./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd --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 7225a3dc80a635bdf8bc0a0aebf3fff6c385d87e3635c30eb2fdc2ad9b10efb0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:01:37,091 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:01:37,176 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 13:01:37,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:01:37,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:01:37,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:01:37,225 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:01:37,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:01:37,225 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:01:37,226 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:01:37,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:01:37,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:01:37,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:01:37,226 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:01:37,226 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:01:37,227 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:01:37,227 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:01:37,227 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:01:37,227 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:01:37,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:01:37,227 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 13:01:37,227 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 13:01:37,227 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 13:01:37,228 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:01:37,228 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 13:01:37,228 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:01:37,228 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:01:37,230 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:01:37,230 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:01:37,230 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:01:37,231 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:01:37,231 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:01:37,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:01:37,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:01:37,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:01:37,232 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:01:37,232 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:01:37,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:01:37,232 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:01:37,232 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:01:37,232 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:01:37,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:01:37,232 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd 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 -> 7225a3dc80a635bdf8bc0a0aebf3fff6c385d87e3635c30eb2fdc2ad9b10efb0 [2024-11-13 13:01:37,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:01:37,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:01:37,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:01:37,591 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:01:37,591 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:01:37,594 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c Unable to find full path for "g++" [2024-11-13 13:01:39,442 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:01:39,747 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:01:39,747 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2024-11-13 13:01:39,778 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/data/d385aef26/e8d40d4fd1824b83a7fe1e7fee3db26b/FLAGea9fb5c84 [2024-11-13 13:01:39,819 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/data/d385aef26/e8d40d4fd1824b83a7fe1e7fee3db26b [2024-11-13 13:01:39,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:01:39,826 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:01:39,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:01:39,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:01:39,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:01:39,834 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:01:39" (1/1) ... [2024-11-13 13:01:39,835 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5303897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:01:39, skipping insertion in model container [2024-11-13 13:01:39,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:01:39" (1/1) ... [2024-11-13 13:01:39,865 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:01:40,064 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 13:01:40,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:01:40,083 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:01:40,130 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:01:40,152 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:01:40,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:01:40 WrapperNode [2024-11-13 13:01:40,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:01:40,154 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:01:40,155 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:01:40,155 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:01:40,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:01:40" (1/1) ... [2024-11-13 13:01:40,175 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:01:40" (1/1) ... [2024-11-13 13:01:40,209 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 155 [2024-11-13 13:01:40,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:01:40,210 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:01:40,210 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:01:40,210 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:01:40,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:01:40" (1/1) ... [2024-11-13 13:01:40,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:01:40" (1/1) ... [2024-11-13 13:01:40,225 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:01:40" (1/1) ... [2024-11-13 13:01:40,254 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 13:01:40,254 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:01:40" (1/1) ... [2024-11-13 13:01:40,254 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:01:40" (1/1) ... [2024-11-13 13:01:40,266 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:01:40" (1/1) ... [2024-11-13 13:01:40,269 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:01:40" (1/1) ... [2024-11-13 13:01:40,276 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:01:40" (1/1) ... [2024-11-13 13:01:40,277 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:01:40" (1/1) ... [2024-11-13 13:01:40,279 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:01:40,280 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:01:40,280 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:01:40,280 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:01:40,281 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:01:40" (1/1) ... [2024-11-13 13:01:40,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:01:40,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:01:40,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:01:40,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:01:40,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:01:40,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 13:01:40,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 13:01:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 13:01:40,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 13:01:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 13:01:40,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 13:01:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:01:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:01:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:01:40,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 13:01:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 13:01:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 13:01:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 13:01:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:01:40,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:01:40,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:01:40,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 13:01:40,363 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 13:01:40,497 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:01:40,499 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:01:40,860 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:01:40,860 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:01:41,125 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:01:41,125 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 13:01:41,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:01:41 BoogieIcfgContainer [2024-11-13 13:01:41,127 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:01:41,130 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:01:41,130 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:01:41,138 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:01:41,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:01:39" (1/3) ... [2024-11-13 13:01:41,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1139d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:01:41, skipping insertion in model container [2024-11-13 13:01:41,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:01:40" (2/3) ... [2024-11-13 13:01:41,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1139d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:01:41, skipping insertion in model container [2024-11-13 13:01:41,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:01:41" (3/3) ... [2024-11-13 13:01:41,141 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons.wvr.c [2024-11-13 13:01:41,158 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:01:41,159 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-prod-cons.wvr.c that has 4 procedures, 43 locations, 1 initial locations, 3 loop locations, and 8 error locations. [2024-11-13 13:01:41,160 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:01:41,233 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 13:01:41,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 46 transitions, 113 flow [2024-11-13 13:01:41,302 INFO L124 PetriNetUnfolderBase]: 4/43 cut-off events. [2024-11-13 13:01:41,305 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 13:01:41,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 43 events. 4/43 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 96 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-11-13 13:01:41,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 46 transitions, 113 flow [2024-11-13 13:01:41,315 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 42 transitions, 102 flow [2024-11-13 13:01:41,326 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:01:41,339 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;@5284ca37, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:01:41,339 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-13 13:01:41,343 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:01:41,344 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-13 13:01:41,344 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:01:41,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:01:41,344 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:01:41,345 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 13:01:41,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:41,350 INFO L85 PathProgramCache]: Analyzing trace with hash 473753, now seen corresponding path program 1 times [2024-11-13 13:01:41,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:41,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869753432] [2024-11-13 13:01:41,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:41,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:41,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:41,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869753432] [2024-11-13 13:01:41,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869753432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:41,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:41,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:01:41,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742854667] [2024-11-13 13:01:41,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:41,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:01:41,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:41,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:01:41,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:01:41,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-11-13 13:01:41,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-11-13 13:01:41,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:01:41,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-11-13 13:01:41,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:01:42,080 INFO L124 PetriNetUnfolderBase]: 503/898 cut-off events. [2024-11-13 13:01:42,080 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-13 13:01:42,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1798 conditions, 898 events. 503/898 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5629 event pairs, 456 based on Foata normal form. 1/658 useless extension candidates. Maximal degree in co-relation 1698. Up to 778 conditions per place. [2024-11-13 13:01:42,101 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 25 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-11-13 13:01:42,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 150 flow [2024-11-13 13:01:42,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:01:42,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:01:42,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-13 13:01:42,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2024-11-13 13:01:42,123 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 102 flow. Second operand 3 states and 77 transitions. [2024-11-13 13:01:42,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 150 flow [2024-11-13 13:01:42,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 138 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 13:01:42,144 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 88 flow [2024-11-13 13:01:42,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2024-11-13 13:01:42,153 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -7 predicate places. [2024-11-13 13:01:42,153 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 88 flow [2024-11-13 13:01:42,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-11-13 13:01:42,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:01:42,154 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:01:42,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:01:42,154 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 13:01:42,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:42,155 INFO L85 PathProgramCache]: Analyzing trace with hash 473754, now seen corresponding path program 1 times [2024-11-13 13:01:42,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:42,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653783541] [2024-11-13 13:01:42,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:42,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:42,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:42,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:42,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653783541] [2024-11-13 13:01:42,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653783541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:42,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:42,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:01:42,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024625821] [2024-11-13 13:01:42,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:42,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:01:42,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:42,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:01:42,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:01:42,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-11-13 13:01:42,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:42,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:01:42,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-11-13 13:01:42,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:01:42,859 INFO L124 PetriNetUnfolderBase]: 504/901 cut-off events. [2024-11-13 13:01:42,859 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:01:42,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1741 conditions, 901 events. 504/901 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5649 event pairs, 456 based on Foata normal form. 0/660 useless extension candidates. Maximal degree in co-relation 1719. Up to 783 conditions per place. [2024-11-13 13:01:42,868 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 27 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-11-13 13:01:42,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 158 flow [2024-11-13 13:01:42,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:01:42,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:01:42,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-13 13:01:42,870 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-11-13 13:01:42,870 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 88 flow. Second operand 4 states and 96 transitions. [2024-11-13 13:01:42,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 158 flow [2024-11-13 13:01:42,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:01:42,873 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 111 flow [2024-11-13 13:01:42,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2024-11-13 13:01:42,876 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2024-11-13 13:01:42,876 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 111 flow [2024-11-13 13:01:42,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:42,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:01:42,877 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-13 13:01:42,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:01:42,878 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 13:01:42,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:42,879 INFO L85 PathProgramCache]: Analyzing trace with hash 455291990, now seen corresponding path program 1 times [2024-11-13 13:01:42,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:42,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808424761] [2024-11-13 13:01:42,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:42,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:43,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:43,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:43,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808424761] [2024-11-13 13:01:43,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808424761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:01:43,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800354057] [2024-11-13 13:01:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:43,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:43,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:01:43,310 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:01:43,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:01:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:43,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 13:01:43,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:01:43,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 9 [2024-11-13 13:01:43,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:43,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:01:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:44,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800354057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:01:44,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:01:44,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-13 13:01:44,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452029501] [2024-11-13 13:01:44,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:01:44,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:01:44,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:44,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:01:44,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:01:44,078 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-11-13 13:01:44,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 111 flow. Second operand has 11 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 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) [2024-11-13 13:01:44,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:01:44,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-11-13 13:01:44,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:01:44,621 INFO L124 PetriNetUnfolderBase]: 504/900 cut-off events. [2024-11-13 13:01:44,621 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:01:44,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1748 conditions, 900 events. 504/900 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5626 event pairs, 456 based on Foata normal form. 0/659 useless extension candidates. Maximal degree in co-relation 1726. Up to 779 conditions per place. [2024-11-13 13:01:44,629 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 23 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-11-13 13:01:44,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 167 flow [2024-11-13 13:01:44,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:01:44,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:01:44,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-11-13 13:01:44,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4601449275362319 [2024-11-13 13:01:44,631 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 111 flow. Second operand 6 states and 127 transitions. [2024-11-13 13:01:44,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 167 flow [2024-11-13 13:01:44,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 41 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:01:44,633 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 118 flow [2024-11-13 13:01:44,633 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-11-13 13:01:44,633 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2024-11-13 13:01:44,634 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 118 flow [2024-11-13 13:01:44,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 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) [2024-11-13 13:01:44,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:01:44,634 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:44,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 13:01:44,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:44,838 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 13:01:44,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:44,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1757088656, now seen corresponding path program 1 times [2024-11-13 13:01:44,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:44,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136395137] [2024-11-13 13:01:44,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:44,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:44,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:44,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:44,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136395137] [2024-11-13 13:01:44,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136395137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:44,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:44,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:01:44,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236505873] [2024-11-13 13:01:44,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:44,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:01:44,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:44,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:01:44,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:01:44,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-11-13 13:01:44,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:44,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:01:44,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-11-13 13:01:44,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:01:45,117 INFO L124 PetriNetUnfolderBase]: 360/653 cut-off events. [2024-11-13 13:01:45,117 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:01:45,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 653 events. 360/653 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3677 event pairs, 319 based on Foata normal form. 0/522 useless extension candidates. Maximal degree in co-relation 1248. Up to 559 conditions per place. [2024-11-13 13:01:45,126 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 25 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2024-11-13 13:01:45,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 170 flow [2024-11-13 13:01:45,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:01:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:01:45,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-13 13:01:45,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-11-13 13:01:45,128 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 118 flow. Second operand 4 states and 91 transitions. [2024-11-13 13:01:45,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 170 flow [2024-11-13 13:01:45,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 140 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-13 13:01:45,133 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 90 flow [2024-11-13 13:01:45,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2024-11-13 13:01:45,134 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -7 predicate places. [2024-11-13 13:01:45,134 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 90 flow [2024-11-13 13:01:45,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:45,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:01:45,135 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:45,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:01:45,135 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 13:01:45,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:45,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1757088657, now seen corresponding path program 1 times [2024-11-13 13:01:45,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:45,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536217137] [2024-11-13 13:01:45,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:45,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:45,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:45,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536217137] [2024-11-13 13:01:45,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536217137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:45,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:45,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:01:45,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755960343] [2024-11-13 13:01:45,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:45,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:01:45,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:45,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:01:45,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:01:45,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-11-13 13:01:45,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-13 13:01:45,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:01:45,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-11-13 13:01:45,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:01:45,515 INFO L124 PetriNetUnfolderBase]: 478/899 cut-off events. [2024-11-13 13:01:45,515 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:01:45,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1730 conditions, 899 events. 478/899 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5261 event pairs, 436 based on Foata normal form. 33/800 useless extension candidates. Maximal degree in co-relation 1240. Up to 562 conditions per place. [2024-11-13 13:01:45,524 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 41 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2024-11-13 13:01:45,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 216 flow [2024-11-13 13:01:45,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:01:45,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:01:45,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-13 13:01:45,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-11-13 13:01:45,527 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 90 flow. Second operand 4 states and 116 transitions. [2024-11-13 13:01:45,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 216 flow [2024-11-13 13:01:45,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:01:45,530 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 101 flow [2024-11-13 13:01:45,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-11-13 13:01:45,531 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2024-11-13 13:01:45,531 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 101 flow [2024-11-13 13:01:45,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-13 13:01:45,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:01:45,532 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:45,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:01:45,532 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 13:01:45,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:45,532 INFO L85 PathProgramCache]: Analyzing trace with hash 771868501, now seen corresponding path program 1 times [2024-11-13 13:01:45,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:45,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054841242] [2024-11-13 13:01:45,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:45,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:45,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:45,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054841242] [2024-11-13 13:01:45,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054841242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:01:45,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724608290] [2024-11-13 13:01:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:45,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:45,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:01:45,833 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:01:45,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:01:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:45,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 13:01:45,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:01:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:46,057 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:01:46,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724608290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:46,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:01:46,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2024-11-13 13:01:46,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532209211] [2024-11-13 13:01:46,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:46,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:01:46,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:46,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:01:46,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:01:46,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-11-13 13:01:46,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2024-11-13 13:01:46,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:01:46,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-11-13 13:01:46,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:01:46,238 INFO L124 PetriNetUnfolderBase]: 358/692 cut-off events. [2024-11-13 13:01:46,238 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-13 13:01:46,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390 conditions, 692 events. 358/692 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3741 event pairs, 323 based on Foata normal form. 0/624 useless extension candidates. Maximal degree in co-relation 904. Up to 583 conditions per place. [2024-11-13 13:01:46,243 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 23 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2024-11-13 13:01:46,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 145 flow [2024-11-13 13:01:46,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:01:46,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:01:46,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-13 13:01:46,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-11-13 13:01:46,245 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 101 flow. Second operand 4 states and 93 transitions. [2024-11-13 13:01:46,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 145 flow [2024-11-13 13:01:46,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 37 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:01:46,247 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 94 flow [2024-11-13 13:01:46,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-11-13 13:01:46,248 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -6 predicate places. [2024-11-13 13:01:46,248 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 94 flow [2024-11-13 13:01:46,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2024-11-13 13:01:46,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:01:46,248 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] [2024-11-13 13:01:46,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 13:01:46,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 13:01:46,452 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 13:01:46,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:46,453 INFO L85 PathProgramCache]: Analyzing trace with hash -85400873, now seen corresponding path program 1 times [2024-11-13 13:01:46,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:46,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618119888] [2024-11-13 13:01:46,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:46,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:46,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:46,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:46,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618119888] [2024-11-13 13:01:46,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618119888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:46,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:46,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:01:46,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999484550] [2024-11-13 13:01:46,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:46,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:01:46,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:46,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:01:46,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:01:46,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-11-13 13:01:46,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-11-13 13:01:46,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:01:46,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-11-13 13:01:46,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:01:46,897 INFO L124 PetriNetUnfolderBase]: 718/1282 cut-off events. [2024-11-13 13:01:46,897 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2024-11-13 13:01:46,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2571 conditions, 1282 events. 718/1282 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6546 event pairs, 145 based on Foata normal form. 78/1333 useless extension candidates. Maximal degree in co-relation 1748. Up to 576 conditions per place. [2024-11-13 13:01:46,905 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 55 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2024-11-13 13:01:46,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 68 transitions, 290 flow [2024-11-13 13:01:46,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:01:46,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:01:46,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-13 13:01:46,907 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5608695652173913 [2024-11-13 13:01:46,907 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 94 flow. Second operand 5 states and 129 transitions. [2024-11-13 13:01:46,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 68 transitions, 290 flow [2024-11-13 13:01:46,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 68 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:01:46,910 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 121 flow [2024-11-13 13:01:46,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-11-13 13:01:46,911 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2024-11-13 13:01:46,911 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 121 flow [2024-11-13 13:01:46,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-11-13 13:01:46,912 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:01:46,912 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] [2024-11-13 13:01:46,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:01:46,913 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 13:01:46,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:46,913 INFO L85 PathProgramCache]: Analyzing trace with hash -2018785435, now seen corresponding path program 2 times [2024-11-13 13:01:46,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:46,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342783075] [2024-11-13 13:01:46,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:46,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:47,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:47,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342783075] [2024-11-13 13:01:47,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342783075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:47,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:47,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:01:47,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738537380] [2024-11-13 13:01:47,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:47,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:01:47,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:47,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:01:47,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:01:47,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-11-13 13:01:47,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:47,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:01:47,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-11-13 13:01:47,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:01:47,456 INFO L124 PetriNetUnfolderBase]: 1131/1929 cut-off events. [2024-11-13 13:01:47,456 INFO L125 PetriNetUnfolderBase]: For 728/750 co-relation queries the response was YES. [2024-11-13 13:01:47,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4481 conditions, 1929 events. 1131/1929 cut-off events. For 728/750 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10486 event pairs, 509 based on Foata normal form. 25/1863 useless extension candidates. Maximal degree in co-relation 3765. Up to 840 conditions per place. [2024-11-13 13:01:47,468 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 49 selfloop transitions, 4 changer transitions 5/69 dead transitions. [2024-11-13 13:01:47,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 322 flow [2024-11-13 13:01:47,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:01:47,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:01:47,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-13 13:01:47,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5695652173913044 [2024-11-13 13:01:47,470 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 121 flow. Second operand 5 states and 131 transitions. [2024-11-13 13:01:47,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 322 flow [2024-11-13 13:01:47,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 69 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:01:47,473 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 140 flow [2024-11-13 13:01:47,473 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-11-13 13:01:47,474 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2024-11-13 13:01:47,475 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 140 flow [2024-11-13 13:01:47,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:47,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:01:47,476 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] [2024-11-13 13:01:47,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:01:47,476 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 13:01:47,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:47,477 INFO L85 PathProgramCache]: Analyzing trace with hash 966265478, now seen corresponding path program 1 times [2024-11-13 13:01:47,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:47,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921369193] [2024-11-13 13:01:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:47,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:01:47,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:47,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921369193] [2024-11-13 13:01:47,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921369193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:01:47,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:01:47,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:01:47,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248386142] [2024-11-13 13:01:47,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:01:47,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:01:47,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:47,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:01:47,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:01:47,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-11-13 13:01:47,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 140 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) [2024-11-13 13:01:47,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:01:47,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-11-13 13:01:47,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:01:47,783 INFO L124 PetriNetUnfolderBase]: 647/1258 cut-off events. [2024-11-13 13:01:47,785 INFO L125 PetriNetUnfolderBase]: For 488/532 co-relation queries the response was YES. [2024-11-13 13:01:47,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2840 conditions, 1258 events. 647/1258 cut-off events. For 488/532 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7062 event pairs, 266 based on Foata normal form. 45/1190 useless extension candidates. Maximal degree in co-relation 2814. Up to 716 conditions per place. [2024-11-13 13:01:47,793 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 30 selfloop transitions, 2 changer transitions 7/55 dead transitions. [2024-11-13 13:01:47,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 55 transitions, 257 flow [2024-11-13 13:01:47,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:01:47,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:01:47,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-13 13:01:47,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.644927536231884 [2024-11-13 13:01:47,797 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 140 flow. Second operand 3 states and 89 transitions. [2024-11-13 13:01:47,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 55 transitions, 257 flow [2024-11-13 13:01:47,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 253 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:01:47,802 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 150 flow [2024-11-13 13:01:47,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-11-13 13:01:47,803 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2024-11-13 13:01:47,803 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 150 flow [2024-11-13 13:01:47,803 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) [2024-11-13 13:01:47,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:01:47,803 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, 1] [2024-11-13 13:01:47,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:01:47,805 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 13:01:47,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:47,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1805790014, now seen corresponding path program 1 times [2024-11-13 13:01:47,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:47,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694600576] [2024-11-13 13:01:47,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:47,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:48,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:48,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694600576] [2024-11-13 13:01:48,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694600576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:01:48,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731903092] [2024-11-13 13:01:48,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:48,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:48,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:01:48,786 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:01:48,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:01:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:48,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 13:01:48,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:01:49,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:49,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:01:49,711 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:01:49,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2024-11-13 13:01:50,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:50,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731903092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:01:50,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:01:50,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2024-11-13 13:01:50,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798133572] [2024-11-13 13:01:50,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:01:50,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 13:01:50,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:50,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 13:01:50,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2024-11-13 13:01:50,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-11-13 13:01:50,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 150 flow. Second operand has 28 states, 28 states have (on average 16.785714285714285) internal successors, (470), 28 states have internal predecessors, (470), 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) [2024-11-13 13:01:50,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:01:50,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-11-13 13:01:50,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:01:54,337 INFO L124 PetriNetUnfolderBase]: 4762/8040 cut-off events. [2024-11-13 13:01:54,337 INFO L125 PetriNetUnfolderBase]: For 5789/5906 co-relation queries the response was YES. [2024-11-13 13:01:54,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20282 conditions, 8040 events. 4762/8040 cut-off events. For 5789/5906 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 53521 event pairs, 320 based on Foata normal form. 110/7575 useless extension candidates. Maximal degree in co-relation 11775. Up to 1018 conditions per place. [2024-11-13 13:01:54,385 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 205 selfloop transitions, 54 changer transitions 175/443 dead transitions. [2024-11-13 13:01:54,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 443 transitions, 2359 flow [2024-11-13 13:01:54,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-13 13:01:54,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-13 13:01:54,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 997 transitions. [2024-11-13 13:01:54,391 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5286320254506893 [2024-11-13 13:01:54,391 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 150 flow. Second operand 41 states and 997 transitions. [2024-11-13 13:01:54,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 443 transitions, 2359 flow [2024-11-13 13:01:54,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 443 transitions, 2285 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-11-13 13:01:54,408 INFO L231 Difference]: Finished difference. Result has 109 places, 100 transitions, 580 flow [2024-11-13 13:01:54,410 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=580, PETRI_PLACES=109, PETRI_TRANSITIONS=100} [2024-11-13 13:01:54,411 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 61 predicate places. [2024-11-13 13:01:54,412 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 100 transitions, 580 flow [2024-11-13 13:01:54,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 16.785714285714285) internal successors, (470), 28 states have internal predecessors, (470), 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) [2024-11-13 13:01:54,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:01:54,414 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:54,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:01:54,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 13:01:54,614 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 13:01:54,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:54,615 INFO L85 PathProgramCache]: Analyzing trace with hash 331438411, now seen corresponding path program 2 times [2024-11-13 13:01:54,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:54,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118023548] [2024-11-13 13:01:54,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:54,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:54,864 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:54,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:54,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118023548] [2024-11-13 13:01:54,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118023548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:01:54,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286422239] [2024-11-13 13:01:54,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:01:54,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:54,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:01:54,868 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:01:54,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:01:54,980 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:01:54,980 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:01:54,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 13:01:54,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:01:55,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:55,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:01:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:55,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286422239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:01:55,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:01:55,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-13 13:01:55,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759629567] [2024-11-13 13:01:55,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:01:55,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 13:01:55,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:55,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 13:01:55,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:01:55,508 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-11-13 13:01:55,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 100 transitions, 580 flow. Second operand has 17 states, 17 states have (on average 20.647058823529413) internal successors, (351), 17 states have internal predecessors, (351), 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) [2024-11-13 13:01:55,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:01:55,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-11-13 13:01:55,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:01:56,278 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([453] L48-7-->thread1EXIT: Formula: (and (= |v_thread1Thread1of1ForFork0_#res#1.offset_1| 0) (= |v_thread1Thread1of1ForFork0_#res#1.base_1| 0)) InVars {} OutVars{thread1Thread1of1ForFork0_#res#1.offset=|v_thread1Thread1of1ForFork0_#res#1.offset_1|, thread1Thread1of1ForFork0_~w~0#1=|v_thread1Thread1of1ForFork0_~w~0#1_7|, thread1Thread1of1ForFork0_#res#1.base=|v_thread1Thread1of1ForFork0_#res#1.base_1|} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#res#1.offset, thread1Thread1of1ForFork0_~w~0#1, thread1Thread1of1ForFork0_#res#1.base][113], [Black: 408#(and (= ~v_assert~0 1) (or (< ~back~0 0) (< ~d~0 ~W~0) (< ~n~0 (+ ~back~0 1)) (< |thread1Thread1of1ForFork0_~w~0#1| 1)) (or (< ~back~0 0) (and (= ~back~0 ~front~0) (<= ~d~0 0)) (< ~n~0 (+ ~back~0 1)))), Black: 424#(and (<= (+ ~d~0 (select (select |#memory_int#1| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) ~W~0) (= ~v_assert~0 1) (<= ~d~0 ~W~0) (or (< ~back~0 0) (< ~n~0 (+ ~back~0 1)) (< |thread1Thread1of1ForFork0_~w~0#1| 1) (and (= ~back~0 ~front~0) (<= (+ ~d~0 1) ~W~0)))), Black: 436#(and (= ~d~0 0) (= (select (select |#memory_int#1| ~queue~0.base) 0) 1) (= ~v_assert~0 1) (= ~queue~0.offset 0) (= ~front~0 0) (<= 1 ~W~0) (or (< ~back~0 0) (= ~back~0 0) (< ~n~0 (+ ~back~0 1)) (< |thread1Thread1of1ForFork0_~w~0#1| 1))), Black: 452#(and (<= (+ ~d~0 (select (select |#memory_int#1| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) ~W~0) (<= ~d~0 ~W~0) (or (< ~back~0 0) (< ~n~0 (+ ~back~0 1)) (< |thread1Thread1of1ForFork0_~w~0#1| 1) (and (= ~back~0 ~front~0) (<= (+ ~d~0 1) ~W~0)))), Black: 418#(and (= ~d~0 0) (= (select (select |#memory_int#1| ~queue~0.base) 0) 1) (= ~v_assert~0 1) (or (< ~back~0 1) (< ~n~0 2)) (= ~queue~0.offset 0) (= ~front~0 0) (<= 1 ~W~0)), Black: 428#(and (= ~d~0 0) (= (select (select |#memory_int#1| ~queue~0.base) 0) 1) (= ~v_assert~0 1) (= ~queue~0.offset 0) (= ~front~0 0) (<= 1 ~W~0)), Black: 462#(and (= ~v_assert~0 1) (or (< ~back~0 0) (< ~n~0 (+ ~back~0 1)) (< |thread1Thread1of1ForFork0_~w~0#1| 1) (and (= ~back~0 ~front~0) (<= (+ ~d~0 1) ~W~0)))), Black: 422#(and (= |thread2Thread1of1ForFork1_~temp~0#1| 1) (or (and (= ~queue~0.offset 0) (= ~front~0 0)) (not (= ~back~0 0))) (= ~d~0 0) (= ~v_assert~0 1) (or (< ~back~0 1) (< ~n~0 2)) (<= 1 ~W~0) (or (not (= ~back~0 0)) (< |thread1Thread1of1ForFork0_~w~0#1| (+ ~W~0 1)))), Black: 434#(and (<= ~d~0 1) (= ~v_assert~0 1) (<= 1 ~W~0)), Black: 410#(and (= ~v_assert~0 1) (or (< ~back~0 0) (< ~d~0 ~W~0) (< ~n~0 (+ ~back~0 1))) (or (< ~back~0 0) (and (= ~back~0 ~front~0) (<= ~d~0 0)) (< ~n~0 (+ ~back~0 1)))), Black: 414#(and (= ~d~0 0) (= (select (select |#memory_int#1| ~queue~0.base) 0) 1) (= ~v_assert~0 1) (or (< ~back~0 1) (< ~n~0 2)) (= ~queue~0.offset 0) (= ~front~0 0) (<= 1 ~W~0) (or (not (= ~back~0 0)) (< |thread1Thread1of1ForFork0_~w~0#1| (+ ~W~0 1)))), Black: 432#(and (<= (+ ~d~0 (select (select |#memory_int#1| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) ~W~0) (<= ~d~0 ~W~0)), Black: 154#(and (<= (div |thread2Thread1of1ForFork1_~cond~1#1| 256) 0) (<= 1 |thread2Thread1of1ForFork1_~cond~1#1|)), Black: 156#(and (<= (div |thread2Thread1of1ForFork1_~cond~1#1| 256) 0) (<= 1 |thread2Thread1of1ForFork1_~cond~1#1|) (= ~v_assert~0 1)), Black: 398#(and (<= |ULTIMATE.start_create_fresh_int_array_~i~0#1| 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= ~back~0 ~front~0) (= ~v_assert~0 1) (or (= ~d~0 0) (not (= ~back~0 0))) (<= ~d~0 0) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)), Black: 153#(= ~v_assert~0 1), Black: 404#(and (= ~back~0 ~front~0) (= ~v_assert~0 1) (<= |thread1Thread1of1ForFork0_~w~0#1| ~W~0) (or (= ~d~0 0) (not (= ~back~0 0))) (<= ~d~0 ~W~0) (= ~queue~0.offset 0) (<= ~d~0 0) (<= ~n~0 1)), Black: 420#(and (or (< ~back~0 0) (< ~d~0 ~W~0) (< ~n~0 (+ ~back~0 1)) (< |thread1Thread1of1ForFork0_~w~0#1| 1)) (or (< ~back~0 0) (and (= ~back~0 ~front~0) (<= ~d~0 0)) (< ~n~0 (+ ~back~0 1)))), Black: 448#(and (= ~v_assert~0 1) (<= ~d~0 ~W~0)), Black: 416#(and (<= (+ ~d~0 (select (select |#memory_int#1| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) ~W~0) (= ~v_assert~0 1) (<= ~d~0 ~W~0)), Black: 402#(and (= ~v_assert~0 1) (or (< ~back~0 0) (and (= ~back~0 ~front~0) (<= ~d~0 0)) (< ~n~0 (+ ~back~0 1)))), 110#(= (select |#valid| ~queue~0.base) 1), 3#L78true, Black: 164#(and (<= 1 ~v_assert~0) (<= (div ~v_assert~0 256) 0)), 269#(= ~v_assert~0 1), 484#true, Black: 168#(and (<= 1 ~v_assert~0) (= ~d~0 0) (<= (div ~v_assert~0 256) 0) (<= 0 ~W~0)), Black: 173#(= ~back~0 ~front~0), 40#L110-4true, 12#thread1EXITtrue, 35#thread3EXITtrue, 135#(and (<= 0 ~queue~0.offset) (<= (+ (* ~n~0 4) ~queue~0.offset) (select |#length| ~queue~0.base)))]) [2024-11-13 13:01:56,278 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2024-11-13 13:01:56,278 INFO L297 olderBase$Statistics]: existing Event has 31 ancestors and is cut-off event [2024-11-13 13:01:56,278 INFO L297 olderBase$Statistics]: existing Event has 31 ancestors and is cut-off event [2024-11-13 13:01:56,279 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2024-11-13 13:01:56,293 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([453] L48-7-->thread1EXIT: Formula: (and (= |v_thread1Thread1of1ForFork0_#res#1.offset_1| 0) (= |v_thread1Thread1of1ForFork0_#res#1.base_1| 0)) InVars {} OutVars{thread1Thread1of1ForFork0_#res#1.offset=|v_thread1Thread1of1ForFork0_#res#1.offset_1|, thread1Thread1of1ForFork0_~w~0#1=|v_thread1Thread1of1ForFork0_~w~0#1_7|, thread1Thread1of1ForFork0_#res#1.base=|v_thread1Thread1of1ForFork0_#res#1.base_1|} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#res#1.offset, thread1Thread1of1ForFork0_~w~0#1, thread1Thread1of1ForFork0_#res#1.base][113], [32#L111true, Black: 408#(and (= ~v_assert~0 1) (or (< ~back~0 0) (< ~d~0 ~W~0) (< ~n~0 (+ ~back~0 1)) (< |thread1Thread1of1ForFork0_~w~0#1| 1)) (or (< ~back~0 0) (and (= ~back~0 ~front~0) (<= ~d~0 0)) (< ~n~0 (+ ~back~0 1)))), Black: 424#(and (<= (+ ~d~0 (select (select |#memory_int#1| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) ~W~0) (= ~v_assert~0 1) (<= ~d~0 ~W~0) (or (< ~back~0 0) (< ~n~0 (+ ~back~0 1)) (< |thread1Thread1of1ForFork0_~w~0#1| 1) (and (= ~back~0 ~front~0) (<= (+ ~d~0 1) ~W~0)))), Black: 436#(and (= ~d~0 0) (= (select (select |#memory_int#1| ~queue~0.base) 0) 1) (= ~v_assert~0 1) (= ~queue~0.offset 0) (= ~front~0 0) (<= 1 ~W~0) (or (< ~back~0 0) (= ~back~0 0) (< ~n~0 (+ ~back~0 1)) (< |thread1Thread1of1ForFork0_~w~0#1| 1))), Black: 452#(and (<= (+ ~d~0 (select (select |#memory_int#1| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) ~W~0) (<= ~d~0 ~W~0) (or (< ~back~0 0) (< ~n~0 (+ ~back~0 1)) (< |thread1Thread1of1ForFork0_~w~0#1| 1) (and (= ~back~0 ~front~0) (<= (+ ~d~0 1) ~W~0)))), Black: 418#(and (= ~d~0 0) (= (select (select |#memory_int#1| ~queue~0.base) 0) 1) (= ~v_assert~0 1) (or (< ~back~0 1) (< ~n~0 2)) (= ~queue~0.offset 0) (= ~front~0 0) (<= 1 ~W~0)), Black: 428#(and (= ~d~0 0) (= (select (select |#memory_int#1| ~queue~0.base) 0) 1) (= ~v_assert~0 1) (= ~queue~0.offset 0) (= ~front~0 0) (<= 1 ~W~0)), Black: 462#(and (= ~v_assert~0 1) (or (< ~back~0 0) (< ~n~0 (+ ~back~0 1)) (< |thread1Thread1of1ForFork0_~w~0#1| 1) (and (= ~back~0 ~front~0) (<= (+ ~d~0 1) ~W~0)))), Black: 422#(and (= |thread2Thread1of1ForFork1_~temp~0#1| 1) (or (and (= ~queue~0.offset 0) (= ~front~0 0)) (not (= ~back~0 0))) (= ~d~0 0) (= ~v_assert~0 1) (or (< ~back~0 1) (< ~n~0 2)) (<= 1 ~W~0) (or (not (= ~back~0 0)) (< |thread1Thread1of1ForFork0_~w~0#1| (+ ~W~0 1)))), Black: 434#(and (<= ~d~0 1) (= ~v_assert~0 1) (<= 1 ~W~0)), Black: 410#(and (= ~v_assert~0 1) (or (< ~back~0 0) (< ~d~0 ~W~0) (< ~n~0 (+ ~back~0 1))) (or (< ~back~0 0) (and (= ~back~0 ~front~0) (<= ~d~0 0)) (< ~n~0 (+ ~back~0 1)))), Black: 414#(and (= ~d~0 0) (= (select (select |#memory_int#1| ~queue~0.base) 0) 1) (= ~v_assert~0 1) (or (< ~back~0 1) (< ~n~0 2)) (= ~queue~0.offset 0) (= ~front~0 0) (<= 1 ~W~0) (or (not (= ~back~0 0)) (< |thread1Thread1of1ForFork0_~w~0#1| (+ ~W~0 1)))), Black: 432#(and (<= (+ ~d~0 (select (select |#memory_int#1| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) ~W~0) (<= ~d~0 ~W~0)), Black: 154#(and (<= (div |thread2Thread1of1ForFork1_~cond~1#1| 256) 0) (<= 1 |thread2Thread1of1ForFork1_~cond~1#1|)), Black: 156#(and (<= (div |thread2Thread1of1ForFork1_~cond~1#1| 256) 0) (<= 1 |thread2Thread1of1ForFork1_~cond~1#1|) (= ~v_assert~0 1)), Black: 398#(and (<= |ULTIMATE.start_create_fresh_int_array_~i~0#1| 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= ~back~0 ~front~0) (= ~v_assert~0 1) (or (= ~d~0 0) (not (= ~back~0 0))) (<= ~d~0 0) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)), Black: 153#(= ~v_assert~0 1), Black: 404#(and (= ~back~0 ~front~0) (= ~v_assert~0 1) (<= |thread1Thread1of1ForFork0_~w~0#1| ~W~0) (or (= ~d~0 0) (not (= ~back~0 0))) (<= ~d~0 ~W~0) (= ~queue~0.offset 0) (<= ~d~0 0) (<= ~n~0 1)), Black: 420#(and (or (< ~back~0 0) (< ~d~0 ~W~0) (< ~n~0 (+ ~back~0 1)) (< |thread1Thread1of1ForFork0_~w~0#1| 1)) (or (< ~back~0 0) (and (= ~back~0 ~front~0) (<= ~d~0 0)) (< ~n~0 (+ ~back~0 1)))), Black: 448#(and (= ~v_assert~0 1) (<= ~d~0 ~W~0)), Black: 416#(and (<= (+ ~d~0 (select (select |#memory_int#1| ~queue~0.base) (+ (* ~front~0 4) ~queue~0.offset))) ~W~0) (= ~v_assert~0 1) (<= ~d~0 ~W~0)), Black: 402#(and (= ~v_assert~0 1) (or (< ~back~0 0) (and (= ~back~0 ~front~0) (<= ~d~0 0)) (< ~n~0 (+ ~back~0 1)))), 110#(= (select |#valid| ~queue~0.base) 1), 3#L78true, Black: 164#(and (<= 1 ~v_assert~0) (<= (div ~v_assert~0 256) 0)), 269#(= ~v_assert~0 1), Black: 168#(and (<= 1 ~v_assert~0) (= ~d~0 0) (<= (div ~v_assert~0 256) 0) (<= 0 ~W~0)), 484#true, Black: 173#(= ~back~0 ~front~0), 35#thread3EXITtrue, 12#thread1EXITtrue, 135#(and (<= 0 ~queue~0.offset) (<= (+ (* ~n~0 4) ~queue~0.offset) (select |#length| ~queue~0.base)))]) [2024-11-13 13:01:56,293 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2024-11-13 13:01:56,293 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is cut-off event [2024-11-13 13:01:56,293 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is cut-off event [2024-11-13 13:01:56,293 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2024-11-13 13:01:56,322 INFO L124 PetriNetUnfolderBase]: 1871/3500 cut-off events. [2024-11-13 13:01:56,322 INFO L125 PetriNetUnfolderBase]: For 15734/15862 co-relation queries the response was YES. [2024-11-13 13:01:56,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11532 conditions, 3500 events. 1871/3500 cut-off events. For 15734/15862 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 23074 event pairs, 445 based on Foata normal form. 140/3330 useless extension candidates. Maximal degree in co-relation 10046. Up to 1547 conditions per place. [2024-11-13 13:01:56,356 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 43 selfloop transitions, 6 changer transitions 60/133 dead transitions. [2024-11-13 13:01:56,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 133 transitions, 867 flow [2024-11-13 13:01:56,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:01:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 13:01:56,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-11-13 13:01:56,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5410628019323671 [2024-11-13 13:01:56,358 INFO L175 Difference]: Start difference. First operand has 109 places, 100 transitions, 580 flow. Second operand 9 states and 224 transitions. [2024-11-13 13:01:56,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 133 transitions, 867 flow [2024-11-13 13:01:56,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 133 transitions, 819 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-11-13 13:01:56,403 INFO L231 Difference]: Finished difference. Result has 102 places, 67 transitions, 358 flow [2024-11-13 13:01:56,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=358, PETRI_PLACES=102, PETRI_TRANSITIONS=67} [2024-11-13 13:01:56,404 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 54 predicate places. [2024-11-13 13:01:56,404 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 67 transitions, 358 flow [2024-11-13 13:01:56,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.647058823529413) internal successors, (351), 17 states have internal predecessors, (351), 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) [2024-11-13 13:01:56,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:01:56,405 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:56,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 13:01:56,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:56,606 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 13:01:56,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:56,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1907761963, now seen corresponding path program 3 times [2024-11-13 13:01:56,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:56,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726084741] [2024-11-13 13:01:56,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:56,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:56,776 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:01:56,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:56,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726084741] [2024-11-13 13:01:56,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726084741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:01:56,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814610891] [2024-11-13 13:01:56,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:01:56,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:56,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:01:56,780 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:01:56,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:01:56,892 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 13:01:56,892 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:01:56,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:01:56,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:01:56,952 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:01:56,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:01:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:01:57,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814610891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:01:57,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:01:57,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2024-11-13 13:01:57,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741781525] [2024-11-13 13:01:57,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:01:57,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:01:57,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:57,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:01:57,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:01:57,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-11-13 13:01:57,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 67 transitions, 358 flow. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 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) [2024-11-13 13:01:57,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:01:57,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-11-13 13:01:57,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:01:57,987 INFO L124 PetriNetUnfolderBase]: 3093/5681 cut-off events. [2024-11-13 13:01:57,988 INFO L125 PetriNetUnfolderBase]: For 25715/26020 co-relation queries the response was YES. [2024-11-13 13:01:58,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18406 conditions, 5681 events. 3093/5681 cut-off events. For 25715/26020 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 39404 event pairs, 762 based on Foata normal form. 184/5390 useless extension candidates. Maximal degree in co-relation 18358. Up to 1655 conditions per place. [2024-11-13 13:01:58,033 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 89 selfloop transitions, 6 changer transitions 6/125 dead transitions. [2024-11-13 13:01:58,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 125 transitions, 816 flow [2024-11-13 13:01:58,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:01:58,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:01:58,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-11-13 13:01:58,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6793478260869565 [2024-11-13 13:01:58,035 INFO L175 Difference]: Start difference. First operand has 102 places, 67 transitions, 358 flow. Second operand 4 states and 125 transitions. [2024-11-13 13:01:58,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 125 transitions, 816 flow [2024-11-13 13:01:58,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 125 transitions, 761 flow, removed 22 selfloop flow, removed 13 redundant places. [2024-11-13 13:01:58,077 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 380 flow [2024-11-13 13:01:58,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=380, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2024-11-13 13:01:58,078 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 28 predicate places. [2024-11-13 13:01:58,080 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 380 flow [2024-11-13 13:01:58,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 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) [2024-11-13 13:01:58,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:01:58,080 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:58,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:01:58,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 13:01:58,281 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 13:01:58,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:58,282 INFO L85 PathProgramCache]: Analyzing trace with hash -515448517, now seen corresponding path program 4 times [2024-11-13 13:01:58,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:58,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559147931] [2024-11-13 13:01:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:58,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:59,993 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:59,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:59,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559147931] [2024-11-13 13:01:59,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559147931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:01:59,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902714318] [2024-11-13 13:01:59,994 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:01:59,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:59,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:01:59,996 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:01:59,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:02:00,114 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:02:00,115 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:02:00,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 13:02:00,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:02:01,271 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:01,272 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:02:01,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:02:01,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2024-11-13 13:02:02,446 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:02,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902714318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:02:02,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:02:02,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 42 [2024-11-13 13:02:02,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989344998] [2024-11-13 13:02:02,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:02:02,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-13 13:02:02,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:02:02,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-13 13:02:02,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1579, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 13:02:02,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-11-13 13:02:02,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 380 flow. Second operand has 43 states, 43 states have (on average 16.302325581395348) internal successors, (701), 43 states have internal predecessors, (701), 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) [2024-11-13 13:02:02,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:02:02,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-11-13 13:02:02,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:02:19,977 INFO L124 PetriNetUnfolderBase]: 26742/45599 cut-off events. [2024-11-13 13:02:19,978 INFO L125 PetriNetUnfolderBase]: For 91744/92353 co-relation queries the response was YES. [2024-11-13 13:02:20,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141228 conditions, 45599 events. 26742/45599 cut-off events. For 91744/92353 co-relation queries the response was YES. Maximal size of possible extension queue 1311. Compared 380141 event pairs, 2256 based on Foata normal form. 663/44966 useless extension candidates. Maximal degree in co-relation 102600. Up to 6063 conditions per place. [2024-11-13 13:02:20,194 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 641 selfloop transitions, 326 changer transitions 639/1615 dead transitions. [2024-11-13 13:02:20,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 1615 transitions, 10983 flow [2024-11-13 13:02:20,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2024-11-13 13:02:20,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2024-11-13 13:02:20,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 3548 transitions. [2024-11-13 13:02:20,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5008469791078487 [2024-11-13 13:02:20,208 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 380 flow. Second operand 154 states and 3548 transitions. [2024-11-13 13:02:20,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 1615 transitions, 10983 flow [2024-11-13 13:02:20,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 1615 transitions, 10855 flow, removed 64 selfloop flow, removed 0 redundant places. [2024-11-13 13:02:20,701 INFO L231 Difference]: Finished difference. Result has 286 places, 405 transitions, 3938 flow [2024-11-13 13:02:20,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=154, PETRI_FLOW=3938, PETRI_PLACES=286, PETRI_TRANSITIONS=405} [2024-11-13 13:02:20,703 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 238 predicate places. [2024-11-13 13:02:20,704 INFO L471 AbstractCegarLoop]: Abstraction has has 286 places, 405 transitions, 3938 flow [2024-11-13 13:02:20,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 16.302325581395348) internal successors, (701), 43 states have internal predecessors, (701), 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) [2024-11-13 13:02:20,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:02:20,705 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:02:20,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:02:20,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 13:02:20,910 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 13:02:20,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:02:20,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1493447483, now seen corresponding path program 5 times [2024-11-13 13:02:20,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:02:20,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619986227] [2024-11-13 13:02:20,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:02:20,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:02:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:02:22,256 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:22,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:02:22,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619986227] [2024-11-13 13:02:22,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619986227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:02:22,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175729674] [2024-11-13 13:02:22,256 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:02:22,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:02:22,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:02:22,259 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:02:22,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:02:22,367 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-13 13:02:22,367 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:02:22,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 13:02:22,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:02:23,722 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2024-11-13 13:02:23,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 13 [2024-11-13 13:02:23,848 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:23,849 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:02:24,716 INFO L349 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2024-11-13 13:02:24,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 43 [2024-11-13 13:02:25,708 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:02:25,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175729674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:02:25,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:02:25,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 18] total 48 [2024-11-13 13:02:25,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302734045] [2024-11-13 13:02:25,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:02:25,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-13 13:02:25,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:02:25,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-13 13:02:25,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=2030, Unknown=0, NotChecked=0, Total=2352 [2024-11-13 13:02:26,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 46 [2024-11-13 13:02:26,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 405 transitions, 3938 flow. Second operand has 49 states, 49 states have (on average 10.571428571428571) internal successors, (518), 49 states have internal predecessors, (518), 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) [2024-11-13 13:02:26,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:02:26,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 46 [2024-11-13 13:02:26,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:03:21,855 INFO L124 PetriNetUnfolderBase]: 79211/120213 cut-off events. [2024-11-13 13:03:21,855 INFO L125 PetriNetUnfolderBase]: For 998426/998426 co-relation queries the response was YES. [2024-11-13 13:03:23,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523339 conditions, 120213 events. 79211/120213 cut-off events. For 998426/998426 co-relation queries the response was YES. Maximal size of possible extension queue 2050. Compared 889426 event pairs, 8597 based on Foata normal form. 33/115592 useless extension candidates. Maximal degree in co-relation 520293. Up to 19132 conditions per place. [2024-11-13 13:03:23,643 INFO L140 encePairwiseOnDemand]: 24/46 looper letters, 1057 selfloop transitions, 838 changer transitions 1169/3066 dead transitions. [2024-11-13 13:03:23,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 3066 transitions, 30791 flow [2024-11-13 13:03:23,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2024-11-13 13:03:23,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2024-11-13 13:03:23,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 3426 transitions. [2024-11-13 13:03:23,659 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.366887984579139 [2024-11-13 13:03:23,661 INFO L175 Difference]: Start difference. First operand has 286 places, 405 transitions, 3938 flow. Second operand 203 states and 3426 transitions. [2024-11-13 13:03:23,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 3066 transitions, 30791 flow [2024-11-13 13:04:08,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 3066 transitions, 27158 flow, removed 1418 selfloop flow, removed 21 redundant places. [2024-11-13 13:04:08,377 INFO L231 Difference]: Finished difference. Result has 508 places, 1020 transitions, 11783 flow [2024-11-13 13:04:08,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3246, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=203, PETRI_FLOW=11783, PETRI_PLACES=508, PETRI_TRANSITIONS=1020} [2024-11-13 13:04:08,381 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 460 predicate places. [2024-11-13 13:04:08,381 INFO L471 AbstractCegarLoop]: Abstraction has has 508 places, 1020 transitions, 11783 flow [2024-11-13 13:04:08,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 10.571428571428571) internal successors, (518), 49 states have internal predecessors, (518), 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) [2024-11-13 13:04:08,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:04:08,382 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:04:08,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 13:04:08,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 13:04:08,585 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-13 13:04:08,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:04:08,586 INFO L85 PathProgramCache]: Analyzing trace with hash 120871845, now seen corresponding path program 6 times [2024-11-13 13:04:08,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:04:08,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740803730] [2024-11-13 13:04:08,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:04:08,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:04:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:04:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:04:10,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:04:10,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740803730] [2024-11-13 13:04:10,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740803730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:04:10,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337854874] [2024-11-13 13:04:10,206 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:04:10,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:04:10,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:04:10,209 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:04:10,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d8f07e9-d676-457c-85d1-1fe1648130a7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:04:10,353 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-13 13:04:10,353 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:04:10,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 13:04:10,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:04:11,667 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2024-11-13 13:04:11,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 13 [2024-11-13 13:04:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:04:11,798 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:04:12,541 INFO L349 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2024-11-13 13:04:12,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 43 [2024-11-13 13:04:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:04:13,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337854874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:04:13,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:04:13,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 46 [2024-11-13 13:04:13,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304159949] [2024-11-13 13:04:13,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:04:13,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 13:04:13,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:04:13,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 13:04:13,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1872, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 13:04:14,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-11-13 13:04:14,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 1020 transitions, 11783 flow. Second operand has 47 states, 47 states have (on average 13.446808510638299) internal successors, (632), 47 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:04:14,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:04:14,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-11-13 13:04:14,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand