./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX --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 fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:41:23,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:41:24,118 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 16:41:24,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:41:24,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:41:24,175 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:41:24,176 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:41:24,176 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:41:24,177 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:41:24,178 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:41:24,178 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:41:24,179 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:41:24,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:41:24,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:41:24,180 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:41:24,181 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:41:24,181 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:41:24,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:41:24,187 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:41:24,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:41:24,187 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 16:41:24,192 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 16:41:24,192 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 16:41:24,192 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:41:24,193 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 16:41:24,193 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:41:24,193 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:41:24,194 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:41:24,194 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:41:24,194 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:41:24,195 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:41:24,195 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:41:24,200 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:41:24,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:41:24,201 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:41:24,201 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:41:24,201 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:41:24,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:41:24,205 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:41:24,205 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:41:24,205 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:41:24,206 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:41:24,206 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea [2024-11-08 16:41:24,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:41:24,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:41:24,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:41:24,587 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:41:24,587 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:41:24,589 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c Unable to find full path for "g++" [2024-11-08 16:41:27,097 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:41:27,328 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:41:27,329 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2024-11-08 16:41:27,338 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/data/f92848965/bb2bba151b1c4564891bd36aa45e2b78/FLAGaadfe57b6 [2024-11-08 16:41:27,357 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/data/f92848965/bb2bba151b1c4564891bd36aa45e2b78 [2024-11-08 16:41:27,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:41:27,363 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:41:27,364 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:41:27,365 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:41:27,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:41:27,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:41:27" (1/1) ... [2024-11-08 16:41:27,375 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a13ed4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:27, skipping insertion in model container [2024-11-08 16:41:27,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:41:27" (1/1) ... [2024-11-08 16:41:27,432 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:41:27,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:41:27,790 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:41:27,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:41:27,838 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:41:27,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:27 WrapperNode [2024-11-08 16:41:27,839 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:41:27,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:41:27,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:41:27,840 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:41:27,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:27" (1/1) ... [2024-11-08 16:41:27,863 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:27" (1/1) ... [2024-11-08 16:41:27,882 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2024-11-08 16:41:27,883 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:41:27,884 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:41:27,884 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:41:27,884 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:41:27,901 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:27" (1/1) ... [2024-11-08 16:41:27,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:27" (1/1) ... [2024-11-08 16:41:27,903 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:27" (1/1) ... [2024-11-08 16:41:27,920 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]. [2024-11-08 16:41:27,920 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:27" (1/1) ... [2024-11-08 16:41:27,921 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:27" (1/1) ... [2024-11-08 16:41:27,926 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:27" (1/1) ... [2024-11-08 16:41:27,931 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:27" (1/1) ... [2024-11-08 16:41:27,932 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:27" (1/1) ... [2024-11-08 16:41:27,934 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:27" (1/1) ... [2024-11-08 16:41:27,936 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:41:27,937 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:41:27,938 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:41:27,938 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:41:27,939 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:27" (1/1) ... [2024-11-08 16:41:27,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:41:27,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:41:27,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:41:27,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:41:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:41:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 16:41:28,041 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 16:41:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 16:41:28,041 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 16:41:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:41:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 16:41:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 16:41:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:41:28,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:41:28,047 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 16:41:28,197 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:41:28,200 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:41:28,473 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:41:28,474 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:41:28,655 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:41:28,655 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:41:28,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:41:28 BoogieIcfgContainer [2024-11-08 16:41:28,656 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:41:28,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:41:28,660 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:41:28,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:41:28,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:41:27" (1/3) ... [2024-11-08 16:41:28,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f2de86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:41:28, skipping insertion in model container [2024-11-08 16:41:28,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:41:27" (2/3) ... [2024-11-08 16:41:28,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f2de86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:41:28, skipping insertion in model container [2024-11-08 16:41:28,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:41:28" (3/3) ... [2024-11-08 16:41:28,670 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2024-11-08 16:41:28,695 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:41:28,695 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 16:41:28,696 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:41:28,752 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 16:41:28,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 72 flow [2024-11-08 16:41:28,830 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-08 16:41:28,830 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 16:41:28,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-11-08 16:41:28,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 72 flow [2024-11-08 16:41:28,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2024-11-08 16:41:28,851 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:41:28,860 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;@1cbf768f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:41:28,860 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 16:41:28,874 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:41:28,874 INFO L124 PetriNetUnfolderBase]: 4/23 cut-off events. [2024-11-08 16:41:28,875 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 16:41:28,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:41:28,879 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:41:28,880 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 16:41:28,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:41:28,894 INFO L85 PathProgramCache]: Analyzing trace with hash 723788932, now seen corresponding path program 1 times [2024-11-08 16:41:28,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:41:28,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011028493] [2024-11-08 16:41:28,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:28,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:41:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:41:29,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:29,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:41:29,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011028493] [2024-11-08 16:41:29,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011028493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:41:29,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:41:29,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:41:29,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881597703] [2024-11-08 16:41:29,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:41:29,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:41:29,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:41:29,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:41:29,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:41:29,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2024-11-08 16:41:29,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-08 16:41:29,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:41:29,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2024-11-08 16:41:29,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:41:29,582 INFO L124 PetriNetUnfolderBase]: 95/194 cut-off events. [2024-11-08 16:41:29,582 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-08 16:41:29,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 194 events. 95/194 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 654 event pairs, 33 based on Foata normal form. 17/194 useless extension candidates. Maximal degree in co-relation 338. Up to 113 conditions per place. [2024-11-08 16:41:29,588 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 22 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-11-08 16:41:29,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 32 transitions, 129 flow [2024-11-08 16:41:29,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:41:29,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:41:29,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-11-08 16:41:29,605 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-11-08 16:41:29,608 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 4 states and 68 transitions. [2024-11-08 16:41:29,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 32 transitions, 129 flow [2024-11-08 16:41:29,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 32 transitions, 119 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 16:41:29,616 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 68 flow [2024-11-08 16:41:29,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2024-11-08 16:41:29,623 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2024-11-08 16:41:29,623 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 68 flow [2024-11-08 16:41:29,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-08 16:41:29,624 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:41:29,624 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:41:29,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:41:29,625 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 16:41:29,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:41:29,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1783973100, now seen corresponding path program 1 times [2024-11-08 16:41:29,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:41:29,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358269342] [2024-11-08 16:41:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:29,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:41:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:41:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:41:29,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:41:29,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358269342] [2024-11-08 16:41:29,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358269342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:41:29,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:41:29,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:41:29,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386566436] [2024-11-08 16:41:29,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:41:29,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:41:29,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:41:29,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:41:29,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:41:29,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2024-11-08 16:41:29,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-08 16:41:29,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:41:29,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2024-11-08 16:41:29,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:41:30,072 INFO L124 PetriNetUnfolderBase]: 127/268 cut-off events. [2024-11-08 16:41:30,072 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-11-08 16:41:30,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 268 events. 127/268 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1047 event pairs, 66 based on Foata normal form. 26/288 useless extension candidates. Maximal degree in co-relation 125. Up to 169 conditions per place. [2024-11-08 16:41:30,079 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 23 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2024-11-08 16:41:30,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 33 transitions, 145 flow [2024-11-08 16:41:30,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:41:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:41:30,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-11-08 16:41:30,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-11-08 16:41:30,086 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 68 flow. Second operand 4 states and 66 transitions. [2024-11-08 16:41:30,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 33 transitions, 145 flow [2024-11-08 16:41:30,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 139 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:41:30,090 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 80 flow [2024-11-08 16:41:30,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2024-11-08 16:41:30,094 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2024-11-08 16:41:30,095 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 80 flow [2024-11-08 16:41:30,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-08 16:41:30,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:41:30,099 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:41:30,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:41:30,100 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 16:41:30,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:41:30,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1658341236, now seen corresponding path program 1 times [2024-11-08 16:41:30,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:41:30,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115764734] [2024-11-08 16:41:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:30,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:41:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:41:30,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:41:30,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:41:30,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115764734] [2024-11-08 16:41:30,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115764734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:41:30,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245945314] [2024-11-08 16:41:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:30,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:41:30,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:41:30,413 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:41:30,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:41:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:41:30,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:41:30,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:41:30,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:41:30,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:41:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:31,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245945314] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 16:41:31,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 16:41:31,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3] total 5 [2024-11-08 16:41:31,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689108553] [2024-11-08 16:41:31,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:41:31,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:41:31,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:41:31,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:41:31,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:41:31,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-08 16:41:31,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2024-11-08 16:41:31,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:41:31,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-08 16:41:31,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:41:31,278 INFO L124 PetriNetUnfolderBase]: 186/415 cut-off events. [2024-11-08 16:41:31,278 INFO L125 PetriNetUnfolderBase]: For 116/132 co-relation queries the response was YES. [2024-11-08 16:41:31,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 890 conditions, 415 events. 186/415 cut-off events. For 116/132 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1866 event pairs, 23 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 281. Up to 97 conditions per place. [2024-11-08 16:41:31,286 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 36 selfloop transitions, 5 changer transitions 2/52 dead transitions. [2024-11-08 16:41:31,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 52 transitions, 246 flow [2024-11-08 16:41:31,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:41:31,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:41:31,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-11-08 16:41:31,288 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-08 16:41:31,288 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 80 flow. Second operand 4 states and 87 transitions. [2024-11-08 16:41:31,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 52 transitions, 246 flow [2024-11-08 16:41:31,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 52 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:41:31,292 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 114 flow [2024-11-08 16:41:31,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2024-11-08 16:41:31,293 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2024-11-08 16:41:31,294 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 114 flow [2024-11-08 16:41:31,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2024-11-08 16:41:31,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:41:31,295 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:41:31,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:41:31,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:41:31,500 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 16:41:31,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:41:31,501 INFO L85 PathProgramCache]: Analyzing trace with hash 337668232, now seen corresponding path program 2 times [2024-11-08 16:41:31,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:41:31,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093309956] [2024-11-08 16:41:31,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:31,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:41:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:41:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:41:31,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:41:31,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093309956] [2024-11-08 16:41:31,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093309956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:41:31,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216240939] [2024-11-08 16:41:31,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:41:31,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:41:31,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:41:31,702 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:41:31,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:41:31,790 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:41:31,790 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:41:31,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:41:31,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:41:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:41:31,956 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:41:32,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:41:32,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216240939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:41:32,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:41:32,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 16:41:32,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808344403] [2024-11-08 16:41:32,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:41:32,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:41:32,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:41:32,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:41:32,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:41:32,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-08 16:41:32,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 114 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 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) [2024-11-08 16:41:32,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:41:32,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-08 16:41:32,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:41:32,664 INFO L124 PetriNetUnfolderBase]: 464/895 cut-off events. [2024-11-08 16:41:32,664 INFO L125 PetriNetUnfolderBase]: For 452/452 co-relation queries the response was YES. [2024-11-08 16:41:32,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2186 conditions, 895 events. 464/895 cut-off events. For 452/452 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4480 event pairs, 49 based on Foata normal form. 59/944 useless extension candidates. Maximal degree in co-relation 776. Up to 298 conditions per place. [2024-11-08 16:41:32,673 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 44 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2024-11-08 16:41:32,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 62 transitions, 355 flow [2024-11-08 16:41:32,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:41:32,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:41:32,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-11-08 16:41:32,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5459770114942529 [2024-11-08 16:41:32,675 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 114 flow. Second operand 6 states and 95 transitions. [2024-11-08 16:41:32,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 62 transitions, 355 flow [2024-11-08 16:41:32,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 62 transitions, 355 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:41:32,680 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 231 flow [2024-11-08 16:41:32,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2024-11-08 16:41:32,681 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2024-11-08 16:41:32,681 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 231 flow [2024-11-08 16:41:32,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 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) [2024-11-08 16:41:32,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:41:32,682 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:41:32,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:41:32,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:41:32,885 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 16:41:32,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:41:32,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1948215826, now seen corresponding path program 3 times [2024-11-08 16:41:32,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:41:32,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133836502] [2024-11-08 16:41:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:32,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:41:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:41:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:33,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:41:33,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133836502] [2024-11-08 16:41:33,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133836502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:41:33,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686052295] [2024-11-08 16:41:33,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:41:33,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:41:33,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:41:33,197 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:41:33,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:41:33,296 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 16:41:33,298 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:41:33,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 16:41:33,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:41:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:33,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:41:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:41:33,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686052295] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:41:33,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:41:33,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2024-11-08 16:41:33,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911287126] [2024-11-08 16:41:33,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:41:33,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 16:41:33,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:41:33,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 16:41:33,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-11-08 16:41:33,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-08 16:41:33,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 231 flow. Second operand has 19 states, 19 states have (on average 7.2631578947368425) internal successors, (138), 19 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) [2024-11-08 16:41:33,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:41:33,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-08 16:41:33,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:41:35,859 INFO L124 PetriNetUnfolderBase]: 2586/4206 cut-off events. [2024-11-08 16:41:35,859 INFO L125 PetriNetUnfolderBase]: For 5456/5456 co-relation queries the response was YES. [2024-11-08 16:41:35,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12199 conditions, 4206 events. 2586/4206 cut-off events. For 5456/5456 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 22427 event pairs, 103 based on Foata normal form. 70/4276 useless extension candidates. Maximal degree in co-relation 5021. Up to 743 conditions per place. [2024-11-08 16:41:35,889 INFO L140 encePairwiseOnDemand]: 16/29 looper letters, 198 selfloop transitions, 132 changer transitions 10/341 dead transitions. [2024-11-08 16:41:35,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 341 transitions, 2303 flow [2024-11-08 16:41:35,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-08 16:41:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-08 16:41:35,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 420 transitions. [2024-11-08 16:41:35,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.391425908667288 [2024-11-08 16:41:35,895 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 231 flow. Second operand 37 states and 420 transitions. [2024-11-08 16:41:35,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 341 transitions, 2303 flow [2024-11-08 16:41:35,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 341 transitions, 2291 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-08 16:41:35,916 INFO L231 Difference]: Finished difference. Result has 100 places, 171 transitions, 1534 flow [2024-11-08 16:41:35,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1534, PETRI_PLACES=100, PETRI_TRANSITIONS=171} [2024-11-08 16:41:35,920 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 71 predicate places. [2024-11-08 16:41:35,920 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 171 transitions, 1534 flow [2024-11-08 16:41:35,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.2631578947368425) internal successors, (138), 19 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) [2024-11-08 16:41:35,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:41:35,921 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:41:35,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:41:36,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:41:36,123 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 16:41:36,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:41:36,124 INFO L85 PathProgramCache]: Analyzing trace with hash -229302728, now seen corresponding path program 4 times [2024-11-08 16:41:36,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:41:36,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165063591] [2024-11-08 16:41:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:36,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:41:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:41:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:36,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:41:36,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165063591] [2024-11-08 16:41:36,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165063591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:41:36,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600676403] [2024-11-08 16:41:36,357 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:41:36,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:41:36,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:41:36,359 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:41:36,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:41:36,438 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:41:36,438 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:41:36,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:41:36,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:41:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:36,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:41:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:41:36,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600676403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:41:36,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:41:36,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 15 [2024-11-08 16:41:36,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082801165] [2024-11-08 16:41:36,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:41:36,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 16:41:36,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:41:36,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 16:41:36,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-08 16:41:36,840 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-08 16:41:36,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 171 transitions, 1534 flow. Second operand has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:41:36,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:41:36,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-08 16:41:36,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:41:39,056 INFO L124 PetriNetUnfolderBase]: 3654/6011 cut-off events. [2024-11-08 16:41:39,056 INFO L125 PetriNetUnfolderBase]: For 36934/36934 co-relation queries the response was YES. [2024-11-08 16:41:39,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27557 conditions, 6011 events. 3654/6011 cut-off events. For 36934/36934 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 35073 event pairs, 364 based on Foata normal form. 72/6083 useless extension candidates. Maximal degree in co-relation 24513. Up to 1717 conditions per place. [2024-11-08 16:41:39,230 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 240 selfloop transitions, 178 changer transitions 24/443 dead transitions. [2024-11-08 16:41:39,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 443 transitions, 4753 flow [2024-11-08 16:41:39,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 16:41:39,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-08 16:41:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 307 transitions. [2024-11-08 16:41:39,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42344827586206896 [2024-11-08 16:41:39,236 INFO L175 Difference]: Start difference. First operand has 100 places, 171 transitions, 1534 flow. Second operand 25 states and 307 transitions. [2024-11-08 16:41:39,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 443 transitions, 4753 flow [2024-11-08 16:41:39,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 443 transitions, 4686 flow, removed 33 selfloop flow, removed 1 redundant places. [2024-11-08 16:41:39,658 INFO L231 Difference]: Finished difference. Result has 139 places, 270 transitions, 3205 flow [2024-11-08 16:41:39,659 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3205, PETRI_PLACES=139, PETRI_TRANSITIONS=270} [2024-11-08 16:41:39,660 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 110 predicate places. [2024-11-08 16:41:39,661 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 270 transitions, 3205 flow [2024-11-08 16:41:39,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:41:39,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:41:39,662 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:41:39,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:41:39,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:41:39,868 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 16:41:39,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:41:39,868 INFO L85 PathProgramCache]: Analyzing trace with hash -232385994, now seen corresponding path program 5 times [2024-11-08 16:41:39,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:41:39,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810198070] [2024-11-08 16:41:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:39,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:41:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:41:40,087 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:40,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:41:40,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810198070] [2024-11-08 16:41:40,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810198070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:41:40,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624649777] [2024-11-08 16:41:40,088 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:41:40,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:41:40,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:41:40,091 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:41:40,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:41:40,168 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-08 16:41:40,168 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:41:40,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 16:41:40,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:41:40,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:40,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:41:40,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:41:40,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624649777] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:41:40,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:41:40,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2024-11-08 16:41:40,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493246908] [2024-11-08 16:41:40,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:41:40,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 16:41:40,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:41:40,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 16:41:40,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2024-11-08 16:41:40,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-08 16:41:40,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 270 transitions, 3205 flow. Second operand has 19 states, 19 states have (on average 6.894736842105263) internal successors, (131), 19 states have internal predecessors, (131), 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) [2024-11-08 16:41:40,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:41:40,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-08 16:41:40,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:41:43,794 INFO L124 PetriNetUnfolderBase]: 4311/7097 cut-off events. [2024-11-08 16:41:43,799 INFO L125 PetriNetUnfolderBase]: For 82102/82102 co-relation queries the response was YES. [2024-11-08 16:41:43,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39832 conditions, 7097 events. 4311/7097 cut-off events. For 82102/82102 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 42965 event pairs, 459 based on Foata normal form. 32/7129 useless extension candidates. Maximal degree in co-relation 36883. Up to 2550 conditions per place. [2024-11-08 16:41:43,930 INFO L140 encePairwiseOnDemand]: 15/29 looper letters, 271 selfloop transitions, 273 changer transitions 21/566 dead transitions. [2024-11-08 16:41:43,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 566 transitions, 7644 flow [2024-11-08 16:41:43,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 16:41:43,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-08 16:41:43,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 328 transitions. [2024-11-08 16:41:43,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4039408866995074 [2024-11-08 16:41:43,934 INFO L175 Difference]: Start difference. First operand has 139 places, 270 transitions, 3205 flow. Second operand 28 states and 328 transitions. [2024-11-08 16:41:43,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 566 transitions, 7644 flow [2024-11-08 16:41:44,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 566 transitions, 7388 flow, removed 126 selfloop flow, removed 1 redundant places. [2024-11-08 16:41:44,782 INFO L231 Difference]: Finished difference. Result has 175 places, 420 transitions, 5840 flow [2024-11-08 16:41:44,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3037, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=5840, PETRI_PLACES=175, PETRI_TRANSITIONS=420} [2024-11-08 16:41:44,783 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 146 predicate places. [2024-11-08 16:41:44,783 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 420 transitions, 5840 flow [2024-11-08 16:41:44,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.894736842105263) internal successors, (131), 19 states have internal predecessors, (131), 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) [2024-11-08 16:41:44,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:41:44,784 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:41:44,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 16:41:44,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-08 16:41:44,985 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 16:41:44,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:41:44,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1824764178, now seen corresponding path program 6 times [2024-11-08 16:41:44,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:41:44,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592992533] [2024-11-08 16:41:44,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:44,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:41:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:41:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:45,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:41:45,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592992533] [2024-11-08 16:41:45,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592992533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:41:45,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538797042] [2024-11-08 16:41:45,169 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 16:41:45,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:41:45,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:41:45,171 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:41:45,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:41:45,249 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-08 16:41:45,249 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:41:45,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 16:41:45,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:41:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:45,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:41:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:45,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538797042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:41:45,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:41:45,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-08 16:41:45,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604007109] [2024-11-08 16:41:45,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:41:45,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 16:41:45,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:41:45,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 16:41:45,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2024-11-08 16:41:45,717 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-08 16:41:45,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 420 transitions, 5840 flow. Second operand has 21 states, 21 states have (on average 6.857142857142857) internal successors, (144), 21 states have internal predecessors, (144), 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) [2024-11-08 16:41:45,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:41:45,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-08 16:41:45,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:41:49,077 INFO L124 PetriNetUnfolderBase]: 4665/7637 cut-off events. [2024-11-08 16:41:49,077 INFO L125 PetriNetUnfolderBase]: For 119438/119438 co-relation queries the response was YES. [2024-11-08 16:41:49,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51063 conditions, 7637 events. 4665/7637 cut-off events. For 119438/119438 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 46329 event pairs, 393 based on Foata normal form. 36/7673 useless extension candidates. Maximal degree in co-relation 49858. Up to 2009 conditions per place. [2024-11-08 16:41:49,271 INFO L140 encePairwiseOnDemand]: 15/29 looper letters, 284 selfloop transitions, 332 changer transitions 4/621 dead transitions. [2024-11-08 16:41:49,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 621 transitions, 9564 flow [2024-11-08 16:41:49,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 16:41:49,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-08 16:41:49,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 331 transitions. [2024-11-08 16:41:49,276 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3935790725326992 [2024-11-08 16:41:49,276 INFO L175 Difference]: Start difference. First operand has 175 places, 420 transitions, 5840 flow. Second operand 29 states and 331 transitions. [2024-11-08 16:41:49,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 621 transitions, 9564 flow [2024-11-08 16:41:50,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 621 transitions, 9120 flow, removed 207 selfloop flow, removed 6 redundant places. [2024-11-08 16:41:50,274 INFO L231 Difference]: Finished difference. Result has 205 places, 488 transitions, 7462 flow [2024-11-08 16:41:50,275 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5444, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7462, PETRI_PLACES=205, PETRI_TRANSITIONS=488} [2024-11-08 16:41:50,276 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2024-11-08 16:41:50,276 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 488 transitions, 7462 flow [2024-11-08 16:41:50,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.857142857142857) internal successors, (144), 21 states have internal predecessors, (144), 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) [2024-11-08 16:41:50,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:41:50,276 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:41:50,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 16:41:50,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 16:41:50,478 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 16:41:50,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:41:50,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1874338858, now seen corresponding path program 7 times [2024-11-08 16:41:50,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:41:50,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100656366] [2024-11-08 16:41:50,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:50,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:41:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:41:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:50,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:41:50,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100656366] [2024-11-08 16:41:50,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100656366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:41:50,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760526733] [2024-11-08 16:41:50,827 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 16:41:50,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:41:50,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:41:50,830 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:41:50,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:41:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:41:50,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 16:41:50,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:41:51,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:51,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:41:51,384 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:51,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760526733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:41:51,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:41:51,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2024-11-08 16:41:51,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490339633] [2024-11-08 16:41:51,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:41:51,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 16:41:51,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:41:51,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 16:41:51,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2024-11-08 16:41:51,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-08 16:41:51,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 488 transitions, 7462 flow. Second operand has 23 states, 23 states have (on average 6.956521739130435) internal successors, (160), 23 states have internal predecessors, (160), 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) [2024-11-08 16:41:51,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:41:51,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-08 16:41:51,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:41:55,296 INFO L124 PetriNetUnfolderBase]: 5403/8900 cut-off events. [2024-11-08 16:41:55,297 INFO L125 PetriNetUnfolderBase]: For 155926/155926 co-relation queries the response was YES. [2024-11-08 16:41:55,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63018 conditions, 8900 events. 5403/8900 cut-off events. For 155926/155926 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 55531 event pairs, 387 based on Foata normal form. 58/8958 useless extension candidates. Maximal degree in co-relation 62189. Up to 2378 conditions per place. [2024-11-08 16:41:55,407 INFO L140 encePairwiseOnDemand]: 16/29 looper letters, 355 selfloop transitions, 465 changer transitions 12/833 dead transitions. [2024-11-08 16:41:55,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 833 transitions, 13612 flow [2024-11-08 16:41:55,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-08 16:41:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-08 16:41:55,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 496 transitions. [2024-11-08 16:41:55,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3800766283524904 [2024-11-08 16:41:55,411 INFO L175 Difference]: Start difference. First operand has 205 places, 488 transitions, 7462 flow. Second operand 45 states and 496 transitions. [2024-11-08 16:41:55,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 833 transitions, 13612 flow [2024-11-08 16:41:57,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 833 transitions, 12614 flow, removed 291 selfloop flow, removed 11 redundant places. [2024-11-08 16:41:57,172 INFO L231 Difference]: Finished difference. Result has 252 places, 621 transitions, 10587 flow [2024-11-08 16:41:57,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6716, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=10587, PETRI_PLACES=252, PETRI_TRANSITIONS=621} [2024-11-08 16:41:57,173 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 223 predicate places. [2024-11-08 16:41:57,173 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 621 transitions, 10587 flow [2024-11-08 16:41:57,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.956521739130435) internal successors, (160), 23 states have internal predecessors, (160), 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) [2024-11-08 16:41:57,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:41:57,173 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:41:57,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 16:41:57,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-08 16:41:57,374 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 16:41:57,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:41:57,375 INFO L85 PathProgramCache]: Analyzing trace with hash -299939414, now seen corresponding path program 8 times [2024-11-08 16:41:57,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:41:57,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850131573] [2024-11-08 16:41:57,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:41:57,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:41:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:41:57,581 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:57,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:41:57,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850131573] [2024-11-08 16:41:57,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850131573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:41:57,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861408072] [2024-11-08 16:41:57,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:41:57,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:41:57,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:41:57,585 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:41:57,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:41:57,657 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:41:57,658 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:41:57,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 16:41:57,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:41:57,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:57,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:41:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:41:58,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861408072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:41:58,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:41:58,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2024-11-08 16:41:58,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356249949] [2024-11-08 16:41:58,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:41:58,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 16:41:58,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:41:58,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 16:41:58,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-08 16:41:58,166 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-08 16:41:58,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 621 transitions, 10587 flow. Second operand has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 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) [2024-11-08 16:41:58,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:41:58,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-08 16:41:58,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:42:04,385 INFO L124 PetriNetUnfolderBase]: 8690/14290 cut-off events. [2024-11-08 16:42:04,385 INFO L125 PetriNetUnfolderBase]: For 284334/284334 co-relation queries the response was YES. [2024-11-08 16:42:04,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107207 conditions, 14290 events. 8690/14290 cut-off events. For 284334/284334 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 94253 event pairs, 339 based on Foata normal form. 73/14363 useless extension candidates. Maximal degree in co-relation 106407. Up to 2893 conditions per place. [2024-11-08 16:42:04,638 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 606 selfloop transitions, 880 changer transitions 247/1734 dead transitions. [2024-11-08 16:42:04,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1734 transitions, 32195 flow [2024-11-08 16:42:04,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-08 16:42:04,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-08 16:42:04,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 437 transitions. [2024-11-08 16:42:04,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39655172413793105 [2024-11-08 16:42:04,642 INFO L175 Difference]: Start difference. First operand has 252 places, 621 transitions, 10587 flow. Second operand 38 states and 437 transitions. [2024-11-08 16:42:04,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 1734 transitions, 32195 flow [2024-11-08 16:42:09,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 1734 transitions, 31474 flow, removed 286 selfloop flow, removed 16 redundant places. [2024-11-08 16:42:09,060 INFO L231 Difference]: Finished difference. Result has 293 places, 1102 transitions, 22864 flow [2024-11-08 16:42:09,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=10251, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=391, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=22864, PETRI_PLACES=293, PETRI_TRANSITIONS=1102} [2024-11-08 16:42:09,062 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 264 predicate places. [2024-11-08 16:42:09,062 INFO L471 AbstractCegarLoop]: Abstraction has has 293 places, 1102 transitions, 22864 flow [2024-11-08 16:42:09,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 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) [2024-11-08 16:42:09,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:42:09,063 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:42:09,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 16:42:09,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:42:09,266 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 16:42:09,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:42:09,266 INFO L85 PathProgramCache]: Analyzing trace with hash 869424590, now seen corresponding path program 9 times [2024-11-08 16:42:09,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:42:09,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942080247] [2024-11-08 16:42:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:42:09,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:42:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:42:09,467 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:42:09,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:42:09,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942080247] [2024-11-08 16:42:09,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942080247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:42:09,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129921599] [2024-11-08 16:42:09,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:42:09,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:42:09,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:42:09,471 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:42:09,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 16:42:09,544 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 16:42:09,544 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:42:09,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 16:42:09,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:42:09,703 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:42:09,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:42:09,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:42:09,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129921599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:42:09,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:42:09,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 18 [2024-11-08 16:42:09,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166290210] [2024-11-08 16:42:09,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:42:09,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 16:42:09,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:42:09,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 16:42:09,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-08 16:42:09,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-08 16:42:09,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 1102 transitions, 22864 flow. Second operand has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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) [2024-11-08 16:42:09,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:42:09,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-08 16:42:09,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:42:20,806 INFO L124 PetriNetUnfolderBase]: 10802/17857 cut-off events. [2024-11-08 16:42:20,806 INFO L125 PetriNetUnfolderBase]: For 469832/469832 co-relation queries the response was YES. [2024-11-08 16:42:21,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147347 conditions, 17857 events. 10802/17857 cut-off events. For 469832/469832 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 124160 event pairs, 445 based on Foata normal form. 95/17952 useless extension candidates. Maximal degree in co-relation 146681. Up to 3683 conditions per place. [2024-11-08 16:42:21,169 INFO L140 encePairwiseOnDemand]: 16/29 looper letters, 523 selfloop transitions, 1418 changer transitions 25/1967 dead transitions. [2024-11-08 16:42:21,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 1967 transitions, 43353 flow [2024-11-08 16:42:21,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 16:42:21,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-08 16:42:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 388 transitions. [2024-11-08 16:42:21,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3935091277890467 [2024-11-08 16:42:21,173 INFO L175 Difference]: Start difference. First operand has 293 places, 1102 transitions, 22864 flow. Second operand 34 states and 388 transitions. [2024-11-08 16:42:21,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 1967 transitions, 43353 flow [2024-11-08 16:42:29,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 1967 transitions, 42319 flow, removed 489 selfloop flow, removed 6 redundant places. [2024-11-08 16:42:29,958 INFO L231 Difference]: Finished difference. Result has 327 places, 1681 transitions, 39305 flow [2024-11-08 16:42:29,959 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=22185, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=839, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=39305, PETRI_PLACES=327, PETRI_TRANSITIONS=1681} [2024-11-08 16:42:29,960 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 298 predicate places. [2024-11-08 16:42:29,960 INFO L471 AbstractCegarLoop]: Abstraction has has 327 places, 1681 transitions, 39305 flow [2024-11-08 16:42:29,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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) [2024-11-08 16:42:29,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:42:29,960 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:42:29,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 16:42:30,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:42:30,161 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 16:42:30,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:42:30,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1372294234, now seen corresponding path program 10 times [2024-11-08 16:42:30,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:42:30,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569514255] [2024-11-08 16:42:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:42:30,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:42:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:42:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:42:30,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:42:30,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569514255] [2024-11-08 16:42:30,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569514255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:42:30,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86787995] [2024-11-08 16:42:30,324 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:42:30,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:42:30,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:42:30,327 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:42:30,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 16:42:30,392 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:42:30,393 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:42:30,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:42:30,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:42:30,543 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:42:30,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:42:30,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:42:30,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86787995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:42:30,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:42:30,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-11-08 16:42:30,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658559879] [2024-11-08 16:42:30,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:42:30,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 16:42:30,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:42:30,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 16:42:30,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-08 16:42:30,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-08 16:42:30,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 1681 transitions, 39305 flow. Second operand has 15 states, 15 states have (on average 7.4) internal successors, (111), 15 states have internal predecessors, (111), 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) [2024-11-08 16:42:30,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:42:30,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-08 16:42:30,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:42:45,684 INFO L124 PetriNetUnfolderBase]: 11976/19833 cut-off events. [2024-11-08 16:42:45,685 INFO L125 PetriNetUnfolderBase]: For 585342/585342 co-relation queries the response was YES. [2024-11-08 16:42:45,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176011 conditions, 19833 events. 11976/19833 cut-off events. For 585342/585342 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 140868 event pairs, 590 based on Foata normal form. 64/19897 useless extension candidates. Maximal degree in co-relation 175042. Up to 4088 conditions per place. [2024-11-08 16:42:46,046 INFO L140 encePairwiseOnDemand]: 16/29 looper letters, 550 selfloop transitions, 1556 changer transitions 16/2123 dead transitions. [2024-11-08 16:42:46,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 2123 transitions, 51854 flow [2024-11-08 16:42:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-08 16:42:46,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-08 16:42:46,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 446 transitions. [2024-11-08 16:42:46,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41565703634669154 [2024-11-08 16:42:46,049 INFO L175 Difference]: Start difference. First operand has 327 places, 1681 transitions, 39305 flow. Second operand 37 states and 446 transitions. [2024-11-08 16:42:46,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 2123 transitions, 51854 flow [2024-11-08 16:42:58,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 2123 transitions, 51452 flow, removed 169 selfloop flow, removed 9 redundant places. [2024-11-08 16:42:58,594 INFO L231 Difference]: Finished difference. Result has 366 places, 1891 transitions, 49819 flow [2024-11-08 16:42:58,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=38946, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=49819, PETRI_PLACES=366, PETRI_TRANSITIONS=1891} [2024-11-08 16:42:58,596 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 337 predicate places. [2024-11-08 16:42:58,597 INFO L471 AbstractCegarLoop]: Abstraction has has 366 places, 1891 transitions, 49819 flow [2024-11-08 16:42:58,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.4) internal successors, (111), 15 states have internal predecessors, (111), 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) [2024-11-08 16:42:58,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:42:58,597 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:42:58,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 16:42:58,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 16:42:58,798 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 16:42:58,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:42:58,799 INFO L85 PathProgramCache]: Analyzing trace with hash -951367650, now seen corresponding path program 11 times [2024-11-08 16:42:58,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:42:58,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555070294] [2024-11-08 16:42:58,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:42:58,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:42:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:42:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:42:58,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:42:58,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555070294] [2024-11-08 16:42:58,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555070294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:42:58,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526702115] [2024-11-08 16:42:58,954 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:42:58,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:42:58,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:42:58,957 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:42:58,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 16:42:59,030 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-08 16:42:59,030 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:42:59,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 16:42:59,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:42:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:42:59,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:42:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:42:59,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526702115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:42:59,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:42:59,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-08 16:42:59,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017078015] [2024-11-08 16:42:59,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:42:59,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 16:42:59,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:42:59,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 16:42:59,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-11-08 16:42:59,430 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-08 16:42:59,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 1891 transitions, 49819 flow. Second operand has 19 states, 19 states have (on average 6.947368421052632) internal successors, (132), 19 states have internal predecessors, (132), 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) [2024-11-08 16:42:59,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:42:59,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-08 16:42:59,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:43:19,326 INFO L124 PetriNetUnfolderBase]: 13722/22550 cut-off events. [2024-11-08 16:43:19,326 INFO L125 PetriNetUnfolderBase]: For 815783/815783 co-relation queries the response was YES. [2024-11-08 16:43:19,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216195 conditions, 22550 events. 13722/22550 cut-off events. For 815783/815783 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 159479 event pairs, 529 based on Foata normal form. 36/22586 useless extension candidates. Maximal degree in co-relation 215267. Up to 4770 conditions per place. [2024-11-08 16:43:19,721 INFO L140 encePairwiseOnDemand]: 15/29 looper letters, 823 selfloop transitions, 1742 changer transitions 41/2607 dead transitions. [2024-11-08 16:43:19,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 2607 transitions, 71291 flow [2024-11-08 16:43:19,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 16:43:19,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-08 16:43:19,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 399 transitions. [2024-11-08 16:43:19,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40466531440162273 [2024-11-08 16:43:19,724 INFO L175 Difference]: Start difference. First operand has 366 places, 1891 transitions, 49819 flow. Second operand 34 states and 399 transitions. [2024-11-08 16:43:19,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 2607 transitions, 71291 flow [2024-11-08 16:43:45,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 2607 transitions, 70737 flow, removed 172 selfloop flow, removed 12 redundant places. [2024-11-08 16:43:46,028 INFO L231 Difference]: Finished difference. Result has 396 places, 2243 transitions, 63136 flow [2024-11-08 16:43:46,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49333, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1887, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1412, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=63136, PETRI_PLACES=396, PETRI_TRANSITIONS=2243} [2024-11-08 16:43:46,031 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 367 predicate places. [2024-11-08 16:43:46,031 INFO L471 AbstractCegarLoop]: Abstraction has has 396 places, 2243 transitions, 63136 flow [2024-11-08 16:43:46,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.947368421052632) internal successors, (132), 19 states have internal predecessors, (132), 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) [2024-11-08 16:43:46,032 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:43:46,032 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:43:46,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 16:43:46,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:43:46,233 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 16:43:46,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:43:46,233 INFO L85 PathProgramCache]: Analyzing trace with hash 2100134630, now seen corresponding path program 12 times [2024-11-08 16:43:46,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:43:46,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462646119] [2024-11-08 16:43:46,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:43:46,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:43:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:43:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:43:46,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:43:46,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462646119] [2024-11-08 16:43:46,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462646119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:43:46,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611311901] [2024-11-08 16:43:46,410 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 16:43:46,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:43:46,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:43:46,413 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:43:46,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 16:43:46,483 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-08 16:43:46,484 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:43:46,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 16:43:46,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:43:46,666 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:43:46,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:43:46,828 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:43:46,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611311901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:43:46,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:43:46,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2024-11-08 16:43:46,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557371783] [2024-11-08 16:43:46,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:43:46,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 16:43:46,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:43:46,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 16:43:46,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2024-11-08 16:43:46,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-08 16:43:46,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 2243 transitions, 63136 flow. Second operand has 19 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 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) [2024-11-08 16:43:46,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:43:46,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-08 16:43:46,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:44:10,684 INFO L124 PetriNetUnfolderBase]: 14552/23899 cut-off events. [2024-11-08 16:44:10,684 INFO L125 PetriNetUnfolderBase]: For 947915/947915 co-relation queries the response was YES. [2024-11-08 16:44:11,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243882 conditions, 23899 events. 14552/23899 cut-off events. For 947915/947915 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 171585 event pairs, 1784 based on Foata normal form. 40/23939 useless extension candidates. Maximal degree in co-relation 242914. Up to 14184 conditions per place. [2024-11-08 16:44:11,475 INFO L140 encePairwiseOnDemand]: 15/29 looper letters, 961 selfloop transitions, 1693 changer transitions 6/2661 dead transitions. [2024-11-08 16:44:11,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 2661 transitions, 78931 flow [2024-11-08 16:44:11,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 16:44:11,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-08 16:44:11,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 259 transitions. [2024-11-08 16:44:11,477 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4059561128526646 [2024-11-08 16:44:11,477 INFO L175 Difference]: Start difference. First operand has 396 places, 2243 transitions, 63136 flow. Second operand 22 states and 259 transitions. [2024-11-08 16:44:11,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 2661 transitions, 78931 flow [2024-11-08 16:44:42,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 2661 transitions, 77374 flow, removed 252 selfloop flow, removed 11 redundant places. [2024-11-08 16:44:42,791 INFO L231 Difference]: Finished difference. Result has 415 places, 2552 transitions, 75964 flow [2024-11-08 16:44:42,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=61815, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1393, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=753, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=75964, PETRI_PLACES=415, PETRI_TRANSITIONS=2552} [2024-11-08 16:44:42,794 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 386 predicate places. [2024-11-08 16:44:42,794 INFO L471 AbstractCegarLoop]: Abstraction has has 415 places, 2552 transitions, 75964 flow [2024-11-08 16:44:42,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 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) [2024-11-08 16:44:42,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:44:42,795 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:44:42,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 16:44:42,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:44:43,000 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 16:44:43,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:44:43,000 INFO L85 PathProgramCache]: Analyzing trace with hash 306843768, now seen corresponding path program 13 times [2024-11-08 16:44:43,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:44:43,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680956702] [2024-11-08 16:44:43,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:44:43,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:44:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:44:43,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:44:43,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:44:43,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680956702] [2024-11-08 16:44:43,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680956702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:44:43,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566615945] [2024-11-08 16:44:43,167 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 16:44:43,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:44:43,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:44:43,169 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:44:43,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8a9a919-be24-4de9-96ec-00eae2d7a1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 16:44:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:44:43,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 16:44:43,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:44:43,408 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:44:43,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:44:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:44:43,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566615945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:44:43,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:44:43,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2024-11-08 16:44:43,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33828229] [2024-11-08 16:44:43,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:44:43,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 16:44:43,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:44:43,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 16:44:43,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-08 16:44:43,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-08 16:44:43,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 2552 transitions, 75964 flow. Second operand has 19 states, 19 states have (on average 6.894736842105263) internal successors, (131), 19 states have internal predecessors, (131), 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) [2024-11-08 16:44:43,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:44:43,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-08 16:44:43,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand