./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/fib_safe-10.i --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_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/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_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/fib_safe-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/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_cda64780-4e81-4a46-8760-f7bf5f20f1f9/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 4d0c5b9355e30d5caa4f24695b56ab4fa8d9d282078ca8b4e24a8f9b8920e450 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:57:18,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:57:18,559 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 13:57:18,566 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:57:18,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:57:18,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:57:18,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:57:18,597 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:57:18,598 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:57:18,598 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:57:18,598 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:57:18,598 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:57:18,599 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:57:18,599 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:57:18,599 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:57:18,599 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:57:18,600 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:57:18,600 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:57:18,600 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:57:18,600 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:57:18,600 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 13:57:18,600 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 13:57:18,601 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 13:57:18,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:57:18,601 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 13:57:18,601 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:57:18,601 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:57:18,601 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:57:18,602 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:57:18,602 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:57:18,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:57:18,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:57:18,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:57:18,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:57:18,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:57:18,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:57:18,603 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:57:18,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:57:18,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:57:18,604 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:57:18,604 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:57:18,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:57:18,604 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_cda64780-4e81-4a46-8760-f7bf5f20f1f9/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 -> 4d0c5b9355e30d5caa4f24695b56ab4fa8d9d282078ca8b4e24a8f9b8920e450 [2024-11-13 13:57:18,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:57:18,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:57:18,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:57:18,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:57:18,948 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:57:18,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread/fib_safe-10.i Unable to find full path for "g++" [2024-11-13 13:57:21,073 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:57:21,466 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:57:21,469 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/sv-benchmarks/c/pthread/fib_safe-10.i [2024-11-13 13:57:21,496 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/data/b2ba9831e/4c635baa0ed34079b5fc56142471c080/FLAG6034092ad [2024-11-13 13:57:21,522 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/data/b2ba9831e/4c635baa0ed34079b5fc56142471c080 [2024-11-13 13:57:21,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:57:21,527 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:57:21,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:57:21,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:57:21,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:57:21,537 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:57:21" (1/1) ... [2024-11-13 13:57:21,539 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5977e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:57:21, skipping insertion in model container [2024-11-13 13:57:21,541 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:57:21" (1/1) ... [2024-11-13 13:57:21,592 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:57:22,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:57:22,021 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:57:22,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:57:22,174 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:57:22,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:57:22 WrapperNode [2024-11-13 13:57:22,175 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:57:22,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:57:22,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:57:22,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:57:22,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:57:22" (1/1) ... [2024-11-13 13:57:22,204 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:57:22" (1/1) ... [2024-11-13 13:57:22,239 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2024-11-13 13:57:22,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:57:22,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:57:22,242 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:57:22,242 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:57:22,253 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:57:22" (1/1) ... [2024-11-13 13:57:22,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:57:22" (1/1) ... [2024-11-13 13:57:22,256 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:57:22" (1/1) ... [2024-11-13 13:57:22,280 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 13:57:22,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:57:22" (1/1) ... [2024-11-13 13:57:22,283 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:57:22" (1/1) ... [2024-11-13 13:57:22,294 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:57:22" (1/1) ... [2024-11-13 13:57:22,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:57:22" (1/1) ... [2024-11-13 13:57:22,303 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:57:22" (1/1) ... [2024-11-13 13:57:22,308 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:57:22" (1/1) ... [2024-11-13 13:57:22,311 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:57:22,312 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:57:22,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:57:22,316 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:57:22,317 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:57:22" (1/1) ... [2024-11-13 13:57:22,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:57:22,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:57:22,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:57:22,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:57:22,409 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-13 13:57:22,409 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-13 13:57:22,409 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-13 13:57:22,409 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-13 13:57:22,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 13:57:22,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:57:22,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:57:22,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 13:57:22,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:57:22,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:57:22,416 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 13:57:22,575 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:57:22,577 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:57:22,801 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:57:22,801 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:57:22,964 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:57:22,964 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 13:57:22,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:57:22 BoogieIcfgContainer [2024-11-13 13:57:22,965 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:57:22,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:57:22,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:57:22,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:57:22,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:57:21" (1/3) ... [2024-11-13 13:57:22,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af0b696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:57:22, skipping insertion in model container [2024-11-13 13:57:22,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:57:22" (2/3) ... [2024-11-13 13:57:22,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af0b696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:57:22, skipping insertion in model container [2024-11-13 13:57:22,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:57:22" (3/3) ... [2024-11-13 13:57:22,976 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-10.i [2024-11-13 13:57:22,994 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:57:23,000 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_safe-10.i that has 3 procedures, 30 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2024-11-13 13:57:23,000 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:57:23,056 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:57:23,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 76 flow [2024-11-13 13:57:23,150 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2024-11-13 13:57:23,152 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:57:23,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 32 events. 5/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2024-11-13 13:57:23,157 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 34 transitions, 76 flow [2024-11-13 13:57:23,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 32 transitions, 70 flow [2024-11-13 13:57:23,169 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:57:23,184 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;@1fd8b124, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:57:23,184 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-13 13:57:23,220 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:57:23,224 INFO L124 PetriNetUnfolderBase]: 5/29 cut-off events. [2024-11-13 13:57:23,224 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:57:23,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:57:23,225 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:57:23,225 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:57:23,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:57:23,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1701385968, now seen corresponding path program 1 times [2024-11-13 13:57:23,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:57:23,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568696223] [2024-11-13 13:57:23,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:23,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:57:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:23,552 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 13:57:23,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:57:23,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568696223] [2024-11-13 13:57:23,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568696223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:57:23,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:57:23,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:57:23,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14956706] [2024-11-13 13:57:23,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:57:23,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:57:23,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:57:23,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:57:23,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:57:23,603 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-11-13 13:57:23,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:23,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:57:23,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-11-13 13:57:23,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:57:23,839 INFO L124 PetriNetUnfolderBase]: 151/292 cut-off events. [2024-11-13 13:57:23,839 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 13:57:23,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 292 events. 151/292 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 993 event pairs, 20 based on Foata normal form. 18/296 useless extension candidates. Maximal degree in co-relation 521. Up to 172 conditions per place. [2024-11-13 13:57:23,845 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 22 selfloop transitions, 2 changer transitions 1/36 dead transitions. [2024-11-13 13:57:23,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 128 flow [2024-11-13 13:57:23,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:57:23,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:57:23,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-11-13 13:57:23,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-11-13 13:57:23,863 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 70 flow. Second operand 3 states and 67 transitions. [2024-11-13 13:57:23,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 128 flow [2024-11-13 13:57:23,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:57:23,872 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 72 flow [2024-11-13 13:57:23,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2024-11-13 13:57:23,884 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2024-11-13 13:57:23,885 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 72 flow [2024-11-13 13:57:23,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:57:23,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:57:23,885 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:57:23,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:57:23,886 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:57:23,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:57:23,886 INFO L85 PathProgramCache]: Analyzing trace with hash 421067935, now seen corresponding path program 1 times [2024-11-13 13:57:23,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:57:23,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414759675] [2024-11-13 13:57:23,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:23,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:57:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:24,077 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 13:57:24,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:57:24,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414759675] [2024-11-13 13:57:24,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414759675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:57:24,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543469780] [2024-11-13 13:57:24,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:24,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:24,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:57:24,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:57:24,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:57:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:24,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:57:24,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:57:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:57:24,298 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:57:24,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543469780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:57:24,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:57:24,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-13 13:57:24,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12852544] [2024-11-13 13:57:24,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:57:24,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:57:24,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:57:24,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:57:24,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:57:24,301 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2024-11-13 13:57:24,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 13:57:24,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:57:24,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2024-11-13 13:57:24,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:57:24,445 INFO L124 PetriNetUnfolderBase]: 133/256 cut-off events. [2024-11-13 13:57:24,445 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-13 13:57:24,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 256 events. 133/256 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 816 event pairs, 80 based on Foata normal form. 9/248 useless extension candidates. Maximal degree in co-relation 494. Up to 204 conditions per place. [2024-11-13 13:57:24,448 INFO L140 encePairwiseOnDemand]: 32/34 looper letters, 16 selfloop transitions, 1 changer transitions 1/28 dead transitions. [2024-11-13 13:57:24,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 106 flow [2024-11-13 13:57:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:57:24,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:57:24,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-11-13 13:57:24,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-11-13 13:57:24,454 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 72 flow. Second operand 3 states and 54 transitions. [2024-11-13 13:57:24,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 106 flow [2024-11-13 13:57:24,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:57:24,456 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 68 flow [2024-11-13 13:57:24,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-11-13 13:57:24,459 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2024-11-13 13:57:24,459 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 68 flow [2024-11-13 13:57:24,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 13:57:24,459 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:57:24,460 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:57:24,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:57:24,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:24,661 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:57:24,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:57:24,661 INFO L85 PathProgramCache]: Analyzing trace with hash 421069042, now seen corresponding path program 1 times [2024-11-13 13:57:24,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:57:24,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085699815] [2024-11-13 13:57:24,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:24,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:57:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:24,754 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 13:57:24,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:57:24,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085699815] [2024-11-13 13:57:24,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085699815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:57:24,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338132271] [2024-11-13 13:57:24,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:24,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:24,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:57:24,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:57:24,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:57:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:24,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:57:24,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:57:24,913 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 13:57:24,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:57:24,952 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 13:57:24,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338132271] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:57:24,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:57:24,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-13 13:57:24,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318071970] [2024-11-13 13:57:24,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:57:24,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:57:24,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:57:24,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:57:24,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:57:24,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-11-13 13:57:24,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 68 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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 13:57:24,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:57:24,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-11-13 13:57:24,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:57:25,171 INFO L124 PetriNetUnfolderBase]: 169/310 cut-off events. [2024-11-13 13:57:25,171 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-13 13:57:25,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 310 events. 169/310 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 926 event pairs, 20 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 628. Up to 118 conditions per place. [2024-11-13 13:57:25,176 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 39 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-11-13 13:57:25,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 216 flow [2024-11-13 13:57:25,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:57:25,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:57:25,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-11-13 13:57:25,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6127450980392157 [2024-11-13 13:57:25,179 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 68 flow. Second operand 6 states and 125 transitions. [2024-11-13 13:57:25,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 216 flow [2024-11-13 13:57:25,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 54 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:57:25,181 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 103 flow [2024-11-13 13:57:25,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2024-11-13 13:57:25,184 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2024-11-13 13:57:25,184 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 103 flow [2024-11-13 13:57:25,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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 13:57:25,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:57:25,185 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:57:25,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:57:25,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:25,389 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:57:25,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:57:25,391 INFO L85 PathProgramCache]: Analyzing trace with hash -989032701, now seen corresponding path program 2 times [2024-11-13 13:57:25,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:57:25,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544484648] [2024-11-13 13:57:25,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:25,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:57:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:25,595 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:25,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:57:25,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544484648] [2024-11-13 13:57:25,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544484648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:57:25,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260711350] [2024-11-13 13:57:25,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:57:25,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:25,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:57:25,598 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:57:25,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:57:25,704 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:57:25,704 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:57:25,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:57:25,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:57:25,736 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:25,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:57:25,834 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:25,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260711350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:57:25,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:57:25,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-13 13:57:25,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973454341] [2024-11-13 13:57:25,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:57:25,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 13:57:25,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:57:25,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 13:57:25,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:57:25,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-11-13 13:57:25,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 103 flow. Second operand has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 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 13:57:25,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:57:25,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-11-13 13:57:25,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:57:26,115 INFO L124 PetriNetUnfolderBase]: 277/472 cut-off events. [2024-11-13 13:57:26,115 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-11-13 13:57:26,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1171 conditions, 472 events. 277/472 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1325 event pairs, 20 based on Foata normal form. 54/524 useless extension candidates. Maximal degree in co-relation 1159. Up to 118 conditions per place. [2024-11-13 13:57:26,121 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 75 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2024-11-13 13:57:26,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 96 transitions, 431 flow [2024-11-13 13:57:26,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 13:57:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 13:57:26,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 248 transitions. [2024-11-13 13:57:26,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-11-13 13:57:26,125 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 103 flow. Second operand 12 states and 248 transitions. [2024-11-13 13:57:26,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 96 transitions, 431 flow [2024-11-13 13:57:26,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 96 transitions, 417 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-13 13:57:26,130 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 173 flow [2024-11-13 13:57:26,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=173, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2024-11-13 13:57:26,132 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2024-11-13 13:57:26,132 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 173 flow [2024-11-13 13:57:26,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 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 13:57:26,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:57:26,133 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:57:26,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:57:26,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:26,337 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:57:26,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:57:26,338 INFO L85 PathProgramCache]: Analyzing trace with hash -760678237, now seen corresponding path program 3 times [2024-11-13 13:57:26,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:57:26,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419798106] [2024-11-13 13:57:26,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:26,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:57:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:26,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:57:26,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419798106] [2024-11-13 13:57:26,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419798106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:57:26,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788773094] [2024-11-13 13:57:26,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:57:26,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:26,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:57:26,731 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:57:26,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:57:26,844 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-13 13:57:26,844 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:57:26,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 13:57:26,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:57:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:26,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:57:27,277 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:27,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788773094] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:57:27,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:57:27,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-13 13:57:27,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254578959] [2024-11-13 13:57:27,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:57:27,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 13:57:27,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:57:27,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 13:57:27,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-13 13:57:27,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-11-13 13:57:27,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 173 flow. Second operand has 25 states, 25 states have (on average 14.32) internal successors, (358), 25 states have internal predecessors, (358), 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 13:57:27,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:57:27,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-11-13 13:57:27,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:57:27,860 INFO L124 PetriNetUnfolderBase]: 493/796 cut-off events. [2024-11-13 13:57:27,860 INFO L125 PetriNetUnfolderBase]: For 4212/4212 co-relation queries the response was YES. [2024-11-13 13:57:27,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2303 conditions, 796 events. 493/796 cut-off events. For 4212/4212 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2126 event pairs, 20 based on Foata normal form. 108/902 useless extension candidates. Maximal degree in co-relation 2284. Up to 190 conditions per place. [2024-11-13 13:57:27,874 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 147 selfloop transitions, 23 changer transitions 0/180 dead transitions. [2024-11-13 13:57:27,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 180 transitions, 873 flow [2024-11-13 13:57:27,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 13:57:27,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-13 13:57:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 494 transitions. [2024-11-13 13:57:27,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6053921568627451 [2024-11-13 13:57:27,884 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 173 flow. Second operand 24 states and 494 transitions. [2024-11-13 13:57:27,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 180 transitions, 873 flow [2024-11-13 13:57:27,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 180 transitions, 801 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-11-13 13:57:27,903 INFO L231 Difference]: Finished difference. Result has 85 places, 48 transitions, 293 flow [2024-11-13 13:57:27,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=293, PETRI_PLACES=85, PETRI_TRANSITIONS=48} [2024-11-13 13:57:27,905 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 51 predicate places. [2024-11-13 13:57:27,906 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 48 transitions, 293 flow [2024-11-13 13:57:27,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.32) internal successors, (358), 25 states have internal predecessors, (358), 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 13:57:27,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:57:27,907 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:57:27,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 13:57:28,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:28,112 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:57:28,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:57:28,113 INFO L85 PathProgramCache]: Analyzing trace with hash 211985379, now seen corresponding path program 4 times [2024-11-13 13:57:28,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:57:28,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705280850] [2024-11-13 13:57:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:57:28,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:57:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:57:31,305 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:31,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:57:31,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705280850] [2024-11-13 13:57:31,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705280850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:57:31,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318315619] [2024-11-13 13:57:31,306 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:57:31,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:57:31,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:57:31,309 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:57:31,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:57:31,431 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:57:31,431 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:57:31,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-13 13:57:31,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:57:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 210 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:33,834 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:57:36,575 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:57:36,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318315619] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:57:36,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:57:36,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 84 [2024-11-13 13:57:36,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798619675] [2024-11-13 13:57:36,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:57:36,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-13 13:57:36,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:57:36,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-13 13:57:36,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1017, Invalid=6123, Unknown=0, NotChecked=0, Total=7140 [2024-11-13 13:57:37,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-11-13 13:57:37,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 48 transitions, 293 flow. Second operand has 85 states, 85 states have (on average 8.2) internal successors, (697), 85 states have internal predecessors, (697), 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 13:57:37,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:57:37,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-11-13 13:57:37,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:58:40,979 INFO L124 PetriNetUnfolderBase]: 31774/51782 cut-off events. [2024-11-13 13:58:40,979 INFO L125 PetriNetUnfolderBase]: For 172203/172203 co-relation queries the response was YES. [2024-11-13 13:58:41,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148250 conditions, 51782 events. 31774/51782 cut-off events. For 172203/172203 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 350871 event pairs, 70 based on Foata normal form. 0/51289 useless extension candidates. Maximal degree in co-relation 148219. Up to 7735 conditions per place. [2024-11-13 13:58:41,579 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 880 selfloop transitions, 1265 changer transitions 1053/3202 dead transitions. [2024-11-13 13:58:41,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 3202 transitions, 22122 flow [2024-11-13 13:58:41,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 265 states. [2024-11-13 13:58:41,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2024-11-13 13:58:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 4078 transitions. [2024-11-13 13:58:41,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45260821309655935 [2024-11-13 13:58:41,594 INFO L175 Difference]: Start difference. First operand has 85 places, 48 transitions, 293 flow. Second operand 265 states and 4078 transitions. [2024-11-13 13:58:41,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 3202 transitions, 22122 flow [2024-11-13 13:58:42,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 3202 transitions, 17444 flow, removed 1850 selfloop flow, removed 11 redundant places. [2024-11-13 13:58:42,268 INFO L231 Difference]: Finished difference. Result has 440 places, 1399 transitions, 8463 flow [2024-11-13 13:58:42,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=265, PETRI_FLOW=8463, PETRI_PLACES=440, PETRI_TRANSITIONS=1399} [2024-11-13 13:58:42,269 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 406 predicate places. [2024-11-13 13:58:42,269 INFO L471 AbstractCegarLoop]: Abstraction has has 440 places, 1399 transitions, 8463 flow [2024-11-13 13:58:42,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 8.2) internal successors, (697), 85 states have internal predecessors, (697), 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 13:58:42,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:58:42,270 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:58:42,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:58:42,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 13:58:42,475 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:58:42,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:58:42,476 INFO L85 PathProgramCache]: Analyzing trace with hash -585460129, now seen corresponding path program 1 times [2024-11-13 13:58:42,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:58:42,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461111909] [2024-11-13 13:58:42,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:58:42,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:58:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:58:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:58:45,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:58:45,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461111909] [2024-11-13 13:58:45,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461111909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:58:45,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650752991] [2024-11-13 13:58:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:58:45,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:58:45,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:58:45,144 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:58:45,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda64780-4e81-4a46-8760-f7bf5f20f1f9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:58:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:58:45,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-13 13:58:45,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:58:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 210 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:58:47,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:58:50,203 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:58:50,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650752991] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:58:50,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:58:50,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 91 [2024-11-13 13:58:50,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034818418] [2024-11-13 13:58:50,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:58:50,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-11-13 13:58:50,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:58:50,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-11-13 13:58:50,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1077, Invalid=7295, Unknown=0, NotChecked=0, Total=8372 [2024-11-13 13:58:50,371 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-11-13 13:58:50,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 1399 transitions, 8463 flow. Second operand has 92 states, 92 states have (on average 8.23913043478261) internal successors, (758), 92 states have internal predecessors, (758), 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 13:58:50,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:58:50,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-11-13 13:58:50,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand