./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB --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 b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:15:14,932 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:15:15,032 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-27 20:15:15,044 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:15:15,044 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:15:15,086 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:15:15,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:15:15,088 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:15:15,089 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:15:15,089 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:15:15,089 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:15:15,090 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:15:15,091 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:15:15,091 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:15:15,091 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:15:15,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:15:15,092 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:15:15,092 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:15:15,092 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:15:15,092 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:15:15,092 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 20:15:15,093 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 20:15:15,093 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 20:15:15,093 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:15:15,093 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 20:15:15,094 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:15:15,094 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:15:15,094 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:15:15,094 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:15:15,094 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:15:15,094 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:15:15,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:15:15,095 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:15:15,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:15:15,095 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:15:15,095 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:15:15,096 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:15:15,096 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:15:15,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:15:15,096 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:15:15,097 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:15:15,097 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:15:15,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:15:15,097 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:15:15,097 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:15:15,097 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:15:15,097 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:15:15,097 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB 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 -> b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 [2024-11-27 20:15:15,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:15:15,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:15:15,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:15:15,413 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:15:15,413 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:15:15,415 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-11-27 20:15:18,373 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/data/b137cc13b/807801307096412790444c0154d0f62e/FLAG9ff2cdb0f [2024-11-27 20:15:18,668 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:15:18,669 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-11-27 20:15:18,693 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/data/b137cc13b/807801307096412790444c0154d0f62e/FLAG9ff2cdb0f [2024-11-27 20:15:18,711 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/data/b137cc13b/807801307096412790444c0154d0f62e [2024-11-27 20:15:18,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:15:18,716 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:15:18,718 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:15:18,718 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:15:18,724 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:15:18,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:15:18" (1/1) ... [2024-11-27 20:15:18,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b7e588b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:18, skipping insertion in model container [2024-11-27 20:15:18,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:15:18" (1/1) ... [2024-11-27 20:15:18,756 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:15:19,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:15:19,058 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:15:19,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:15:19,123 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:15:19,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:19 WrapperNode [2024-11-27 20:15:19,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:15:19,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:15:19,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:15:19,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:15:19,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:19" (1/1) ... [2024-11-27 20:15:19,147 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:19" (1/1) ... [2024-11-27 20:15:19,179 INFO L138 Inliner]: procedures = 22, calls = 23, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 98 [2024-11-27 20:15:19,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:15:19,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:15:19,180 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:15:19,180 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:15:19,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:19" (1/1) ... [2024-11-27 20:15:19,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:19" (1/1) ... [2024-11-27 20:15:19,197 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:19" (1/1) ... [2024-11-27 20:15:19,223 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:15:19,223 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:19" (1/1) ... [2024-11-27 20:15:19,223 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:19" (1/1) ... [2024-11-27 20:15:19,240 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:19" (1/1) ... [2024-11-27 20:15:19,241 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:19" (1/1) ... [2024-11-27 20:15:19,247 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:19" (1/1) ... [2024-11-27 20:15:19,249 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:19" (1/1) ... [2024-11-27 20:15:19,253 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:19" (1/1) ... [2024-11-27 20:15:19,256 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:15:19,257 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:15:19,257 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:15:19,257 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:15:19,260 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:19" (1/1) ... [2024-11-27 20:15:19,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:15:19,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:19,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:15:19,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:15:19,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:15:19,355 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 20:15:19,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 20:15:19,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 20:15:19,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 20:15:19,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-27 20:15:19,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-27 20:15:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-27 20:15:19,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-27 20:15:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:15:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-27 20:15:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-27 20:15:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:15:19,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:15:19,359 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:15:19,503 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:15:19,506 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:15:19,822 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:15:19,822 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:15:20,030 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:15:20,030 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 20:15:20,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:15:20 BoogieIcfgContainer [2024-11-27 20:15:20,031 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:15:20,036 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:15:20,036 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:15:20,045 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:15:20,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:15:18" (1/3) ... [2024-11-27 20:15:20,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f23aada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:15:20, skipping insertion in model container [2024-11-27 20:15:20,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:19" (2/3) ... [2024-11-27 20:15:20,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f23aada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:15:20, skipping insertion in model container [2024-11-27 20:15:20,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:15:20" (3/3) ... [2024-11-27 20:15:20,048 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2024-11-27 20:15:20,073 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:15:20,075 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-mult-4.wvr.c that has 5 procedures, 39 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2024-11-27 20:15:20,075 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:15:20,206 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-27 20:15:20,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 112 flow [2024-11-27 20:15:20,338 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-27 20:15:20,345 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-27 20:15:20,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 38 events. 4/38 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-27 20:15:20,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 112 flow [2024-11-27 20:15:20,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2024-11-27 20:15:20,363 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:15:20,380 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;@48ccaace, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:15:20,380 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-27 20:15:20,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:15:20,434 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-27 20:15:20,435 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-27 20:15:20,435 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:20,436 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:20,436 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 20:15:20,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:20,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1890896981, now seen corresponding path program 1 times [2024-11-27 20:15:20,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:20,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440171343] [2024-11-27 20:15:20,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:20,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:21,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:21,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440171343] [2024-11-27 20:15:21,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440171343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:21,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:21,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:15:21,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447806554] [2024-11-27 20:15:21,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:21,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:15:21,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:21,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:15:21,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:15:21,235 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-11-27 20:15:21,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-27 20:15:21,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:21,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-11-27 20:15:21,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:22,219 INFO L124 PetriNetUnfolderBase]: 3042/4201 cut-off events. [2024-11-27 20:15:22,219 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2024-11-27 20:15:22,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8601 conditions, 4201 events. 3042/4201 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 18321 event pairs, 763 based on Foata normal form. 126/4317 useless extension candidates. Maximal degree in co-relation 7595. Up to 3203 conditions per place. [2024-11-27 20:15:22,278 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 46 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-11-27 20:15:22,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 259 flow [2024-11-27 20:15:22,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:15:22,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:15:22,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-27 20:15:22,297 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2024-11-27 20:15:22,299 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 98 flow. Second operand 3 states and 85 transitions. [2024-11-27 20:15:22,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 259 flow [2024-11-27 20:15:22,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-27 20:15:22,317 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-11-27 20:15:22,320 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-27 20:15:22,325 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2024-11-27 20:15:22,325 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-11-27 20:15:22,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-27 20:15:22,326 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:22,326 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:22,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:15:22,327 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 20:15:22,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:22,328 INFO L85 PathProgramCache]: Analyzing trace with hash 98886588, now seen corresponding path program 1 times [2024-11-27 20:15:22,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:22,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088541744] [2024-11-27 20:15:22,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:22,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:22,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:22,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:22,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088541744] [2024-11-27 20:15:22,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088541744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:22,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:22,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:15:22,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993460138] [2024-11-27 20:15:22,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:22,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:15:22,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:22,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:15:22,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:15:22,803 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-27 20:15:22,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:22,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:22,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-27 20:15:22,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:24,662 INFO L124 PetriNetUnfolderBase]: 11922/15909 cut-off events. [2024-11-27 20:15:24,662 INFO L125 PetriNetUnfolderBase]: For 929/929 co-relation queries the response was YES. [2024-11-27 20:15:24,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33765 conditions, 15909 events. 11922/15909 cut-off events. For 929/929 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 80125 event pairs, 4318 based on Foata normal form. 0/12537 useless extension candidates. Maximal degree in co-relation 9444. Up to 8562 conditions per place. [2024-11-27 20:15:24,886 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 81 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-11-27 20:15:24,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 418 flow [2024-11-27 20:15:24,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:15:24,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:15:24,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-11-27 20:15:24,892 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-11-27 20:15:24,893 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 134 transitions. [2024-11-27 20:15:24,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 418 flow [2024-11-27 20:15:24,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 96 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:15:24,897 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 165 flow [2024-11-27 20:15:24,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2024-11-27 20:15:24,899 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2024-11-27 20:15:24,899 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 165 flow [2024-11-27 20:15:24,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:24,900 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:24,900 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:24,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:15:24,901 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 20:15:24,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:24,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1316254730, now seen corresponding path program 2 times [2024-11-27 20:15:24,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:24,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770606908] [2024-11-27 20:15:24,904 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:15:24,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:24,961 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:15:24,962 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:25,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:25,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:25,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770606908] [2024-11-27 20:15:25,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770606908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:25,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:25,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:15:25,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014062730] [2024-11-27 20:15:25,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:25,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:15:25,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:25,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:15:25,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:15:25,167 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-27 20:15:25,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-11-27 20:15:25,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:25,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-27 20:15:25,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:27,803 INFO L124 PetriNetUnfolderBase]: 17564/23591 cut-off events. [2024-11-27 20:15:27,803 INFO L125 PetriNetUnfolderBase]: For 10652/10730 co-relation queries the response was YES. [2024-11-27 20:15:27,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62097 conditions, 23591 events. 17564/23591 cut-off events. For 10652/10730 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 127642 event pairs, 3199 based on Foata normal form. 682/23853 useless extension candidates. Maximal degree in co-relation 35433. Up to 13004 conditions per place. [2024-11-27 20:15:27,969 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 85 selfloop transitions, 8 changer transitions 2/100 dead transitions. [2024-11-27 20:15:27,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 100 transitions, 538 flow [2024-11-27 20:15:27,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:15:27,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:15:27,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-11-27 20:15:27,975 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-11-27 20:15:27,975 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 165 flow. Second operand 4 states and 110 transitions. [2024-11-27 20:15:27,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 100 transitions, 538 flow [2024-11-27 20:15:28,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 100 transitions, 538 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 20:15:28,002 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 251 flow [2024-11-27 20:15:28,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2024-11-27 20:15:28,004 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2024-11-27 20:15:28,004 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 251 flow [2024-11-27 20:15:28,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-11-27 20:15:28,005 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:28,005 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:28,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:15:28,005 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 20:15:28,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:28,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1949206808, now seen corresponding path program 3 times [2024-11-27 20:15:28,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:28,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091970568] [2024-11-27 20:15:28,007 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:15:28,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:28,049 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:15:28,049 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:28,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:28,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:28,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091970568] [2024-11-27 20:15:28,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091970568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:28,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:28,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:15:28,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681866231] [2024-11-27 20:15:28,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:28,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:15:28,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:28,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:15:28,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:15:28,186 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-27 20:15:28,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 251 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-11-27 20:15:28,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:28,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-27 20:15:28,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:31,639 INFO L124 PetriNetUnfolderBase]: 23235/31045 cut-off events. [2024-11-27 20:15:31,639 INFO L125 PetriNetUnfolderBase]: For 29195/29271 co-relation queries the response was YES. [2024-11-27 20:15:31,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91489 conditions, 31045 events. 23235/31045 cut-off events. For 29195/29271 co-relation queries the response was YES. Maximal size of possible extension queue 1138. Compared 169244 event pairs, 6976 based on Foata normal form. 434/30873 useless extension candidates. Maximal degree in co-relation 34581. Up to 16023 conditions per place. [2024-11-27 20:15:31,952 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 89 selfloop transitions, 10 changer transitions 0/104 dead transitions. [2024-11-27 20:15:31,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 104 transitions, 632 flow [2024-11-27 20:15:31,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:15:31,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:15:31,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-11-27 20:15:31,955 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-11-27 20:15:31,955 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 251 flow. Second operand 4 states and 110 transitions. [2024-11-27 20:15:31,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 104 transitions, 632 flow [2024-11-27 20:15:31,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 104 transitions, 632 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 20:15:31,983 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 311 flow [2024-11-27 20:15:31,984 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=311, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2024-11-27 20:15:31,984 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2024-11-27 20:15:31,985 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 311 flow [2024-11-27 20:15:31,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-11-27 20:15:31,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:31,986 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:31,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:15:31,986 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 20:15:31,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:31,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1736628220, now seen corresponding path program 1 times [2024-11-27 20:15:31,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:31,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531428591] [2024-11-27 20:15:31,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:31,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:32,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:32,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531428591] [2024-11-27 20:15:32,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531428591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:32,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:32,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:15:32,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100716903] [2024-11-27 20:15:32,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:32,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:15:32,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:32,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:15:32,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:15:32,186 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-27 20:15:32,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 311 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:32,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:32,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-27 20:15:32,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:34,961 INFO L124 PetriNetUnfolderBase]: 25441/34161 cut-off events. [2024-11-27 20:15:34,961 INFO L125 PetriNetUnfolderBase]: For 60543/60565 co-relation queries the response was YES. [2024-11-27 20:15:35,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109303 conditions, 34161 events. 25441/34161 cut-off events. For 60543/60565 co-relation queries the response was YES. Maximal size of possible extension queue 1255. Compared 191636 event pairs, 7709 based on Foata normal form. 762/34084 useless extension candidates. Maximal degree in co-relation 46473. Up to 16362 conditions per place. [2024-11-27 20:15:35,192 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 92 selfloop transitions, 7 changer transitions 17/121 dead transitions. [2024-11-27 20:15:35,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 121 transitions, 848 flow [2024-11-27 20:15:35,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:15:35,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:15:35,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-11-27 20:15:35,194 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-27 20:15:35,194 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 311 flow. Second operand 5 states and 135 transitions. [2024-11-27 20:15:35,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 121 transitions, 848 flow [2024-11-27 20:15:35,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 121 transitions, 783 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-11-27 20:15:35,253 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 325 flow [2024-11-27 20:15:35,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=325, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-11-27 20:15:35,254 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2024-11-27 20:15:35,255 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 325 flow [2024-11-27 20:15:35,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:35,255 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:35,255 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:35,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:15:35,255 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 20:15:35,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:35,256 INFO L85 PathProgramCache]: Analyzing trace with hash -443786766, now seen corresponding path program 4 times [2024-11-27 20:15:35,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:35,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500081104] [2024-11-27 20:15:35,257 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:15:35,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:35,301 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:15:35,301 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:35,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:35,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500081104] [2024-11-27 20:15:35,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500081104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:35,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838749248] [2024-11-27 20:15:35,483 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:15:35,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:35,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:35,486 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:35,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:15:35,605 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:15:35,605 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:35,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:15:35,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:35,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:35,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838749248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:15:35,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:15:35,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-27 20:15:35,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148740675] [2024-11-27 20:15:35,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:35,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:15:35,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:35,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:15:35,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:15:35,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-27 20:15:35,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 325 flow. Second operand has 12 states, 12 states have (on average 11.5) internal successors, (138), 12 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:35,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:35,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-27 20:15:35,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:40,671 INFO L124 PetriNetUnfolderBase]: 29036/39339 cut-off events. [2024-11-27 20:15:40,671 INFO L125 PetriNetUnfolderBase]: For 79539/79563 co-relation queries the response was YES. [2024-11-27 20:15:40,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134361 conditions, 39339 events. 29036/39339 cut-off events. For 79539/79563 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 226773 event pairs, 1384 based on Foata normal form. 2938/41591 useless extension candidates. Maximal degree in co-relation 50338. Up to 8834 conditions per place. [2024-11-27 20:15:41,050 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 293 selfloop transitions, 103 changer transitions 12/413 dead transitions. [2024-11-27 20:15:41,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 413 transitions, 2748 flow [2024-11-27 20:15:41,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 20:15:41,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-27 20:15:41,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 598 transitions. [2024-11-27 20:15:41,053 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-27 20:15:41,053 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 325 flow. Second operand 23 states and 598 transitions. [2024-11-27 20:15:41,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 413 transitions, 2748 flow [2024-11-27 20:15:41,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 413 transitions, 2604 flow, removed 54 selfloop flow, removed 2 redundant places. [2024-11-27 20:15:41,104 INFO L231 Difference]: Finished difference. Result has 97 places, 139 transitions, 1296 flow [2024-11-27 20:15:41,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1296, PETRI_PLACES=97, PETRI_TRANSITIONS=139} [2024-11-27 20:15:41,105 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2024-11-27 20:15:41,105 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 139 transitions, 1296 flow [2024-11-27 20:15:41,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.5) internal successors, (138), 12 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:41,105 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:41,105 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:41,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:15:41,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-27 20:15:41,310 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 20:15:41,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:41,311 INFO L85 PathProgramCache]: Analyzing trace with hash 453125478, now seen corresponding path program 1 times [2024-11-27 20:15:41,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:41,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174170316] [2024-11-27 20:15:41,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:41,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:41,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:15:41,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:41,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174170316] [2024-11-27 20:15:41,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174170316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:41,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:41,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:15:41,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296191536] [2024-11-27 20:15:41,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:41,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:15:41,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:41,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:15:41,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:15:41,512 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-27 20:15:41,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 139 transitions, 1296 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-27 20:15:41,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:41,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-27 20:15:41,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:15:48,209 INFO L124 PetriNetUnfolderBase]: 41577/56498 cut-off events. [2024-11-27 20:15:48,212 INFO L125 PetriNetUnfolderBase]: For 480707/481375 co-relation queries the response was YES. [2024-11-27 20:15:48,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277003 conditions, 56498 events. 41577/56498 cut-off events. For 480707/481375 co-relation queries the response was YES. Maximal size of possible extension queue 1789. Compared 340605 event pairs, 14070 based on Foata normal form. 988/55961 useless extension candidates. Maximal degree in co-relation 201575. Up to 28697 conditions per place. [2024-11-27 20:15:48,875 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 254 selfloop transitions, 23 changer transitions 16/298 dead transitions. [2024-11-27 20:15:48,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 298 transitions, 3368 flow [2024-11-27 20:15:48,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:15:48,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:15:48,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-11-27 20:15:48,877 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-11-27 20:15:48,877 INFO L175 Difference]: Start difference. First operand has 97 places, 139 transitions, 1296 flow. Second operand 5 states and 125 transitions. [2024-11-27 20:15:48,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 298 transitions, 3368 flow [2024-11-27 20:15:56,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 298 transitions, 2873 flow, removed 123 selfloop flow, removed 6 redundant places. [2024-11-27 20:15:56,108 INFO L231 Difference]: Finished difference. Result has 95 places, 149 transitions, 1289 flow [2024-11-27 20:15:56,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1289, PETRI_PLACES=95, PETRI_TRANSITIONS=149} [2024-11-27 20:15:56,110 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2024-11-27 20:15:56,110 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 149 transitions, 1289 flow [2024-11-27 20:15:56,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-27 20:15:56,110 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:15:56,110 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:56,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:15:56,111 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 20:15:56,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:56,112 INFO L85 PathProgramCache]: Analyzing trace with hash -510248280, now seen corresponding path program 2 times [2024-11-27 20:15:56,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:56,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602836949] [2024-11-27 20:15:56,112 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:15:56,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:56,145 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:15:56,145 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:56,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:56,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:56,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602836949] [2024-11-27 20:15:56,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602836949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:56,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988802064] [2024-11-27 20:15:56,348 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:15:56,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:56,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:56,352 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:56,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:15:56,456 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:15:56,457 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:15:56,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:15:56,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:56,552 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:56,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988802064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:56,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:15:56,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2024-11-27 20:15:56,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121685054] [2024-11-27 20:15:56,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:56,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:15:56,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:56,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:15:56,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:15:56,578 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-27 20:15:56,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 149 transitions, 1289 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-27 20:15:56,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:15:56,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-27 20:15:56,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:16:03,807 INFO L124 PetriNetUnfolderBase]: 50217/67699 cut-off events. [2024-11-27 20:16:03,807 INFO L125 PetriNetUnfolderBase]: For 675966/676558 co-relation queries the response was YES. [2024-11-27 20:16:04,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349563 conditions, 67699 events. 50217/67699 cut-off events. For 675966/676558 co-relation queries the response was YES. Maximal size of possible extension queue 2285. Compared 412325 event pairs, 14987 based on Foata normal form. 524/65991 useless extension candidates. Maximal degree in co-relation 320397. Up to 40124 conditions per place. [2024-11-27 20:16:04,672 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 218 selfloop transitions, 35 changer transitions 3/261 dead transitions. [2024-11-27 20:16:04,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 261 transitions, 2888 flow [2024-11-27 20:16:04,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:16:04,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:16:04,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-27 20:16:04,674 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-11-27 20:16:04,674 INFO L175 Difference]: Start difference. First operand has 95 places, 149 transitions, 1289 flow. Second operand 5 states and 123 transitions. [2024-11-27 20:16:04,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 261 transitions, 2888 flow [2024-11-27 20:16:18,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 261 transitions, 2812 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-11-27 20:16:18,458 INFO L231 Difference]: Finished difference. Result has 99 places, 168 transitions, 1529 flow [2024-11-27 20:16:18,458 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1529, PETRI_PLACES=99, PETRI_TRANSITIONS=168} [2024-11-27 20:16:18,459 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 53 predicate places. [2024-11-27 20:16:18,459 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 168 transitions, 1529 flow [2024-11-27 20:16:18,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-27 20:16:18,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:16:18,459 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:18,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:16:18,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d834cd3-af95-4094-b05b-48fdaa9e6530/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-27 20:16:18,660 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 20:16:18,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:18,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1537408186, now seen corresponding path program 3 times [2024-11-27 20:16:18,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:18,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891866709] [2024-11-27 20:16:18,661 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:16:18,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:16:18,683 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:16:18,683 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:16:18,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:18,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:16:18,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891866709] [2024-11-27 20:16:18,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891866709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:16:18,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:16:18,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:16:18,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624722064] [2024-11-27 20:16:18,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:16:18,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:16:18,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:16:18,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:16:18,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:16:18,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-27 20:16:18,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 168 transitions, 1529 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:18,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:16:18,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-27 20:16:18,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:16:26,978 INFO L124 PetriNetUnfolderBase]: 54621/74017 cut-off events. [2024-11-27 20:16:26,978 INFO L125 PetriNetUnfolderBase]: For 813368/813538 co-relation queries the response was YES. [2024-11-27 20:16:27,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394780 conditions, 74017 events. 54621/74017 cut-off events. For 813368/813538 co-relation queries the response was YES. Maximal size of possible extension queue 2484. Compared 456337 event pairs, 16768 based on Foata normal form. 1522/73783 useless extension candidates. Maximal degree in co-relation 319138. Up to 36012 conditions per place. [2024-11-27 20:16:27,625 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 322 selfloop transitions, 88 changer transitions 3/418 dead transitions. [2024-11-27 20:16:27,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 418 transitions, 4785 flow [2024-11-27 20:16:27,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:16:27,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:16:27,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-11-27 20:16:27,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2024-11-27 20:16:27,626 INFO L175 Difference]: Start difference. First operand has 99 places, 168 transitions, 1529 flow. Second operand 6 states and 152 transitions. [2024-11-27 20:16:27,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 418 transitions, 4785 flow