,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:32,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:32,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 72 [2024-11-17 03:43:32,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:32,526 INFO L124 PetriNetUnfolderBase]: 831/1762 cut-off events. [2024-11-17 03:43:32,526 INFO L125 PetriNetUnfolderBase]: For 264/277 co-relation queries the response was YES. [2024-11-17 03:43:32,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3565 conditions, 1762 events. 831/1762 cut-off events. For 264/277 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 10162 event pairs, 293 based on Foata normal form. 55/1742 useless extension candidates. Maximal degree in co-relation 3549. Up to 864 conditions per place. [2024-11-17 03:43:32,537 INFO L140 encePairwiseOnDemand]: 68/72 looper letters, 54 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2024-11-17 03:43:32,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 77 transitions, 340 flow [2024-11-17 03:43:32,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:43:32,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:43:32,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-17 03:43:32,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-17 03:43:32,539 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 189 flow. Second operand 3 states and 126 transitions. [2024-11-17 03:43:32,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 77 transitions, 340 flow [2024-11-17 03:43:32,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 77 transitions, 335 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 03:43:32,542 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 198 flow [2024-11-17 03:43:32,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2024-11-17 03:43:32,543 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2024-11-17 03:43:32,543 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 198 flow [2024-11-17 03:43:32,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:32,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:32,544 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:32,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 03:43:32,544 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)] === [2024-11-17 03:43:32,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:32,545 INFO L85 PathProgramCache]: Analyzing trace with hash 241641560, now seen corresponding path program 1 times [2024-11-17 03:43:32,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:32,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958504331] [2024-11-17 03:43:32,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:32,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:32,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:32,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958504331] [2024-11-17 03:43:32,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958504331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:32,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:32,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:43:32,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427870682] [2024-11-17 03:43:32,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:32,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:43:32,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:32,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:43:32,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:43:32,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 72 [2024-11-17 03:43:32,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:32,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:32,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 72 [2024-11-17 03:43:32,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:32,858 INFO L124 PetriNetUnfolderBase]: 1268/2731 cut-off events. [2024-11-17 03:43:32,858 INFO L125 PetriNetUnfolderBase]: For 620/643 co-relation queries the response was YES. [2024-11-17 03:43:32,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5634 conditions, 2731 events. 1268/2731 cut-off events. For 620/643 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17923 event pairs, 637 based on Foata normal form. 53/2686 useless extension candidates. Maximal degree in co-relation 5617. Up to 1408 conditions per place. [2024-11-17 03:43:32,875 INFO L140 encePairwiseOnDemand]: 69/72 looper letters, 69 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2024-11-17 03:43:32,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 453 flow [2024-11-17 03:43:32,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:43:32,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:43:32,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-11-17 03:43:32,879 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-17 03:43:32,879 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 198 flow. Second operand 3 states and 135 transitions. [2024-11-17 03:43:32,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 453 flow [2024-11-17 03:43:32,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 92 transitions, 443 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:43:32,884 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 204 flow [2024-11-17 03:43:32,884 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2024-11-17 03:43:32,885 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 9 predicate places. [2024-11-17 03:43:32,885 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 204 flow [2024-11-17 03:43:32,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:32,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:32,886 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] [2024-11-17 03:43:32,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:43:32,886 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-17 03:43:32,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:32,888 INFO L85 PathProgramCache]: Analyzing trace with hash -814960883, now seen corresponding path program 1 times [2024-11-17 03:43:32,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:32,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965454711] [2024-11-17 03:43:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:32,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:33,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:33,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:33,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965454711] [2024-11-17 03:43:33,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965454711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:33,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:33,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:43:33,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851043160] [2024-11-17 03:43:33,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:33,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:43:33,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:33,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:43:33,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:43:33,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 72 [2024-11-17 03:43:33,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:33,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:33,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 72 [2024-11-17 03:43:33,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:33,236 INFO L124 PetriNetUnfolderBase]: 804/1938 cut-off events. [2024-11-17 03:43:33,237 INFO L125 PetriNetUnfolderBase]: For 567/567 co-relation queries the response was YES. [2024-11-17 03:43:33,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4187 conditions, 1938 events. 804/1938 cut-off events. For 567/567 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 11673 event pairs, 255 based on Foata normal form. 92/1965 useless extension candidates. Maximal degree in co-relation 4169. Up to 821 conditions per place. [2024-11-17 03:43:33,249 INFO L140 encePairwiseOnDemand]: 68/72 looper letters, 49 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2024-11-17 03:43:33,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 75 transitions, 356 flow [2024-11-17 03:43:33,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:43:33,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:43:33,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-17 03:43:33,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-11-17 03:43:33,251 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 204 flow. Second operand 3 states and 123 transitions. [2024-11-17 03:43:33,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 75 transitions, 356 flow [2024-11-17 03:43:33,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:43:33,256 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 210 flow [2024-11-17 03:43:33,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2024-11-17 03:43:33,258 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 10 predicate places. [2024-11-17 03:43:33,258 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 210 flow [2024-11-17 03:43:33,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:33,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:33,258 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:33,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 03:43:33,259 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-17 03:43:33,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:33,259 INFO L85 PathProgramCache]: Analyzing trace with hash 758138171, now seen corresponding path program 1 times [2024-11-17 03:43:33,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:33,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395008568] [2024-11-17 03:43:33,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:33,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:33,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:33,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:33,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395008568] [2024-11-17 03:43:33,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395008568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:33,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:33,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:43:33,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401094868] [2024-11-17 03:43:33,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:33,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:43:33,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:33,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:43:33,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:43:33,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 72 [2024-11-17 03:43:33,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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) [2024-11-17 03:43:33,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:33,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 72 [2024-11-17 03:43:33,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:34,063 INFO L124 PetriNetUnfolderBase]: 1512/3479 cut-off events. [2024-11-17 03:43:34,063 INFO L125 PetriNetUnfolderBase]: For 1122/1122 co-relation queries the response was YES. [2024-11-17 03:43:34,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7783 conditions, 3479 events. 1512/3479 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 22003 event pairs, 492 based on Foata normal form. 0/3326 useless extension candidates. Maximal degree in co-relation 7765. Up to 960 conditions per place. [2024-11-17 03:43:34,084 INFO L140 encePairwiseOnDemand]: 68/72 looper letters, 111 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2024-11-17 03:43:34,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 135 transitions, 685 flow [2024-11-17 03:43:34,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:43:34,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:43:34,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2024-11-17 03:43:34,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-17 03:43:34,086 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 210 flow. Second operand 5 states and 228 transitions. [2024-11-17 03:43:34,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 135 transitions, 685 flow [2024-11-17 03:43:34,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 135 transitions, 669 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:43:34,092 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 224 flow [2024-11-17 03:43:34,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-11-17 03:43:34,093 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 14 predicate places. [2024-11-17 03:43:34,093 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 224 flow [2024-11-17 03:43:34,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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) [2024-11-17 03:43:34,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:34,094 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:34,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 03:43:34,094 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-17 03:43:34,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:34,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1595322924, now seen corresponding path program 1 times [2024-11-17 03:43:34,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:34,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462774578] [2024-11-17 03:43:34,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:34,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 03:43:34,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272350860] [2024-11-17 03:43:34,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:34,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:34,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:34,128 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) [2024-11-17 03:43:34,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:43:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:34,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 03:43:34,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:34,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:34,513 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:43:34,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:34,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462774578] [2024-11-17 03:43:34,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 03:43:34,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272350860] [2024-11-17 03:43:34,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272350860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:34,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:34,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:43:34,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73480559] [2024-11-17 03:43:34,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:34,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:43:34,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:34,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:43:34,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:43:34,542 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 72 [2024-11-17 03:43:34,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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) [2024-11-17 03:43:34,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:34,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 72 [2024-11-17 03:43:34,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:34,839 INFO L124 PetriNetUnfolderBase]: 1134/2712 cut-off events. [2024-11-17 03:43:34,839 INFO L125 PetriNetUnfolderBase]: For 837/839 co-relation queries the response was YES. [2024-11-17 03:43:34,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5942 conditions, 2712 events. 1134/2712 cut-off events. For 837/839 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 16048 event pairs, 404 based on Foata normal form. 18/2656 useless extension candidates. Maximal degree in co-relation 5921. Up to 1171 conditions per place. [2024-11-17 03:43:34,853 INFO L140 encePairwiseOnDemand]: 68/72 looper letters, 71 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-11-17 03:43:34,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 96 transitions, 470 flow [2024-11-17 03:43:34,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:43:34,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:43:34,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2024-11-17 03:43:34,855 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2024-11-17 03:43:34,855 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 224 flow. Second operand 4 states and 172 transitions. [2024-11-17 03:43:34,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 96 transitions, 470 flow [2024-11-17 03:43:34,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 96 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:43:34,859 INFO L231 Difference]: Finished difference. Result has 79 places, 64 transitions, 232 flow [2024-11-17 03:43:34,860 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=79, PETRI_TRANSITIONS=64} [2024-11-17 03:43:34,860 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 17 predicate places. [2024-11-17 03:43:34,860 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 64 transitions, 232 flow [2024-11-17 03:43:34,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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) [2024-11-17 03:43:34,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:34,861 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:34,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 03:43:35,065 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,SelfDestructingSolverStorable10 [2024-11-17 03:43:35,066 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-17 03:43:35,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:35,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2064892665, now seen corresponding path program 1 times [2024-11-17 03:43:35,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:35,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070060322] [2024-11-17 03:43:35,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:35,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:35,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:35,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070060322] [2024-11-17 03:43:35,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070060322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:35,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:35,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-17 03:43:35,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811321436] [2024-11-17 03:43:35,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:35,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 03:43:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:35,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 03:43:35,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-17 03:43:36,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 72 [2024-11-17 03:43:36,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 64 transitions, 232 flow. Second operand has 11 states, 11 states have (on average 26.818181818181817) internal successors, (295), 11 states have internal predecessors, (295), 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) [2024-11-17 03:43:36,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:36,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 72 [2024-11-17 03:43:36,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:37,061 INFO L124 PetriNetUnfolderBase]: 1562/3568 cut-off events. [2024-11-17 03:43:37,061 INFO L125 PetriNetUnfolderBase]: For 1303/1307 co-relation queries the response was YES. [2024-11-17 03:43:37,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8013 conditions, 3568 events. 1562/3568 cut-off events. For 1303/1307 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 21861 event pairs, 470 based on Foata normal form. 0/3489 useless extension candidates. Maximal degree in co-relation 7990. Up to 1101 conditions per place. [2024-11-17 03:43:37,081 INFO L140 encePairwiseOnDemand]: 60/72 looper letters, 150 selfloop transitions, 16 changer transitions 0/187 dead transitions. [2024-11-17 03:43:37,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 187 transitions, 959 flow [2024-11-17 03:43:37,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 03:43:37,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-17 03:43:37,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 478 transitions. [2024-11-17 03:43:37,083 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5106837606837606 [2024-11-17 03:43:37,083 INFO L175 Difference]: Start difference. First operand has 79 places, 64 transitions, 232 flow. Second operand 13 states and 478 transitions. [2024-11-17 03:43:37,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 187 transitions, 959 flow [2024-11-17 03:43:37,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 187 transitions, 951 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:43:37,090 INFO L231 Difference]: Finished difference. Result has 92 places, 73 transitions, 320 flow [2024-11-17 03:43:37,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=320, PETRI_PLACES=92, PETRI_TRANSITIONS=73} [2024-11-17 03:43:37,093 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 30 predicate places. [2024-11-17 03:43:37,093 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 73 transitions, 320 flow [2024-11-17 03:43:37,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 26.818181818181817) internal successors, (295), 11 states have internal predecessors, (295), 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) [2024-11-17 03:43:37,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:37,094 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1] [2024-11-17 03:43:37,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 03:43:37,094 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-17 03:43:37,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:37,095 INFO L85 PathProgramCache]: Analyzing trace with hash -2142599615, now seen corresponding path program 1 times [2024-11-17 03:43:37,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:37,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147859294] [2024-11-17 03:43:37,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:37,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:37,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:37,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:37,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147859294] [2024-11-17 03:43:37,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147859294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:37,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825533265] [2024-11-17 03:43:37,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:37,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:37,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:37,152 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) [2024-11-17 03:43:37,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 03:43:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:37,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-17 03:43:37,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 03:43:37,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:43:37,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825533265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:37,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 03:43:37,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-17 03:43:37,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712671422] [2024-11-17 03:43:37,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:37,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:43:37,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:37,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:43:37,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:43:37,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 72 [2024-11-17 03:43:37,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 73 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-11-17 03:43:37,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:37,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 72 [2024-11-17 03:43:37,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:37,652 INFO L124 PetriNetUnfolderBase]: 1318/3172 cut-off events. [2024-11-17 03:43:37,652 INFO L125 PetriNetUnfolderBase]: For 1516/1525 co-relation queries the response was YES. [2024-11-17 03:43:37,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7402 conditions, 3172 events. 1318/3172 cut-off events. For 1516/1525 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 20035 event pairs, 1038 based on Foata normal form. 13/3061 useless extension candidates. Maximal degree in co-relation 7375. Up to 2264 conditions per place. [2024-11-17 03:43:37,673 INFO L140 encePairwiseOnDemand]: 70/72 looper letters, 47 selfloop transitions, 1 changer transitions 3/72 dead transitions. [2024-11-17 03:43:37,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 72 transitions, 420 flow [2024-11-17 03:43:37,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:43:37,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:43:37,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-11-17 03:43:37,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-11-17 03:43:37,675 INFO L175 Difference]: Start difference. First operand has 92 places, 73 transitions, 320 flow. Second operand 3 states and 109 transitions. [2024-11-17 03:43:37,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 72 transitions, 420 flow [2024-11-17 03:43:37,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 72 transitions, 407 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 03:43:37,681 INFO L231 Difference]: Finished difference. Result has 88 places, 69 transitions, 297 flow [2024-11-17 03:43:37,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=88, PETRI_TRANSITIONS=69} [2024-11-17 03:43:37,683 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 26 predicate places. [2024-11-17 03:43:37,683 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 69 transitions, 297 flow [2024-11-17 03:43:37,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-11-17 03:43:37,683 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:37,684 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1] [2024-11-17 03:43:37,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 03:43:37,887 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 [2024-11-17 03:43:37,888 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-17 03:43:37,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:37,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1459012445, now seen corresponding path program 1 times [2024-11-17 03:43:37,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:37,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199983957] [2024-11-17 03:43:37,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:37,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:38,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:38,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199983957] [2024-11-17 03:43:38,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199983957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:38,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792027532] [2024-11-17 03:43:38,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:38,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:38,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:38,254 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) [2024-11-17 03:43:38,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 03:43:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:38,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 03:43:38,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:38,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:39,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:39,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792027532] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:39,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:39,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-17 03:43:39,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685187056] [2024-11-17 03:43:39,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:39,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 03:43:39,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:39,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 03:43:39,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-17 03:43:39,915 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 72 [2024-11-17 03:43:39,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 69 transitions, 297 flow. Second operand has 12 states, 12 states have (on average 30.0) internal successors, (360), 12 states have internal predecessors, (360), 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) [2024-11-17 03:43:39,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:39,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 72 [2024-11-17 03:43:39,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:40,444 INFO L124 PetriNetUnfolderBase]: 1370/3258 cut-off events. [2024-11-17 03:43:40,444 INFO L125 PetriNetUnfolderBase]: For 1254/1256 co-relation queries the response was YES. [2024-11-17 03:43:40,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7473 conditions, 3258 events. 1370/3258 cut-off events. For 1254/1256 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18826 event pairs, 842 based on Foata normal form. 54/3206 useless extension candidates. Maximal degree in co-relation 7446. Up to 1611 conditions per place. [2024-11-17 03:43:40,464 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 59 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2024-11-17 03:43:40,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 477 flow [2024-11-17 03:43:40,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:43:40,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:43:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-17 03:43:40,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-11-17 03:43:40,466 INFO L175 Difference]: Start difference. First operand has 88 places, 69 transitions, 297 flow. Second operand 4 states and 145 transitions. [2024-11-17 03:43:40,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 84 transitions, 477 flow [2024-11-17 03:43:40,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 84 transitions, 472 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-17 03:43:40,475 INFO L231 Difference]: Finished difference. Result has 87 places, 67 transitions, 304 flow [2024-11-17 03:43:40,476 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=87, PETRI_TRANSITIONS=67} [2024-11-17 03:43:40,478 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 25 predicate places. [2024-11-17 03:43:40,478 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 67 transitions, 304 flow [2024-11-17 03:43:40,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 30.0) internal successors, (360), 12 states have internal predecessors, (360), 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) [2024-11-17 03:43:40,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:40,478 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:40,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 03:43:40,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:40,679 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-17 03:43:40,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:40,680 INFO L85 PathProgramCache]: Analyzing trace with hash -827901754, now seen corresponding path program 1 times [2024-11-17 03:43:40,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:40,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51792008] [2024-11-17 03:43:40,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:40,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:40,814 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 03:43:40,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:40,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51792008] [2024-11-17 03:43:40,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51792008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:40,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:40,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 03:43:40,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167837791] [2024-11-17 03:43:40,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:40,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:43:40,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:40,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:43:40,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:43:40,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 72 [2024-11-17 03:43:40,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 67 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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) [2024-11-17 03:43:40,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:40,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 72 [2024-11-17 03:43:40,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:41,176 INFO L124 PetriNetUnfolderBase]: 1428/3273 cut-off events. [2024-11-17 03:43:41,177 INFO L125 PetriNetUnfolderBase]: For 1570/1570 co-relation queries the response was YES. [2024-11-17 03:43:41,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7713 conditions, 3273 events. 1428/3273 cut-off events. For 1570/1570 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 18554 event pairs, 714 based on Foata normal form. 0/3171 useless extension candidates. Maximal degree in co-relation 7685. Up to 1757 conditions per place. [2024-11-17 03:43:41,193 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 76 selfloop transitions, 11 changer transitions 5/108 dead transitions. [2024-11-17 03:43:41,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 108 transitions, 639 flow [2024-11-17 03:43:41,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:43:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:43:41,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-11-17 03:43:41,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5023148148148148 [2024-11-17 03:43:41,195 INFO L175 Difference]: Start difference. First operand has 87 places, 67 transitions, 304 flow. Second operand 6 states and 217 transitions. [2024-11-17 03:43:41,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 108 transitions, 639 flow [2024-11-17 03:43:41,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 108 transitions, 627 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-17 03:43:41,202 INFO L231 Difference]: Finished difference. Result has 88 places, 64 transitions, 317 flow [2024-11-17 03:43:41,202 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=317, PETRI_PLACES=88, PETRI_TRANSITIONS=64} [2024-11-17 03:43:41,203 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 26 predicate places. [2024-11-17 03:43:41,203 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 64 transitions, 317 flow [2024-11-17 03:43:41,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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) [2024-11-17 03:43:41,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:41,203 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] [2024-11-17 03:43:41,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 03:43:41,204 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-17 03:43:41,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:41,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1437135776, now seen corresponding path program 1 times [2024-11-17 03:43:41,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:41,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814912861] [2024-11-17 03:43:41,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:41,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:41,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:41,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814912861] [2024-11-17 03:43:41,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814912861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:41,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785143543] [2024-11-17 03:43:41,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:41,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:41,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:41,555 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) [2024-11-17 03:43:41,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 03:43:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:41,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 03:43:41,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:42,073 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:42,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:43,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785143543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:43,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:43,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-17 03:43:43,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909439300] [2024-11-17 03:43:43,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:43,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 03:43:43,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:43,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 03:43:43,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 03:43:43,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 72 [2024-11-17 03:43:43,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 64 transitions, 317 flow. Second operand has 12 states, 12 states have (on average 32.5) internal successors, (390), 12 states have internal predecessors, (390), 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) [2024-11-17 03:43:43,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:43,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 72 [2024-11-17 03:43:43,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:51,924 WARN L286 SmtUtils]: Spent 8.32s on a formula simplification. DAG size of input: 45 DAG size of output: 41 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-17 03:43:52,400 INFO L124 PetriNetUnfolderBase]: 2271/5430 cut-off events. [2024-11-17 03:43:52,400 INFO L125 PetriNetUnfolderBase]: For 3433/3433 co-relation queries the response was YES. [2024-11-17 03:43:52,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13353 conditions, 5430 events. 2271/5430 cut-off events. For 3433/3433 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 29458 event pairs, 617 based on Foata normal form. 36/5361 useless extension candidates. Maximal degree in co-relation 13325. Up to 832 conditions per place. [2024-11-17 03:43:52,430 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 154 selfloop transitions, 10 changer transitions 3/184 dead transitions. [2024-11-17 03:43:52,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 184 transitions, 1179 flow [2024-11-17 03:43:52,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 03:43:52,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-17 03:43:52,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 367 transitions. [2024-11-17 03:43:52,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.566358024691358 [2024-11-17 03:43:52,433 INFO L175 Difference]: Start difference. First operand has 88 places, 64 transitions, 317 flow. Second operand 9 states and 367 transitions. [2024-11-17 03:43:52,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 184 transitions, 1179 flow [2024-11-17 03:43:52,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 184 transitions, 1137 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:43:52,443 INFO L231 Difference]: Finished difference. Result has 96 places, 68 transitions, 364 flow [2024-11-17 03:43:52,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=364, PETRI_PLACES=96, PETRI_TRANSITIONS=68} [2024-11-17 03:43:52,444 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 34 predicate places. [2024-11-17 03:43:52,444 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 68 transitions, 364 flow [2024-11-17 03:43:52,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.5) internal successors, (390), 12 states have internal predecessors, (390), 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) [2024-11-17 03:43:52,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:52,445 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, 1, 1, 1] [2024-11-17 03:43:52,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 03:43:52,649 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,SelfDestructingSolverStorable15 [2024-11-17 03:43:52,650 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-17 03:43:52,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:52,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1390723229, now seen corresponding path program 1 times [2024-11-17 03:43:52,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:52,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523115239] [2024-11-17 03:43:52,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:52,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 03:43:52,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [893068277] [2024-11-17 03:43:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:52,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:52,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:52,691 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) [2024-11-17 03:43:52,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 03:43:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:52,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-17 03:43:52,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:53,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:58,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:58,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523115239] [2024-11-17 03:43:58,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 03:43:58,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893068277] [2024-11-17 03:43:58,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893068277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:58,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:43:58,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2024-11-17 03:43:58,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138284956] [2024-11-17 03:43:58,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:58,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 03:43:58,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:58,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 03:43:58,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-17 03:43:59,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 72 [2024-11-17 03:43:59,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 68 transitions, 364 flow. Second operand has 12 states, 12 states have (on average 30.333333333333332) internal successors, (364), 12 states have internal predecessors, (364), 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) [2024-11-17 03:43:59,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:59,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 72 [2024-11-17 03:43:59,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:44:01,596 INFO L124 PetriNetUnfolderBase]: 1895/4402 cut-off events. [2024-11-17 03:44:01,596 INFO L125 PetriNetUnfolderBase]: For 2965/2965 co-relation queries the response was YES. [2024-11-17 03:44:01,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10936 conditions, 4402 events. 1895/4402 cut-off events. For 2965/2965 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 21526 event pairs, 459 based on Foata normal form. 27/4361 useless extension candidates. Maximal degree in co-relation 10902. Up to 1314 conditions per place. [2024-11-17 03:44:01,615 INFO L140 encePairwiseOnDemand]: 68/72 looper letters, 154 selfloop transitions, 10 changer transitions 4/184 dead transitions. [2024-11-17 03:44:01,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 184 transitions, 1129 flow [2024-11-17 03:44:01,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 03:44:01,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 03:44:01,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 395 transitions. [2024-11-17 03:44:01,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2024-11-17 03:44:01,617 INFO L175 Difference]: Start difference. First operand has 96 places, 68 transitions, 364 flow. Second operand 10 states and 395 transitions. [2024-11-17 03:44:01,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 184 transitions, 1129 flow [2024-11-17 03:44:01,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 184 transitions, 1109 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-17 03:44:01,627 INFO L231 Difference]: Finished difference. Result has 104 places, 70 transitions, 390 flow [2024-11-17 03:44:01,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=390, PETRI_PLACES=104, PETRI_TRANSITIONS=70} [2024-11-17 03:44:01,628 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 42 predicate places. [2024-11-17 03:44:01,628 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 70 transitions, 390 flow [2024-11-17 03:44:01,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 30.333333333333332) internal successors, (364), 12 states have internal predecessors, (364), 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) [2024-11-17 03:44:01,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:44:01,629 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-11-17 03:44:01,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 03:44:01,832 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,SelfDestructingSolverStorable16 [2024-11-17 03:44:01,833 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-17 03:44:01,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:44:01,834 INFO L85 PathProgramCache]: Analyzing trace with hash -37572398, now seen corresponding path program 1 times [2024-11-17 03:44:01,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:44:01,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836637177] [2024-11-17 03:44:01,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:01,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:44:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 03:44:01,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872993310] [2024-11-17 03:44:01,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:01,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:44:01,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:44:01,900 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) [2024-11-17 03:44:01,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 03:44:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:44:02,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-17 03:44:02,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:44:03,228 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 15 treesize of output 11 [2024-11-17 03:44:03,468 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:44:03,469 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:44:04,049 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 105 treesize of output 97 [2024-11-17 03:44:04,081 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:44:04,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 97 treesize of output 274 [2024-11-17 03:44:04,751 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:44:04,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 290 treesize of output 244 [2024-11-17 03:44:09,483 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (mod c_~next~0 4294967296)) (.cse3 (select |c_#length| |c_~#buffer~0.base|)) (.cse1 (mod c_~first~0 4294967296))) (let ((.cse0 (+ |c_~#buffer~0.offset| .cse1)) (.cse2 (+ .cse3 4294967295)) (.cse6 (+ .cse5 |c_~#buffer~0.offset|)) (.cse4 (mod (+ c_~first~0 1) 4294967296))) (or (and (<= .cse0 4294967295) (or (< 2147483647 .cse1) (< .cse0 0))) (and (or (< .cse2 .cse0) (< .cse1 2147483648)) (<= .cse3 .cse0)) (and (<= (+ |c_~#buffer~0.offset| .cse4) 4294967295) (<= 2147483648 .cse4)) (and (or (< 2147483647 .cse5) (< .cse6 0)) (<= .cse6 4294967295)) (and (or (< .cse2 .cse6) (< .cse5 2147483648)) (<= .cse3 .cse6)) (let ((.cse19 (+ |c_t1Thread1of1ForFork0_~i~0#1| 1)) (.cse11 (mod (+ c_~next~0 1) 4294967296))) (let ((.cse15 (< (+ .cse11 |c_~#buffer~0.offset|) 4294967296)) (.cse12 (+ .cse5 1)) (.cse14 (< 2147483647 .cse11)) (.cse18 (mod .cse19 256))) (let ((.cse7 (< .cse18 128)) (.cse9 (= .cse18 (+ 257 |c_t1Thread1of1ForFork0_~i~0#1|))) (.cse13 (= .cse11 .cse4)) (.cse10 (forall ((v_z_6 Int)) (or (< 4294967295 v_z_6) (< (mod .cse11 v_z_6) 1) (< v_z_6 .cse12) .cse14))) (.cse16 (= .cse19 .cse18)) (.cse8 (forall ((v_z_6 Int)) (or (< 4294967295 v_z_6) (< (mod .cse11 v_z_6) 1) (< v_z_6 .cse12) .cse15))) (.cse17 (< 127 .cse18))) (and (or .cse7 .cse8 .cse9) (or .cse7 .cse10 .cse9) (forall ((v_z_6 Int)) (or (< 4294967295 v_z_6) (< (mod .cse11 v_z_6) 1) (< v_z_6 .cse12) .cse13 .cse14)) (forall ((v_z_6 Int)) (or (< 4294967295 v_z_6) (< (mod .cse11 v_z_6) 1) (< v_z_6 .cse12) .cse13 .cse15)) (or .cse16 .cse10 .cse17) (or .cse16 .cse8 .cse17)))))))) is different from false [2024-11-17 03:44:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-17 03:44:40,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:44:40,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836637177] [2024-11-17 03:44:40,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 03:44:40,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872993310] [2024-11-17 03:44:40,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872993310] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:44:40,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:44:40,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2024-11-17 03:44:40,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171375605] [2024-11-17 03:44:40,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:44:40,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-17 03:44:40,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:44:40,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-17 03:44:40,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=894, Unknown=8, NotChecked=62, Total=1122 [2024-11-17 03:44:40,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 72 [2024-11-17 03:44:40,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 70 transitions, 390 flow. Second operand has 34 states, 34 states have (on average 18.58823529411765) internal successors, (632), 34 states have internal predecessors, (632), 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) [2024-11-17 03:44:40,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:44:40,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 72 [2024-11-17 03:44:40,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:44:51,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-17 03:44:56,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1]