./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/stack_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/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_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stack_longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/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_46508d05-966d-4618-91ce-9d047029ae19/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 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:39:43,925 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:39:44,034 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 18:39:44,043 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:39:44,044 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:39:44,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:39:44,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:39:44,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:39:44,099 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:39:44,101 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:39:44,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:39:44,102 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:39:44,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:39:44,103 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:39:44,104 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:39:44,107 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:39:44,108 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:39:44,108 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:39:44,108 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:39:44,109 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:39:44,109 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 18:39:44,113 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 18:39:44,113 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 18:39:44,114 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:39:44,114 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 18:39:44,114 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:39:44,115 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:39:44,115 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:39:44,115 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:39:44,116 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:39:44,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:39:44,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:39:44,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:39:44,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:39:44,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:39:44,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:39:44,120 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:39:44,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:39:44,120 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:39:44,121 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:39:44,122 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:39:44,123 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:39:44,123 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_46508d05-966d-4618-91ce-9d047029ae19/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2024-11-08 18:39:44,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:39:44,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:39:44,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:39:44,524 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:39:44,525 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:39:44,527 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/pthread/stack_longer-2.i Unable to find full path for "g++" [2024-11-08 18:39:46,671 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:39:46,926 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:39:46,931 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/sv-benchmarks/c/pthread/stack_longer-2.i [2024-11-08 18:39:46,950 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/data/a4a85c4bd/32414fdc574b42ffbec365b199c3a150/FLAG1de5bb6ae [2024-11-08 18:39:46,971 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/data/a4a85c4bd/32414fdc574b42ffbec365b199c3a150 [2024-11-08 18:39:46,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:39:46,978 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:39:46,980 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:39:46,980 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:39:46,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:39:46,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:39:46" (1/1) ... [2024-11-08 18:39:46,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@504e762d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:39:46, skipping insertion in model container [2024-11-08 18:39:46,991 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:39:46" (1/1) ... [2024-11-08 18:39:47,057 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:39:47,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:39:47,772 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:39:47,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:39:47,998 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:39:47,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:39:47 WrapperNode [2024-11-08 18:39:47,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:39:48,001 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:39:48,002 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:39:48,004 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:39:48,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:39:47" (1/1) ... [2024-11-08 18:39:48,053 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:39:47" (1/1) ... [2024-11-08 18:39:48,128 INFO L138 Inliner]: procedures = 277, calls = 431, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 547 [2024-11-08 18:39:48,128 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:39:48,129 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:39:48,129 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:39:48,130 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:39:48,146 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:39:47" (1/1) ... [2024-11-08 18:39:48,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:39:47" (1/1) ... [2024-11-08 18:39:48,165 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:39:47" (1/1) ... [2024-11-08 18:39:48,198 INFO L175 MemorySlicer]: Split 409 memory accesses to 3 slices as follows [2, 402, 5]. 98 percent of accesses are in the largest equivalence class. The 407 initializations are split as follows [2, 400, 5]. The 1 writes are split as follows [0, 1, 0]. [2024-11-08 18:39:48,199 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:39:47" (1/1) ... [2024-11-08 18:39:48,199 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:39:47" (1/1) ... [2024-11-08 18:39:48,251 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:39:47" (1/1) ... [2024-11-08 18:39:48,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:39:47" (1/1) ... [2024-11-08 18:39:48,263 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:39:47" (1/1) ... [2024-11-08 18:39:48,270 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:39:47" (1/1) ... [2024-11-08 18:39:48,284 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:39:48,285 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:39:48,286 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:39:48,286 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:39:48,291 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:39:47" (1/1) ... [2024-11-08 18:39:48,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:39:48,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:39:48,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:39:48,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:39:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-08 18:39:48,414 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-08 18:39:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-08 18:39:48,414 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-08 18:39:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 18:39:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:39:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 18:39:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 18:39:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:39:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 18:39:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 18:39:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 18:39:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:39:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:39:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 18:39:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 18:39:48,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:39:48,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:39:48,426 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 18:39:48,644 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:39:48,648 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:39:49,979 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:39:49,979 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:39:57,327 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:39:57,328 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:39:57,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:39:57 BoogieIcfgContainer [2024-11-08 18:39:57,329 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:39:57,332 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:39:57,332 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:39:57,337 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:39:57,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:39:46" (1/3) ... [2024-11-08 18:39:57,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3118b7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:39:57, skipping insertion in model container [2024-11-08 18:39:57,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:39:47" (2/3) ... [2024-11-08 18:39:57,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3118b7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:39:57, skipping insertion in model container [2024-11-08 18:39:57,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:39:57" (3/3) ... [2024-11-08 18:39:57,342 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2024-11-08 18:39:57,365 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:39:57,366 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-08 18:39:57,366 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:39:57,462 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 18:39:57,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 60 transitions, 134 flow [2024-11-08 18:39:57,589 INFO L124 PetriNetUnfolderBase]: 11/58 cut-off events. [2024-11-08 18:39:57,590 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 18:39:57,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 58 events. 11/58 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 137 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2024-11-08 18:39:57,594 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 60 transitions, 134 flow [2024-11-08 18:39:57,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 57 transitions, 126 flow [2024-11-08 18:39:57,610 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:39:57,620 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;@6b5b8e9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:39:57,621 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-08 18:39:57,658 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:39:57,658 INFO L124 PetriNetUnfolderBase]: 3/25 cut-off events. [2024-11-08 18:39:57,659 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 18:39:57,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:39:57,660 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:39:57,660 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-08 18:39:57,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:39:57,667 INFO L85 PathProgramCache]: Analyzing trace with hash 2144679023, now seen corresponding path program 1 times [2024-11-08 18:39:57,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:39:57,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572414421] [2024-11-08 18:39:57,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:39:57,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:39:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:39:58,581 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 18:39:58,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:39:58,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572414421] [2024-11-08 18:39:58,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572414421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:39:58,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:39:58,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:39:58,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767452165] [2024-11-08 18:39:58,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:39:58,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:39:58,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:39:58,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:39:58,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:39:58,679 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-08 18:39:58,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 57 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:39:58,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:39:58,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-08 18:39:58,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:39:59,194 INFO L124 PetriNetUnfolderBase]: 465/881 cut-off events. [2024-11-08 18:39:59,195 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-08 18:39:59,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1653 conditions, 881 events. 465/881 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4538 event pairs, 245 based on Foata normal form. 90/824 useless extension candidates. Maximal degree in co-relation 1575. Up to 520 conditions per place. [2024-11-08 18:39:59,209 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 43 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2024-11-08 18:39:59,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 65 transitions, 237 flow [2024-11-08 18:39:59,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:39:59,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:39:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-11-08 18:39:59,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5708333333333333 [2024-11-08 18:39:59,229 INFO L175 Difference]: Start difference. First operand has 53 places, 57 transitions, 126 flow. Second operand 4 states and 137 transitions. [2024-11-08 18:39:59,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 65 transitions, 237 flow [2024-11-08 18:39:59,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 227 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 18:39:59,245 INFO L231 Difference]: Finished difference. Result has 49 places, 50 transitions, 110 flow [2024-11-08 18:39:59,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=49, PETRI_TRANSITIONS=50} [2024-11-08 18:39:59,253 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -4 predicate places. [2024-11-08 18:39:59,253 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 50 transitions, 110 flow [2024-11-08 18:39:59,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:39:59,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:39:59,254 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:39:59,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:39:59,255 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-08 18:39:59,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:39:59,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2144679024, now seen corresponding path program 1 times [2024-11-08 18:39:59,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:39:59,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823708932] [2024-11-08 18:39:59,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:39:59,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:39:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:00,209 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 18:40:00,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:40:00,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823708932] [2024-11-08 18:40:00,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823708932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:40:00,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:40:00,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:40:00,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053985037] [2024-11-08 18:40:00,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:40:00,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:40:00,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:40:00,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:40:00,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:40:00,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-08 18:40:00,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 50 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 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 18:40:00,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:40:00,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-08 18:40:00,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:40:00,754 INFO L124 PetriNetUnfolderBase]: 592/1119 cut-off events. [2024-11-08 18:40:00,755 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-08 18:40:00,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2130 conditions, 1119 events. 592/1119 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5582 event pairs, 179 based on Foata normal form. 9/936 useless extension candidates. Maximal degree in co-relation 713. Up to 755 conditions per place. [2024-11-08 18:40:00,770 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 59 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2024-11-08 18:40:00,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 305 flow [2024-11-08 18:40:00,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:40:00,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:40:00,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-11-08 18:40:00,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5766666666666667 [2024-11-08 18:40:00,776 INFO L175 Difference]: Start difference. First operand has 49 places, 50 transitions, 110 flow. Second operand 5 states and 173 transitions. [2024-11-08 18:40:00,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 305 flow [2024-11-08 18:40:00,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 81 transitions, 297 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 18:40:00,782 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 140 flow [2024-11-08 18:40:00,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2024-11-08 18:40:00,785 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-11-08 18:40:00,785 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 140 flow [2024-11-08 18:40:00,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 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 18:40:00,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:40:00,787 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:40:00,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:40:00,788 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-08 18:40:00,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:40:00,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1922298613, now seen corresponding path program 1 times [2024-11-08 18:40:00,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:40:00,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212374190] [2024-11-08 18:40:00,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:00,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:40:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:01,039 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 18:40:01,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:40:01,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212374190] [2024-11-08 18:40:01,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212374190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:40:01,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:40:01,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:40:01,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626401705] [2024-11-08 18:40:01,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:40:01,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:40:01,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:40:01,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:40:01,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:40:01,046 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-08 18:40:01,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 18:40:01,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:40:01,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-08 18:40:01,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:40:01,510 INFO L124 PetriNetUnfolderBase]: 865/1638 cut-off events. [2024-11-08 18:40:01,510 INFO L125 PetriNetUnfolderBase]: For 254/257 co-relation queries the response was YES. [2024-11-08 18:40:01,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3333 conditions, 1638 events. 865/1638 cut-off events. For 254/257 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8825 event pairs, 363 based on Foata normal form. 1/1400 useless extension candidates. Maximal degree in co-relation 1177. Up to 857 conditions per place. [2024-11-08 18:40:01,524 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 68 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2024-11-08 18:40:01,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 92 transitions, 382 flow [2024-11-08 18:40:01,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:40:01,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:40:01,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-11-08 18:40:01,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-11-08 18:40:01,527 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 140 flow. Second operand 4 states and 159 transitions. [2024-11-08 18:40:01,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 92 transitions, 382 flow [2024-11-08 18:40:01,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 92 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:40:01,532 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 171 flow [2024-11-08 18:40:01,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=171, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-11-08 18:40:01,533 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2024-11-08 18:40:01,533 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 171 flow [2024-11-08 18:40:01,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 18:40:01,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:40:01,534 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:40:01,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:40:01,534 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-08 18:40:01,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:40:01,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1831505174, now seen corresponding path program 1 times [2024-11-08 18:40:01,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:40:01,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337117584] [2024-11-08 18:40:01,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:01,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:40:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:01,670 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 18:40:01,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:40:01,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337117584] [2024-11-08 18:40:01,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337117584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:40:01,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:40:01,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:40:01,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497722856] [2024-11-08 18:40:01,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:40:01,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:40:01,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:40:01,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:40:01,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:40:01,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2024-11-08 18:40:01,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:40:01,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:40:01,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2024-11-08 18:40:01,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:40:02,222 INFO L124 PetriNetUnfolderBase]: 1080/1921 cut-off events. [2024-11-08 18:40:02,223 INFO L125 PetriNetUnfolderBase]: For 529/530 co-relation queries the response was YES. [2024-11-08 18:40:02,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4393 conditions, 1921 events. 1080/1921 cut-off events. For 529/530 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10173 event pairs, 443 based on Foata normal form. 24/1756 useless extension candidates. Maximal degree in co-relation 1171. Up to 1357 conditions per place. [2024-11-08 18:40:02,239 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 57 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2024-11-08 18:40:02,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 76 transitions, 344 flow [2024-11-08 18:40:02,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:40:02,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:40:02,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2024-11-08 18:40:02,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2024-11-08 18:40:02,242 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 171 flow. Second operand 3 states and 118 transitions. [2024-11-08 18:40:02,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 76 transitions, 344 flow [2024-11-08 18:40:02,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 76 transitions, 341 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:40:02,250 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 182 flow [2024-11-08 18:40:02,250 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2024-11-08 18:40:02,251 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-11-08 18:40:02,251 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 182 flow [2024-11-08 18:40:02,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:40:02,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:40:02,252 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 18:40:02,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:40:02,253 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-08 18:40:02,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:40:02,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1999349412, now seen corresponding path program 1 times [2024-11-08 18:40:02,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:40:02,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559802832] [2024-11-08 18:40:02,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:02,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:40:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:02,541 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 18:40:02,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:40:02,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559802832] [2024-11-08 18:40:02,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559802832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:40:02,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:40:02,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:40:02,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400950978] [2024-11-08 18:40:02,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:40:02,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:40:02,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:40:02,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:40:02,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:40:02,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-08 18:40:02,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:40:02,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:40:02,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-08 18:40:02,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:40:02,810 INFO L124 PetriNetUnfolderBase]: 522/1104 cut-off events. [2024-11-08 18:40:02,810 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2024-11-08 18:40:02,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2459 conditions, 1104 events. 522/1104 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5483 event pairs, 105 based on Foata normal form. 60/1079 useless extension candidates. Maximal degree in co-relation 989. Up to 634 conditions per place. [2024-11-08 18:40:02,820 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 45 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-11-08 18:40:02,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 312 flow [2024-11-08 18:40:02,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:40:02,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:40:02,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-11-08 18:40:02,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2024-11-08 18:40:02,822 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 182 flow. Second operand 3 states and 109 transitions. [2024-11-08 18:40:02,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 312 flow [2024-11-08 18:40:02,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 68 transitions, 304 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-08 18:40:02,830 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 184 flow [2024-11-08 18:40:02,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-11-08 18:40:02,832 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2024-11-08 18:40:02,834 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 184 flow [2024-11-08 18:40:02,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:40:02,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:40:02,835 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:40:02,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:40:02,836 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-08 18:40:02,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:40:02,839 INFO L85 PathProgramCache]: Analyzing trace with hash 50015518, now seen corresponding path program 1 times [2024-11-08 18:40:02,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:40:02,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444181047] [2024-11-08 18:40:02,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:02,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:40:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:40:03,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:40:03,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444181047] [2024-11-08 18:40:03,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444181047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:40:03,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51108859] [2024-11-08 18:40:03,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:03,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:40:03,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:40:03,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:40:03,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:40:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:03,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 18:40:03,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:40:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:40:04,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:40:04,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:40:04,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51108859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:40:04,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:40:04,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-08 18:40:04,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884533127] [2024-11-08 18:40:04,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:40:04,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 18:40:04,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:40:04,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 18:40:04,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-08 18:40:04,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2024-11-08 18:40:04,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 184 flow. Second operand has 14 states, 14 states have (on average 23.214285714285715) internal successors, (325), 14 states have internal predecessors, (325), 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 18:40:04,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:40:04,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2024-11-08 18:40:04,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:40:06,688 INFO L124 PetriNetUnfolderBase]: 1834/3793 cut-off events. [2024-11-08 18:40:06,689 INFO L125 PetriNetUnfolderBase]: For 646/646 co-relation queries the response was YES. [2024-11-08 18:40:06,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8428 conditions, 3793 events. 1834/3793 cut-off events. For 646/646 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 23121 event pairs, 262 based on Foata normal form. 54/3551 useless extension candidates. Maximal degree in co-relation 2610. Up to 699 conditions per place. [2024-11-08 18:40:06,721 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 194 selfloop transitions, 26 changer transitions 0/237 dead transitions. [2024-11-08 18:40:06,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 237 transitions, 1174 flow [2024-11-08 18:40:06,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 18:40:06,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 18:40:06,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 515 transitions. [2024-11-08 18:40:06,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5722222222222222 [2024-11-08 18:40:06,725 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 184 flow. Second operand 15 states and 515 transitions. [2024-11-08 18:40:06,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 237 transitions, 1174 flow [2024-11-08 18:40:06,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 237 transitions, 1152 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:40:06,739 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 431 flow [2024-11-08 18:40:06,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=431, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2024-11-08 18:40:06,740 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 32 predicate places. [2024-11-08 18:40:06,741 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 431 flow [2024-11-08 18:40:06,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.214285714285715) internal successors, (325), 14 states have internal predecessors, (325), 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 18:40:06,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:40:06,743 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 18:40:06,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:40:06,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:40:06,948 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-08 18:40:06,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:40:06,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1362064812, now seen corresponding path program 1 times [2024-11-08 18:40:06,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:40:06,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865603099] [2024-11-08 18:40:06,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:06,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:40:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:07,329 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 18:40:07,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:40:07,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865603099] [2024-11-08 18:40:07,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865603099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:40:07,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:40:07,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:40:07,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322703674] [2024-11-08 18:40:07,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:40:07,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:40:07,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:40:07,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:40:07,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:40:07,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-08 18:40:07,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 431 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:40:07,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:40:07,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-08 18:40:07,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:40:08,159 INFO L124 PetriNetUnfolderBase]: 1821/3809 cut-off events. [2024-11-08 18:40:08,160 INFO L125 PetriNetUnfolderBase]: For 1772/1772 co-relation queries the response was YES. [2024-11-08 18:40:08,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9167 conditions, 3809 events. 1821/3809 cut-off events. For 1772/1772 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 23866 event pairs, 958 based on Foata normal form. 0/3626 useless extension candidates. Maximal degree in co-relation 7613. Up to 2028 conditions per place. [2024-11-08 18:40:08,212 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 55 selfloop transitions, 18 changer transitions 0/91 dead transitions. [2024-11-08 18:40:08,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 91 transitions, 603 flow [2024-11-08 18:40:08,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:40:08,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:40:08,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-11-08 18:40:08,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-11-08 18:40:08,216 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 431 flow. Second operand 5 states and 147 transitions. [2024-11-08 18:40:08,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 91 transitions, 603 flow [2024-11-08 18:40:08,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 91 transitions, 593 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-08 18:40:08,236 INFO L231 Difference]: Finished difference. Result has 88 places, 80 transitions, 455 flow [2024-11-08 18:40:08,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=455, PETRI_PLACES=88, PETRI_TRANSITIONS=80} [2024-11-08 18:40:08,238 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 35 predicate places. [2024-11-08 18:40:08,239 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 80 transitions, 455 flow [2024-11-08 18:40:08,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:40:08,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:40:08,240 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 18:40:08,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:40:08,240 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-08 18:40:08,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:40:08,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2042577747, now seen corresponding path program 1 times [2024-11-08 18:40:08,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:40:08,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24368047] [2024-11-08 18:40:08,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:08,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:40:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:08,938 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 18:40:08,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:40:08,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24368047] [2024-11-08 18:40:08,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24368047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:40:08,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:40:08,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:40:08,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596933146] [2024-11-08 18:40:08,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:40:08,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:40:08,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:40:08,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:40:08,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:40:08,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-08 18:40:08,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 80 transitions, 455 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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 18:40:08,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:40:08,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-08 18:40:08,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:40:09,910 INFO L124 PetriNetUnfolderBase]: 1878/3863 cut-off events. [2024-11-08 18:40:09,910 INFO L125 PetriNetUnfolderBase]: For 2563/2563 co-relation queries the response was YES. [2024-11-08 18:40:09,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9687 conditions, 3863 events. 1878/3863 cut-off events. For 2563/2563 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 23791 event pairs, 456 based on Foata normal form. 0/3661 useless extension candidates. Maximal degree in co-relation 8094. Up to 2729 conditions per place. [2024-11-08 18:40:09,962 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 95 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2024-11-08 18:40:09,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 118 transitions, 793 flow [2024-11-08 18:40:09,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:40:09,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:40:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2024-11-08 18:40:09,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-08 18:40:09,964 INFO L175 Difference]: Start difference. First operand has 88 places, 80 transitions, 455 flow. Second operand 6 states and 200 transitions. [2024-11-08 18:40:09,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 118 transitions, 793 flow [2024-11-08 18:40:09,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 751 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 18:40:09,984 INFO L231 Difference]: Finished difference. Result has 92 places, 84 transitions, 470 flow [2024-11-08 18:40:09,984 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=470, PETRI_PLACES=92, PETRI_TRANSITIONS=84} [2024-11-08 18:40:09,985 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2024-11-08 18:40:09,986 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 84 transitions, 470 flow [2024-11-08 18:40:09,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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 18:40:09,986 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:40:09,987 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:40:09,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:40:09,987 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-08 18:40:09,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:40:09,988 INFO L85 PathProgramCache]: Analyzing trace with hash -368924322, now seen corresponding path program 1 times [2024-11-08 18:40:09,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:40:09,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455304407] [2024-11-08 18:40:09,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:09,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:40:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:40:10,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:40:10,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455304407] [2024-11-08 18:40:10,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455304407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:40:10,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:40:10,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:40:10,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277678517] [2024-11-08 18:40:10,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:40:10,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:40:10,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:40:10,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:40:10,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:40:10,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2024-11-08 18:40:10,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 84 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:40:10,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:40:10,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2024-11-08 18:40:10,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:40:11,455 INFO L124 PetriNetUnfolderBase]: 3293/6848 cut-off events. [2024-11-08 18:40:11,455 INFO L125 PetriNetUnfolderBase]: For 3994/3994 co-relation queries the response was YES. [2024-11-08 18:40:11,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16500 conditions, 6848 events. 3293/6848 cut-off events. For 3994/3994 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 47481 event pairs, 1564 based on Foata normal form. 274/6898 useless extension candidates. Maximal degree in co-relation 14342. Up to 3829 conditions per place. [2024-11-08 18:40:11,559 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 123 selfloop transitions, 2 changer transitions 0/141 dead transitions. [2024-11-08 18:40:11,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 141 transitions, 1100 flow [2024-11-08 18:40:11,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:40:11,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:40:11,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-11-08 18:40:11,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6611111111111111 [2024-11-08 18:40:11,562 INFO L175 Difference]: Start difference. First operand has 92 places, 84 transitions, 470 flow. Second operand 3 states and 119 transitions. [2024-11-08 18:40:11,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 141 transitions, 1100 flow [2024-11-08 18:40:11,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 141 transitions, 1088 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-08 18:40:11,601 INFO L231 Difference]: Finished difference. Result has 93 places, 85 transitions, 477 flow [2024-11-08 18:40:11,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=93, PETRI_TRANSITIONS=85} [2024-11-08 18:40:11,602 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 40 predicate places. [2024-11-08 18:40:11,603 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 85 transitions, 477 flow [2024-11-08 18:40:11,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:40:11,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:40:11,603 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:40:11,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 18:40:11,604 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-08 18:40:11,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:40:11,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1758325119, now seen corresponding path program 1 times [2024-11-08 18:40:11,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:40:11,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237045792] [2024-11-08 18:40:11,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:11,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:40:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:13,590 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 18:40:13,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:40:13,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237045792] [2024-11-08 18:40:13,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237045792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:40:13,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:40:13,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 18:40:13,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423044588] [2024-11-08 18:40:13,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:40:13,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:40:13,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:40:13,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:40:13,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:40:13,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-08 18:40:13,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 477 flow. Second operand has 10 states, 10 states have (on average 23.9) internal successors, (239), 10 states have internal predecessors, (239), 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 18:40:13,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:40:13,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-08 18:40:13,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:40:16,112 INFO L124 PetriNetUnfolderBase]: 3670/7683 cut-off events. [2024-11-08 18:40:16,113 INFO L125 PetriNetUnfolderBase]: For 5190/5190 co-relation queries the response was YES. [2024-11-08 18:40:16,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20022 conditions, 7683 events. 3670/7683 cut-off events. For 5190/5190 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 53057 event pairs, 786 based on Foata normal form. 0/7467 useless extension candidates. Maximal degree in co-relation 16381. Up to 3938 conditions per place. [2024-11-08 18:40:16,221 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 159 selfloop transitions, 11 changer transitions 0/188 dead transitions. [2024-11-08 18:40:16,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 188 transitions, 1288 flow [2024-11-08 18:40:16,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:40:16,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 18:40:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 363 transitions. [2024-11-08 18:40:16,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-08 18:40:16,224 INFO L175 Difference]: Start difference. First operand has 93 places, 85 transitions, 477 flow. Second operand 11 states and 363 transitions. [2024-11-08 18:40:16,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 188 transitions, 1288 flow [2024-11-08 18:40:16,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 188 transitions, 1278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:40:16,264 INFO L231 Difference]: Finished difference. Result has 106 places, 89 transitions, 537 flow [2024-11-08 18:40:16,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=537, PETRI_PLACES=106, PETRI_TRANSITIONS=89} [2024-11-08 18:40:16,265 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 53 predicate places. [2024-11-08 18:40:16,265 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 89 transitions, 537 flow [2024-11-08 18:40:16,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.9) internal successors, (239), 10 states have internal predecessors, (239), 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 18:40:16,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:40:16,266 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:40:16,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 18:40:16,266 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-08 18:40:16,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:40:16,266 INFO L85 PathProgramCache]: Analyzing trace with hash -449041189, now seen corresponding path program 1 times [2024-11-08 18:40:16,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:40:16,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415081671] [2024-11-08 18:40:16,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:16,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:40:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:16,953 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:40:16,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:40:16,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415081671] [2024-11-08 18:40:16,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415081671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:40:16,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365775280] [2024-11-08 18:40:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:16,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:40:16,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:40:16,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:40:16,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:40:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:17,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 18:40:17,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:40:17,762 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:40:17,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:40:18,134 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:40:18,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365775280] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:40:18,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:40:18,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-08 18:40:18,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980035316] [2024-11-08 18:40:18,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:40:18,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:40:18,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:40:18,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:40:18,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:40:18,313 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2024-11-08 18:40:18,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 89 transitions, 537 flow. Second operand has 17 states, 17 states have (on average 24.41176470588235) internal successors, (415), 17 states have internal predecessors, (415), 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 18:40:18,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:40:18,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2024-11-08 18:40:18,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:40:23,005 INFO L124 PetriNetUnfolderBase]: 7470/15364 cut-off events. [2024-11-08 18:40:23,006 INFO L125 PetriNetUnfolderBase]: For 11945/11945 co-relation queries the response was YES. [2024-11-08 18:40:23,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40621 conditions, 15364 events. 7470/15364 cut-off events. For 11945/11945 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 117043 event pairs, 974 based on Foata normal form. 154/15066 useless extension candidates. Maximal degree in co-relation 31862. Up to 2318 conditions per place. [2024-11-08 18:40:23,317 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 323 selfloop transitions, 57 changer transitions 0/396 dead transitions. [2024-11-08 18:40:23,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 396 transitions, 2686 flow [2024-11-08 18:40:23,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 18:40:23,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-08 18:40:23,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 710 transitions. [2024-11-08 18:40:23,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2024-11-08 18:40:23,323 INFO L175 Difference]: Start difference. First operand has 106 places, 89 transitions, 537 flow. Second operand 20 states and 710 transitions. [2024-11-08 18:40:23,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 396 transitions, 2686 flow [2024-11-08 18:40:23,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 396 transitions, 2651 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-08 18:40:23,436 INFO L231 Difference]: Finished difference. Result has 131 places, 132 transitions, 1031 flow [2024-11-08 18:40:23,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1031, PETRI_PLACES=131, PETRI_TRANSITIONS=132} [2024-11-08 18:40:23,437 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 78 predicate places. [2024-11-08 18:40:23,437 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 132 transitions, 1031 flow [2024-11-08 18:40:23,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 24.41176470588235) internal successors, (415), 17 states have internal predecessors, (415), 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 18:40:23,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:40:23,438 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:40:23,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 18:40:23,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:40:23,639 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-08 18:40:23,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:40:23,639 INFO L85 PathProgramCache]: Analyzing trace with hash 769477724, now seen corresponding path program 1 times [2024-11-08 18:40:23,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:40:23,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390280759] [2024-11-08 18:40:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:23,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:40:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:23,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:40:23,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:40:23,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390280759] [2024-11-08 18:40:23,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390280759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:40:23,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150192865] [2024-11-08 18:40:23,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:23,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:40:23,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:40:23,862 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:40:23,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:40:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:24,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 18:40:24,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:40:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:40:24,253 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:40:24,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150192865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:40:24,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:40:24,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-08 18:40:24,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751939997] [2024-11-08 18:40:24,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:40:24,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:40:24,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:40:24,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:40:24,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:40:24,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-08 18:40:24,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 132 transitions, 1031 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:40:24,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:40:24,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-08 18:40:24,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:40:27,041 INFO L124 PetriNetUnfolderBase]: 7412/15486 cut-off events. [2024-11-08 18:40:27,042 INFO L125 PetriNetUnfolderBase]: For 20344/20346 co-relation queries the response was YES. [2024-11-08 18:40:27,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43824 conditions, 15486 events. 7412/15486 cut-off events. For 20344/20346 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 121611 event pairs, 5632 based on Foata normal form. 40/15060 useless extension candidates. Maximal degree in co-relation 41260. Up to 11967 conditions per place. [2024-11-08 18:40:27,256 INFO L140 encePairwiseOnDemand]: 58/60 looper letters, 112 selfloop transitions, 1 changer transitions 2/131 dead transitions. [2024-11-08 18:40:27,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 131 transitions, 1257 flow [2024-11-08 18:40:27,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:40:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:40:27,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-08 18:40:27,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-11-08 18:40:27,257 INFO L175 Difference]: Start difference. First operand has 131 places, 132 transitions, 1031 flow. Second operand 3 states and 95 transitions. [2024-11-08 18:40:27,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 131 transitions, 1257 flow [2024-11-08 18:40:27,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 131 transitions, 1176 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-11-08 18:40:27,475 INFO L231 Difference]: Finished difference. Result has 129 places, 129 transitions, 945 flow [2024-11-08 18:40:27,476 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=945, PETRI_PLACES=129, PETRI_TRANSITIONS=129} [2024-11-08 18:40:27,478 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 76 predicate places. [2024-11-08 18:40:27,478 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 129 transitions, 945 flow [2024-11-08 18:40:27,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:40:27,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:40:27,481 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:40:27,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:40:27,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:40:27,686 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-08 18:40:27,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:40:27,686 INFO L85 PathProgramCache]: Analyzing trace with hash 527221571, now seen corresponding path program 1 times [2024-11-08 18:40:27,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:40:27,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402628468] [2024-11-08 18:40:27,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:27,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:40:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:40:29,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:40:29,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402628468] [2024-11-08 18:40:29,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402628468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:40:29,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327429890] [2024-11-08 18:40:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:29,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:40:29,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:40:29,150 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:40:29,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:40:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:29,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-08 18:40:29,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:40:29,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2024-11-08 18:40:29,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2024-11-08 18:40:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:40:30,100 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:40:30,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327429890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:40:30,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:40:30,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 18 [2024-11-08 18:40:30,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528579852] [2024-11-08 18:40:30,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:40:30,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:40:30,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:40:30,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:40:30,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:40:30,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-08 18:40:30,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 129 transitions, 945 flow. Second operand has 10 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 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 18:40:30,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:40:30,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-08 18:40:30,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:40:35,370 INFO L124 PetriNetUnfolderBase]: 10898/22447 cut-off events. [2024-11-08 18:40:35,371 INFO L125 PetriNetUnfolderBase]: For 23053/23053 co-relation queries the response was YES. [2024-11-08 18:40:35,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62440 conditions, 22447 events. 10898/22447 cut-off events. For 23053/23053 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 186204 event pairs, 1401 based on Foata normal form. 0/21929 useless extension candidates. Maximal degree in co-relation 62393. Up to 4323 conditions per place. [2024-11-08 18:40:35,700 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 148 selfloop transitions, 140 changer transitions 0/304 dead transitions. [2024-11-08 18:40:35,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 304 transitions, 2458 flow [2024-11-08 18:40:35,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 18:40:35,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-08 18:40:35,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 518 transitions. [2024-11-08 18:40:35,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5078431372549019 [2024-11-08 18:40:35,703 INFO L175 Difference]: Start difference. First operand has 129 places, 129 transitions, 945 flow. Second operand 17 states and 518 transitions. [2024-11-08 18:40:35,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 304 transitions, 2458 flow [2024-11-08 18:40:35,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 304 transitions, 2457 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:40:35,992 INFO L231 Difference]: Finished difference. Result has 146 places, 195 transitions, 1907 flow [2024-11-08 18:40:35,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1907, PETRI_PLACES=146, PETRI_TRANSITIONS=195} [2024-11-08 18:40:35,994 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 93 predicate places. [2024-11-08 18:40:35,994 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 195 transitions, 1907 flow [2024-11-08 18:40:35,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 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 18:40:35,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:40:35,995 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:40:36,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 18:40:36,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 18:40:36,196 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-08 18:40:36,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:40:36,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1696804836, now seen corresponding path program 1 times [2024-11-08 18:40:36,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:40:36,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280614843] [2024-11-08 18:40:36,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:36,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:40:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:36,855 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:40:36,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:40:36,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280614843] [2024-11-08 18:40:36,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280614843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:40:36,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577780683] [2024-11-08 18:40:36,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:36,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:40:36,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:40:36,859 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:40:36,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:40:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:37,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 18:40:37,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:40:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:40:37,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:40:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:40:38,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577780683] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:40:38,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:40:38,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-08 18:40:38,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511758095] [2024-11-08 18:40:38,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:40:38,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:40:38,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:40:38,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:40:38,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:40:38,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2024-11-08 18:40:38,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 195 transitions, 1907 flow. Second operand has 17 states, 17 states have (on average 25.647058823529413) internal successors, (436), 17 states have internal predecessors, (436), 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 18:40:38,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:40:38,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2024-11-08 18:40:38,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:40:44,559 INFO L124 PetriNetUnfolderBase]: 11191/22464 cut-off events. [2024-11-08 18:40:44,559 INFO L125 PetriNetUnfolderBase]: For 35491/35497 co-relation queries the response was YES. [2024-11-08 18:40:45,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67738 conditions, 22464 events. 11191/22464 cut-off events. For 35491/35497 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 181092 event pairs, 1963 based on Foata normal form. 148/22152 useless extension candidates. Maximal degree in co-relation 67686. Up to 3480 conditions per place. [2024-11-08 18:40:45,195 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 394 selfloop transitions, 149 changer transitions 0/557 dead transitions. [2024-11-08 18:40:45,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 557 transitions, 5069 flow [2024-11-08 18:40:45,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 18:40:45,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-08 18:40:45,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 834 transitions. [2024-11-08 18:40:45,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.556 [2024-11-08 18:40:45,204 INFO L175 Difference]: Start difference. First operand has 146 places, 195 transitions, 1907 flow. Second operand 25 states and 834 transitions. [2024-11-08 18:40:45,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 557 transitions, 5069 flow [2024-11-08 18:40:45,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 557 transitions, 4668 flow, removed 200 selfloop flow, removed 1 redundant places. [2024-11-08 18:40:45,554 INFO L231 Difference]: Finished difference. Result has 181 places, 275 transitions, 2932 flow [2024-11-08 18:40:45,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2932, PETRI_PLACES=181, PETRI_TRANSITIONS=275} [2024-11-08 18:40:45,555 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 128 predicate places. [2024-11-08 18:40:45,555 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 275 transitions, 2932 flow [2024-11-08 18:40:45,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 25.647058823529413) internal successors, (436), 17 states have internal predecessors, (436), 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 18:40:45,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:40:45,556 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:40:45,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 18:40:45,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 18:40:45,757 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-08 18:40:45,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:40:45,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1535584180, now seen corresponding path program 1 times [2024-11-08 18:40:45,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:40:45,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911956858] [2024-11-08 18:40:45,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:45,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:40:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:46,095 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:40:46,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:40:46,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911956858] [2024-11-08 18:40:46,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911956858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:40:46,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551309482] [2024-11-08 18:40:46,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:46,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:40:46,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:40:46,098 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:40:46,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:40:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:46,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:40:46,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:40:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:40:46,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:40:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:40:46,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551309482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:40:46,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:40:46,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-08 18:40:46,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914647155] [2024-11-08 18:40:46,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:40:46,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 18:40:46,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:40:46,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 18:40:46,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:40:46,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-08 18:40:46,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 275 transitions, 2932 flow. Second operand has 11 states, 11 states have (on average 27.272727272727273) internal successors, (300), 11 states have internal predecessors, (300), 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 18:40:46,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:40:46,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-08 18:40:46,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:40:54,471 INFO L124 PetriNetUnfolderBase]: 17630/36121 cut-off events. [2024-11-08 18:40:54,472 INFO L125 PetriNetUnfolderBase]: For 83316/83362 co-relation queries the response was YES. [2024-11-08 18:40:55,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112302 conditions, 36121 events. 17630/36121 cut-off events. For 83316/83362 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 310369 event pairs, 4515 based on Foata normal form. 1098/36931 useless extension candidates. Maximal degree in co-relation 112237. Up to 5458 conditions per place. [2024-11-08 18:40:55,155 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 579 selfloop transitions, 168 changer transitions 0/762 dead transitions. [2024-11-08 18:40:55,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 762 transitions, 8581 flow [2024-11-08 18:40:55,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:40:55,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 18:40:55,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 479 transitions. [2024-11-08 18:40:55,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7257575757575757 [2024-11-08 18:40:55,158 INFO L175 Difference]: Start difference. First operand has 181 places, 275 transitions, 2932 flow. Second operand 11 states and 479 transitions. [2024-11-08 18:40:55,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 762 transitions, 8581 flow [2024-11-08 18:40:55,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 762 transitions, 8008 flow, removed 219 selfloop flow, removed 10 redundant places. [2024-11-08 18:40:55,837 INFO L231 Difference]: Finished difference. Result has 190 places, 361 transitions, 4452 flow [2024-11-08 18:40:55,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2328, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4452, PETRI_PLACES=190, PETRI_TRANSITIONS=361} [2024-11-08 18:40:55,838 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 137 predicate places. [2024-11-08 18:40:55,838 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 361 transitions, 4452 flow [2024-11-08 18:40:55,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 27.272727272727273) internal successors, (300), 11 states have internal predecessors, (300), 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 18:40:55,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:40:55,839 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:40:55,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 18:40:56,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 18:40:56,044 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-08 18:40:56,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:40:56,044 INFO L85 PathProgramCache]: Analyzing trace with hash -47193022, now seen corresponding path program 1 times [2024-11-08 18:40:56,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:40:56,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675160553] [2024-11-08 18:40:56,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:56,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:40:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:56,159 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 18:40:56,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:40:56,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675160553] [2024-11-08 18:40:56,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675160553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:40:56,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:40:56,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:40:56,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772866294] [2024-11-08 18:40:56,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:40:56,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:40:56,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:40:56,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:40:56,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:40:56,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-08 18:40:56,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 361 transitions, 4452 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 18:40:56,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:40:56,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-08 18:40:56,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:41:03,347 INFO L124 PetriNetUnfolderBase]: 15958/32638 cut-off events. [2024-11-08 18:41:03,347 INFO L125 PetriNetUnfolderBase]: For 82189/82236 co-relation queries the response was YES. [2024-11-08 18:41:04,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104918 conditions, 32638 events. 15958/32638 cut-off events. For 82189/82236 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 275206 event pairs, 10773 based on Foata normal form. 413/32898 useless extension candidates. Maximal degree in co-relation 104852. Up to 22609 conditions per place. [2024-11-08 18:41:04,109 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 270 selfloop transitions, 77 changer transitions 0/362 dead transitions. [2024-11-08 18:41:04,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 362 transitions, 4995 flow [2024-11-08 18:41:04,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:41:04,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:41:04,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-11-08 18:41:04,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-08 18:41:04,110 INFO L175 Difference]: Start difference. First operand has 190 places, 361 transitions, 4452 flow. Second operand 3 states and 114 transitions. [2024-11-08 18:41:04,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 362 transitions, 4995 flow [2024-11-08 18:41:04,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 362 transitions, 4902 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-11-08 18:41:04,643 INFO L231 Difference]: Finished difference. Result has 190 places, 333 transitions, 4322 flow [2024-11-08 18:41:04,644 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=3920, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4322, PETRI_PLACES=190, PETRI_TRANSITIONS=333} [2024-11-08 18:41:04,644 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 137 predicate places. [2024-11-08 18:41:04,644 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 333 transitions, 4322 flow [2024-11-08 18:41:04,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 18:41:04,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:41:04,645 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:41:04,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 18:41:04,646 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-08 18:41:04,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:41:04,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2010369475, now seen corresponding path program 1 times [2024-11-08 18:41:04,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:41:04,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449728826] [2024-11-08 18:41:04,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:41:04,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:41:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:41:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:41:06,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:41:06,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449728826] [2024-11-08 18:41:06,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449728826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:41:06,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872522261] [2024-11-08 18:41:06,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:41:06,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:41:06,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:41:06,854 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:41:06,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46508d05-966d-4618-91ce-9d047029ae19/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:41:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:41:07,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-08 18:41:07,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:41:07,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2024-11-08 18:41:07,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:41:07,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 19 [2024-11-08 18:41:07,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2024-11-08 18:41:07,874 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:41:07,874 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:41:08,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2024-11-08 18:41:08,624 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:41:08,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872522261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:41:08,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:41:08,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2024-11-08 18:41:08,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784413939] [2024-11-08 18:41:08,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:41:08,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 18:41:08,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:41:08,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 18:41:08,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 18:41:09,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-08 18:41:09,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 333 transitions, 4322 flow. Second operand has 35 states, 35 states have (on average 24.0) internal successors, (840), 35 states have internal predecessors, (840), 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 18:41:09,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:41:09,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-08 18:41:09,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand