./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml', '-i', '../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/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) )\nCHECK( init(main()), LTL(G valid-deref) )\nCHECK( init(main()), LTL(G valid-memtrack) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '801883caffd8b582a36607f9ec62109ac5c5dc10c811693a281fb396b4b60131'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 801883caffd8b582a36607f9ec62109ac5c5dc10c811693a281fb396b4b60131 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:09:29,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:09:29,826 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:09:29,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:09:29,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:09:29,856 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:09:29,857 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:09:29,857 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:09:29,857 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:09:29,857 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:09:29,857 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:09:29,857 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:09:29,858 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:09:29,858 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:09:29,858 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:09:29,858 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:09:29,858 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:09:29,858 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:09:29,858 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:09:29,858 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:09:29,858 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:09:29,858 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:09:29,858 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:09:29,858 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:09:29,858 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:09:29,858 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:09:29,858 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:09:29,858 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:09:29,858 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:09:29,859 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:09:29,859 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:09:29,859 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:09:29,859 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:09:29,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:09:29,859 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:09:29,859 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:09:29,859 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:09:29,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:09:29,860 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:09:29,860 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:09:29,860 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:09:29,860 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:09:29,860 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 801883caffd8b582a36607f9ec62109ac5c5dc10c811693a281fb396b4b60131 [2024-11-07 19:09:30,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:09:30,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:09:30,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:09:30,099 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:09:30,099 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:09:30,100 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2024-11-07 19:09:31,308 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:09:31,628 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:09:31,630 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2024-11-07 19:09:31,643 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a9c1917e4/0eb2606e92a04aed99e3a3083fd7394d/FLAG830e48b03 [2024-11-07 19:09:31,893 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a9c1917e4/0eb2606e92a04aed99e3a3083fd7394d [2024-11-07 19:09:31,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:09:31,898 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:09:31,899 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:09:31,899 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:09:31,902 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:09:31,903 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:09:31" (1/1) ... [2024-11-07 19:09:31,903 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@edf0628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:09:31, skipping insertion in model container [2024-11-07 19:09:31,903 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:09:31" (1/1) ... [2024-11-07 19:09:31,927 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:09:32,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:09:32,144 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:09:32,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:09:32,212 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:09:32,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:09:32 WrapperNode [2024-11-07 19:09:32,213 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:09:32,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:09:32,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:09:32,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:09:32,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:09:32" (1/1) ... [2024-11-07 19:09:32,225 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:09:32" (1/1) ... [2024-11-07 19:09:32,238 INFO L138 Inliner]: procedures = 164, calls = 17, calls flagged for inlining = 4, calls inlined = 5, statements flattened = 67 [2024-11-07 19:09:32,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:09:32,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:09:32,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:09:32,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:09:32,244 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:09:32" (1/1) ... [2024-11-07 19:09:32,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:09:32" (1/1) ... [2024-11-07 19:09:32,246 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:09:32" (1/1) ... [2024-11-07 19:09:32,255 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-07 19:09:32,255 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:09:32" (1/1) ... [2024-11-07 19:09:32,256 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:09:32" (1/1) ... [2024-11-07 19:09:32,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:09:32" (1/1) ... [2024-11-07 19:09:32,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:09:32" (1/1) ... [2024-11-07 19:09:32,271 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:09:32" (1/1) ... [2024-11-07 19:09:32,272 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:09:32" (1/1) ... [2024-11-07 19:09:32,275 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:09:32,275 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:09:32,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:09:32,276 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:09:32,276 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:09:32" (1/1) ... [2024-11-07 19:09:32,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:09:32,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:09:32,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 19:09:32,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 19:09:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-07 19:09:32,334 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-07 19:09:32,334 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-07 19:09:32,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:09:32,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:09:32,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 19:09:32,335 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-07 19:09:32,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:09:32,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:09:32,336 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-07 19:09:32,444 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:09:32,446 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:09:32,583 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:09:32,585 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:09:32,672 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:09:32,672 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-07 19:09:32,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:09:32 BoogieIcfgContainer [2024-11-07 19:09:32,673 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:09:32,675 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:09:32,675 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:09:32,678 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:09:32,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:09:31" (1/3) ... [2024-11-07 19:09:32,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f0f8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:09:32, skipping insertion in model container [2024-11-07 19:09:32,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:09:32" (2/3) ... [2024-11-07 19:09:32,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f0f8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:09:32, skipping insertion in model container [2024-11-07 19:09:32,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:09:32" (3/3) ... [2024-11-07 19:09:32,680 INFO L112 eAbstractionObserver]: Analyzing ICFG 48_ticket_lock_low_contention_vs-pthread.i [2024-11-07 19:09:32,698 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:09:32,698 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-07 19:09:32,699 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:09:32,773 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:09:32,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 35 transitions, 74 flow [2024-11-07 19:09:32,832 INFO L124 PetriNetUnfolderBase]: 8/54 cut-off events. [2024-11-07 19:09:32,836 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:09:32,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 54 events. 8/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 150 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 32. Up to 4 conditions per place. [2024-11-07 19:09:32,839 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 35 transitions, 74 flow [2024-11-07 19:09:32,842 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 35 transitions, 74 flow [2024-11-07 19:09:32,850 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:09:32,858 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;@3d13b9b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:09:32,860 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-07 19:09:32,869 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:09:32,871 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-11-07 19:09:32,871 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:09:32,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:09:32,872 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-07 19:09:32,872 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2024-11-07 19:09:32,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:09:32,876 INFO L85 PathProgramCache]: Analyzing trace with hash 157571686, now seen corresponding path program 1 times [2024-11-07 19:09:32,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:09:32,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741892565] [2024-11-07 19:09:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:09:32,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:09:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:09:32,959 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:09:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:09:32,992 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:09:32,993 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:09:32,994 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-07 19:09:32,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-07 19:09:32,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-07 19:09:32,997 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-07 19:09:32,997 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-07 19:09:32,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:09:32,998 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-07 19:09:33,000 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:09:33,002 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-07 19:09:33,020 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:09:33,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 108 flow [2024-11-07 19:09:33,040 INFO L124 PetriNetUnfolderBase]: 13/87 cut-off events. [2024-11-07 19:09:33,041 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:09:33,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 87 events. 13/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 306 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 56. Up to 6 conditions per place. [2024-11-07 19:09:33,042 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 108 flow [2024-11-07 19:09:33,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 49 transitions, 108 flow [2024-11-07 19:09:33,043 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:09:33,044 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;@3d13b9b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:09:33,044 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-07 19:09:33,048 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:09:33,048 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-07 19:09:33,048 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 19:09:33,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:09:33,048 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:09:33,049 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-11-07 19:09:33,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:09:33,049 INFO L85 PathProgramCache]: Analyzing trace with hash 743436492, now seen corresponding path program 1 times [2024-11-07 19:09:33,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:09:33,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732497774] [2024-11-07 19:09:33,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:09:33,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:09:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:09:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:09:33,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:09:33,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732497774] [2024-11-07 19:09:33,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732497774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:09:33,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:09:33,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:09:33,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377148125] [2024-11-07 19:09:33,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:09:33,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 19:09:33,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:09:33,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 19:09:33,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 19:09:33,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-07 19:09:33,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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) [2024-11-07 19:09:33,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:09:33,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-07 19:09:33,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:09:33,377 INFO L124 PetriNetUnfolderBase]: 680/1512 cut-off events. [2024-11-07 19:09:33,378 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-07 19:09:33,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2689 conditions, 1512 events. 680/1512 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10268 event pairs, 680 based on Foata normal form. 354/1782 useless extension candidates. Maximal degree in co-relation 1927. Up to 1154 conditions per place. [2024-11-07 19:09:33,394 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 23 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2024-11-07 19:09:33,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 134 flow [2024-11-07 19:09:33,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 19:09:33,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-07 19:09:33,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2024-11-07 19:09:33,403 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2024-11-07 19:09:33,405 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 108 flow. Second operand 2 states and 62 transitions. [2024-11-07 19:09:33,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 134 flow [2024-11-07 19:09:33,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:09:33,413 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 88 flow [2024-11-07 19:09:33,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-11-07 19:09:33,422 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2024-11-07 19:09:33,423 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 88 flow [2024-11-07 19:09:33,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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) [2024-11-07 19:09:33,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:09:33,423 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:09:33,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 19:09:33,423 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-11-07 19:09:33,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:09:33,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1986174764, now seen corresponding path program 1 times [2024-11-07 19:09:33,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:09:33,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222355982] [2024-11-07 19:09:33,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:09:33,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:09:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:09:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:09:33,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:09:33,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222355982] [2024-11-07 19:09:33,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222355982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:09:33,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:09:33,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:09:33,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417043266] [2024-11-07 19:09:33,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:09:33,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:09:33,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:09:33,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:09:33,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:09:33,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-07 19:09:33,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-11-07 19:09:33,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:09:33,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-07 19:09:33,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:09:33,819 INFO L124 PetriNetUnfolderBase]: 1080/2300 cut-off events. [2024-11-07 19:09:33,819 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-07 19:09:33,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4146 conditions, 2300 events. 1080/2300 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 16251 event pairs, 687 based on Foata normal form. 206/2448 useless extension candidates. Maximal degree in co-relation 4141. Up to 1386 conditions per place. [2024-11-07 19:09:33,828 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 41 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2024-11-07 19:09:33,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 229 flow [2024-11-07 19:09:33,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:09:33,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:09:33,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-07 19:09:33,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6054421768707483 [2024-11-07 19:09:33,830 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 88 flow. Second operand 3 states and 89 transitions. [2024-11-07 19:09:33,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 229 flow [2024-11-07 19:09:33,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 229 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:09:33,832 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 142 flow [2024-11-07 19:09:33,832 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-11-07 19:09:33,833 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-07 19:09:33,833 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 142 flow [2024-11-07 19:09:33,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-11-07 19:09:33,833 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:09:33,834 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1] [2024-11-07 19:09:33,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 19:09:33,834 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-11-07 19:09:33,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:09:33,834 INFO L85 PathProgramCache]: Analyzing trace with hash 547898454, now seen corresponding path program 1 times [2024-11-07 19:09:33,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:09:33,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018808888] [2024-11-07 19:09:33,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:09:33,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:09:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:09:33,845 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:09:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:09:33,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:09:33,859 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:09:33,860 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-07 19:09:33,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-07 19:09:33,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-07 19:09:33,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-07 19:09:33,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-07 19:09:33,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-07 19:09:33,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 19:09:33,860 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-07 19:09:33,860 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:09:33,860 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-07 19:09:33,884 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:09:33,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 63 transitions, 144 flow [2024-11-07 19:09:33,895 INFO L124 PetriNetUnfolderBase]: 18/120 cut-off events. [2024-11-07 19:09:33,895 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-07 19:09:33,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 120 events. 18/120 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 473 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 93. Up to 8 conditions per place. [2024-11-07 19:09:33,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 63 transitions, 144 flow [2024-11-07 19:09:33,899 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 63 transitions, 144 flow [2024-11-07 19:09:33,899 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:09:33,900 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;@3d13b9b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:09:33,900 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-07 19:09:33,904 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:09:33,904 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-07 19:09:33,904 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 19:09:33,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:09:33,904 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:09:33,904 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-07 19:09:33,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:09:33,905 INFO L85 PathProgramCache]: Analyzing trace with hash 813252684, now seen corresponding path program 1 times [2024-11-07 19:09:33,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:09:33,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981135338] [2024-11-07 19:09:33,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:09:33,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:09:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:09:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:09:33,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:09:33,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981135338] [2024-11-07 19:09:33,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981135338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:09:33,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:09:33,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:09:33,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221632082] [2024-11-07 19:09:33,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:09:33,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 19:09:33,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:09:33,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 19:09:33,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 19:09:33,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-11-07 19:09:33,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 144 flow. Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 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) [2024-11-07 19:09:33,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:09:33,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-11-07 19:09:33,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:09:34,820 INFO L124 PetriNetUnfolderBase]: 6440/11494 cut-off events. [2024-11-07 19:09:34,820 INFO L125 PetriNetUnfolderBase]: For 278/278 co-relation queries the response was YES. [2024-11-07 19:09:34,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20952 conditions, 11494 events. 6440/11494 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 91646 event pairs, 6440 based on Foata normal form. 3066/14061 useless extension candidates. Maximal degree in co-relation 4459. Up to 9290 conditions per place. [2024-11-07 19:09:34,894 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 29 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2024-11-07 19:09:34,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 176 flow [2024-11-07 19:09:34,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 19:09:34,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-07 19:09:34,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-11-07 19:09:34,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-11-07 19:09:34,896 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 144 flow. Second operand 2 states and 80 transitions. [2024-11-07 19:09:34,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 176 flow [2024-11-07 19:09:34,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 50 transitions, 174 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-07 19:09:34,898 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 116 flow [2024-11-07 19:09:34,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=116, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-11-07 19:09:34,899 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-11-07 19:09:34,899 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 116 flow [2024-11-07 19:09:34,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 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) [2024-11-07 19:09:34,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:09:34,900 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:09:34,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 19:09:34,900 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-07 19:09:34,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:09:34,900 INFO L85 PathProgramCache]: Analyzing trace with hash 178127251, now seen corresponding path program 1 times [2024-11-07 19:09:34,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:09:34,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324110923] [2024-11-07 19:09:34,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:09:34,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:09:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:09:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:09:34,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:09:34,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324110923] [2024-11-07 19:09:34,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324110923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:09:34,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:09:34,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:09:34,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140753042] [2024-11-07 19:09:34,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:09:34,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:09:34,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:09:34,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:09:34,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:09:35,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 63 [2024-11-07 19:09:35,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:09:35,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:09:35,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 63 [2024-11-07 19:09:35,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:09:36,693 INFO L124 PetriNetUnfolderBase]: 13477/23774 cut-off events. [2024-11-07 19:09:36,695 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-11-07 19:09:36,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43372 conditions, 23774 events. 13477/23774 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 206991 event pairs, 8161 based on Foata normal form. 2081/25389 useless extension candidates. Maximal degree in co-relation 43366. Up to 14060 conditions per place. [2024-11-07 19:09:36,824 INFO L140 encePairwiseOnDemand]: 51/63 looper letters, 52 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2024-11-07 19:09:36,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 300 flow [2024-11-07 19:09:36,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:09:36,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:09:36,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-11-07 19:09:36,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6084656084656085 [2024-11-07 19:09:36,831 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 116 flow. Second operand 3 states and 115 transitions. [2024-11-07 19:09:36,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 300 flow [2024-11-07 19:09:36,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 77 transitions, 300 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:09:36,834 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 188 flow [2024-11-07 19:09:36,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-07 19:09:36,836 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-07 19:09:36,836 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 188 flow [2024-11-07 19:09:36,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:09:36,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:09:36,837 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:09:36,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 19:09:36,837 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-07 19:09:36,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:09:36,838 INFO L85 PathProgramCache]: Analyzing trace with hash -618648839, now seen corresponding path program 1 times [2024-11-07 19:09:36,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:09:36,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889956547] [2024-11-07 19:09:36,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:09:36,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:09:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:09:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:09:36,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:09:36,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889956547] [2024-11-07 19:09:36,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889956547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:09:36,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:09:36,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:09:36,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572535698] [2024-11-07 19:09:36,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:09:36,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:09:36,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:09:36,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:09:36,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:09:36,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 63 [2024-11-07 19:09:36,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:09:36,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:09:36,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 63 [2024-11-07 19:09:36,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:09:38,199 INFO L124 PetriNetUnfolderBase]: 10881/20172 cut-off events. [2024-11-07 19:09:38,200 INFO L125 PetriNetUnfolderBase]: For 7378/7528 co-relation queries the response was YES. [2024-11-07 19:09:38,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44689 conditions, 20172 events. 10881/20172 cut-off events. For 7378/7528 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 180863 event pairs, 9371 based on Foata normal form. 127/19604 useless extension candidates. Maximal degree in co-relation 44681. Up to 14599 conditions per place. [2024-11-07 19:09:38,334 INFO L140 encePairwiseOnDemand]: 61/63 looper letters, 32 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2024-11-07 19:09:38,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 252 flow [2024-11-07 19:09:38,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:09:38,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:09:38,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-11-07 19:09:38,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-11-07 19:09:38,336 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 188 flow. Second operand 3 states and 90 transitions. [2024-11-07 19:09:38,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 252 flow [2024-11-07 19:09:38,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:09:38,356 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 172 flow [2024-11-07 19:09:38,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-11-07 19:09:38,356 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-07 19:09:38,356 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 172 flow [2024-11-07 19:09:38,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:09:38,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:09:38,357 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2024-11-07 19:09:38,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 19:09:38,357 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-07 19:09:38,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:09:38,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1328592853, now seen corresponding path program 1 times [2024-11-07 19:09:38,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:09:38,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799365784] [2024-11-07 19:09:38,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:09:38,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:09:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:09:38,367 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:09:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:09:38,375 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:09:38,376 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:09:38,376 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-07 19:09:38,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-07 19:09:38,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-11-07 19:09:38,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-07 19:09:38,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-07 19:09:38,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-07 19:09:38,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-07 19:09:38,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 19:09:38,377 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-07 19:09:38,377 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:09:38,377 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-07 19:09:38,403 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:09:38,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 77 transitions, 182 flow [2024-11-07 19:09:38,413 INFO L124 PetriNetUnfolderBase]: 23/153 cut-off events. [2024-11-07 19:09:38,413 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-07 19:09:38,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 153 events. 23/153 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 621 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 131. Up to 10 conditions per place. [2024-11-07 19:09:38,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 77 transitions, 182 flow [2024-11-07 19:09:38,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 77 transitions, 182 flow [2024-11-07 19:09:38,416 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:09:38,417 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;@3d13b9b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:09:38,417 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-07 19:09:38,419 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:09:38,419 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-07 19:09:38,419 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 19:09:38,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:09:38,419 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:09:38,419 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-07 19:09:38,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:09:38,420 INFO L85 PathProgramCache]: Analyzing trace with hash -533072180, now seen corresponding path program 1 times [2024-11-07 19:09:38,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:09:38,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554912621] [2024-11-07 19:09:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:09:38,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:09:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:09:38,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:09:38,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:09:38,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554912621] [2024-11-07 19:09:38,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554912621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:09:38,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:09:38,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:09:38,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075019191] [2024-11-07 19:09:38,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:09:38,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 19:09:38,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:09:38,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 19:09:38,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 19:09:38,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-07 19:09:38,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:09:38,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:09:38,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-07 19:09:38,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:09:42,407 INFO L124 PetriNetUnfolderBase]: 52880/83510 cut-off events. [2024-11-07 19:09:42,408 INFO L125 PetriNetUnfolderBase]: For 3018/3018 co-relation queries the response was YES. [2024-11-07 19:09:42,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154745 conditions, 83510 events. 52880/83510 cut-off events. For 3018/3018 co-relation queries the response was YES. Maximal size of possible extension queue 3449. Compared 738053 event pairs, 52880 based on Foata normal form. 24138/104741 useless extension candidates. Maximal degree in co-relation 21051. Up to 69986 conditions per place. [2024-11-07 19:09:42,977 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 35 selfloop transitions, 0 changer transitions 0/61 dead transitions. [2024-11-07 19:09:42,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 61 transitions, 220 flow [2024-11-07 19:09:42,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 19:09:42,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-07 19:09:42,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 98 transitions. [2024-11-07 19:09:42,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-07 19:09:42,978 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 182 flow. Second operand 2 states and 98 transitions. [2024-11-07 19:09:42,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 61 transitions, 220 flow [2024-11-07 19:09:42,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 61 transitions, 214 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-07 19:09:42,981 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 144 flow [2024-11-07 19:09:42,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=144, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2024-11-07 19:09:42,982 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -4 predicate places. [2024-11-07 19:09:42,982 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 144 flow [2024-11-07 19:09:42,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:09:42,982 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:09:42,982 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:09:42,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 19:09:42,983 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-07 19:09:42,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:09:42,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1391729504, now seen corresponding path program 1 times [2024-11-07 19:09:42,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:09:42,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460089042] [2024-11-07 19:09:42,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:09:42,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:09:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:09:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:09:43,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:09:43,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460089042] [2024-11-07 19:09:43,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460089042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:09:43,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:09:43,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:09:43,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045036672] [2024-11-07 19:09:43,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:09:43,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:09:43,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:09:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:09:43,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:09:43,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-11-07 19:09:43,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:09:43,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:09:43,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-11-07 19:09:43,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:09:53,417 INFO L124 PetriNetUnfolderBase]: 141969/224625 cut-off events. [2024-11-07 19:09:53,417 INFO L125 PetriNetUnfolderBase]: For 2050/2050 co-relation queries the response was YES. [2024-11-07 19:09:54,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414310 conditions, 224625 events. 141969/224625 cut-off events. For 2050/2050 co-relation queries the response was YES. Maximal size of possible extension queue 8636. Compared 2193521 event pairs, 82899 based on Foata normal form. 19479/240392 useless extension candidates. Maximal degree in co-relation 414303. Up to 130411 conditions per place. [2024-11-07 19:09:54,956 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 63 selfloop transitions, 10 changer transitions 0/94 dead transitions. [2024-11-07 19:09:54,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 371 flow [2024-11-07 19:09:54,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:09:54,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:09:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-11-07 19:09:54,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6103896103896104 [2024-11-07 19:09:54,957 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 144 flow. Second operand 3 states and 141 transitions. [2024-11-07 19:09:54,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 371 flow [2024-11-07 19:09:54,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 94 transitions, 371 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:09:54,963 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 234 flow [2024-11-07 19:09:54,963 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2024-11-07 19:09:54,963 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2024-11-07 19:09:54,966 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 234 flow [2024-11-07 19:09:54,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:09:54,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:09:54,966 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:09:54,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 19:09:54,966 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-07 19:09:54,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:09:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1716981542, now seen corresponding path program 1 times [2024-11-07 19:09:54,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:09:54,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900243321] [2024-11-07 19:09:54,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:09:54,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:09:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:09:54,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:09:54,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:09:54,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900243321] [2024-11-07 19:09:54,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900243321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:09:54,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:09:54,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:09:54,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536890458] [2024-11-07 19:09:54,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:09:54,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:09:54,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:09:54,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:09:54,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:09:55,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 77 [2024-11-07 19:09:55,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:09:55,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:09:55,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 77 [2024-11-07 19:09:55,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:10:05,602 INFO L124 PetriNetUnfolderBase]: 117405/192139 cut-off events. [2024-11-07 19:10:05,602 INFO L125 PetriNetUnfolderBase]: For 69658/70744 co-relation queries the response was YES. [2024-11-07 19:10:06,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432668 conditions, 192139 events. 117405/192139 cut-off events. For 69658/70744 co-relation queries the response was YES. Maximal size of possible extension queue 7913. Compared 1939272 event pairs, 99665 based on Foata normal form. 783/187295 useless extension candidates. Maximal degree in co-relation 432659. Up to 142201 conditions per place.