./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/fib_safe-11.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_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/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_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/fib_safe-11.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/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_b78d4773-d361-4792-b1b8-2f834deb372a/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 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:38:42,124 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:38:42,180 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 14:38:42,185 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:38:42,185 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:38:42,215 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:38:42,216 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:38:42,216 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:38:42,219 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:38:42,219 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:38:42,220 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:38:42,220 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:38:42,221 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:38:42,221 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:38:42,221 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:38:42,221 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:38:42,221 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:38:42,221 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:38:42,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:38:42,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:38:42,222 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:38:42,222 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:38:42,222 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:38:42,222 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:38:42,222 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:38:42,222 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:38:42,222 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:38:42,222 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:38:42,222 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:38:42,223 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:38:42,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:38:42,223 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:38:42,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:38:42,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:38:42,224 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:38:42,224 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:38:42,224 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:38:42,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:38:42,224 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:38:42,224 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:38:42,224 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:38:42,224 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:38:42,224 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_b78d4773-d361-4792-b1b8-2f834deb372a/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 -> 67ab3b79be699544cc101a76da66f98a1e0e6116d5865ddc6f998abd49388964 [2024-11-13 14:38:42,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:38:42,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:38:42,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:38:42,545 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:38:42,545 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:38:42,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread/fib_safe-11.i Unable to find full path for "g++" [2024-11-13 14:38:44,454 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:38:44,787 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:38:44,788 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/sv-benchmarks/c/pthread/fib_safe-11.i [2024-11-13 14:38:44,801 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/data/f76d7acf0/a25ef8559ac5405a8c9e2828b3df40d5/FLAGdac4de010 [2024-11-13 14:38:45,021 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/data/f76d7acf0/a25ef8559ac5405a8c9e2828b3df40d5 [2024-11-13 14:38:45,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:38:45,025 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:38:45,026 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:38:45,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:38:45,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:38:45,032 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:38:45" (1/1) ... [2024-11-13 14:38:45,033 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@475140e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:45, skipping insertion in model container [2024-11-13 14:38:45,033 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:38:45" (1/1) ... [2024-11-13 14:38:45,065 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:38:45,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:38:45,408 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:38:45,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:38:45,492 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:38:45,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:45 WrapperNode [2024-11-13 14:38:45,493 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:38:45,495 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:38:45,495 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:38:45,495 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:38:45,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:45" (1/1) ... [2024-11-13 14:38:45,522 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:45" (1/1) ... [2024-11-13 14:38:45,547 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2024-11-13 14:38:45,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:38:45,549 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:38:45,550 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:38:45,550 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:38:45,560 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:45" (1/1) ... [2024-11-13 14:38:45,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:45" (1/1) ... [2024-11-13 14:38:45,565 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:45" (1/1) ... [2024-11-13 14:38:45,585 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 14:38:45,585 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:45" (1/1) ... [2024-11-13 14:38:45,585 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:45" (1/1) ... [2024-11-13 14:38:45,593 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:45" (1/1) ... [2024-11-13 14:38:45,600 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:45" (1/1) ... [2024-11-13 14:38:45,603 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:45" (1/1) ... [2024-11-13 14:38:45,604 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:45" (1/1) ... [2024-11-13 14:38:45,610 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:38:45,610 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:38:45,611 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:38:45,611 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:38:45,612 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:45" (1/1) ... [2024-11-13 14:38:45,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:38:45,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:38:45,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:38:45,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:38:45,685 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-13 14:38:45,686 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-13 14:38:45,686 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-13 14:38:45,686 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-13 14:38:45,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 14:38:45,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:38:45,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:38:45,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 14:38:45,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:38:45,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:38:45,687 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 14:38:45,824 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:38:45,825 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:38:46,035 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:38:46,035 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:38:46,183 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:38:46,183 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 14:38:46,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:38:46 BoogieIcfgContainer [2024-11-13 14:38:46,183 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:38:46,187 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:38:46,187 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:38:46,194 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:38:46,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:38:45" (1/3) ... [2024-11-13 14:38:46,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652a7cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:38:46, skipping insertion in model container [2024-11-13 14:38:46,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:45" (2/3) ... [2024-11-13 14:38:46,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652a7cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:38:46, skipping insertion in model container [2024-11-13 14:38:46,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:38:46" (3/3) ... [2024-11-13 14:38:46,198 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-11.i [2024-11-13 14:38:46,213 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:38:46,214 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_safe-11.i that has 3 procedures, 30 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2024-11-13 14:38:46,214 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:38:46,267 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:38:46,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 76 flow [2024-11-13 14:38:46,355 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2024-11-13 14:38:46,358 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:38:46,363 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 14:38:46,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 34 transitions, 76 flow [2024-11-13 14:38:46,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 32 transitions, 70 flow [2024-11-13 14:38:46,378 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:38:46,420 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;@1cb019, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:38:46,420 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-13 14:38:46,443 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:38:46,443 INFO L124 PetriNetUnfolderBase]: 5/29 cut-off events. [2024-11-13 14:38:46,444 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:38:46,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:38:46,445 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:38:46,445 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 14:38:46,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:38:46,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1701385968, now seen corresponding path program 1 times [2024-11-13 14:38:46,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:38:46,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610207999] [2024-11-13 14:38:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:38:46,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:38:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:38:46,742 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 14:38:46,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:38:46,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610207999] [2024-11-13 14:38:46,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610207999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:38:46,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:38:46,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:38:46,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852434375] [2024-11-13 14:38:46,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:38:46,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:38:46,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:38:46,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:38:46,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:38:46,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-11-13 14:38:46,794 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 14:38:46,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:38:46,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-11-13 14:38:46,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:38:46,989 INFO L124 PetriNetUnfolderBase]: 151/292 cut-off events. [2024-11-13 14:38:46,990 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 14:38:46,993 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 14:38:46,997 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 22 selfloop transitions, 2 changer transitions 1/36 dead transitions. [2024-11-13 14:38:47,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 128 flow [2024-11-13 14:38:47,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:38:47,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:38:47,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-11-13 14:38:47,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-11-13 14:38:47,021 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 70 flow. Second operand 3 states and 67 transitions. [2024-11-13 14:38:47,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 128 flow [2024-11-13 14:38:47,025 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 14:38:47,031 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 72 flow [2024-11-13 14:38:47,033 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 14:38:47,037 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2024-11-13 14:38:47,037 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 72 flow [2024-11-13 14:38:47,037 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 14:38:47,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:38:47,038 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:38:47,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:38:47,038 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 14:38:47,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:38:47,039 INFO L85 PathProgramCache]: Analyzing trace with hash 421067935, now seen corresponding path program 1 times [2024-11-13 14:38:47,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:38:47,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429126541] [2024-11-13 14:38:47,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:38:47,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:38:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:38:47,198 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 14:38:47,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:38:47,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429126541] [2024-11-13 14:38:47,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429126541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:38:47,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253003764] [2024-11-13 14:38:47,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:38:47,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:38:47,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:38:47,202 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:38:47,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:38:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:38:47,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:38:47,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:38:47,358 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 14:38:47,358 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:38:47,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253003764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:38:47,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:38:47,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-13 14:38:47,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313861315] [2024-11-13 14:38:47,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:38:47,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:38:47,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:38:47,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:38:47,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:38:47,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2024-11-13 14:38:47,362 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 14:38:47,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:38:47,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2024-11-13 14:38:47,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:38:47,448 INFO L124 PetriNetUnfolderBase]: 133/256 cut-off events. [2024-11-13 14:38:47,448 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-13 14:38:47,449 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 14:38:47,457 INFO L140 encePairwiseOnDemand]: 32/34 looper letters, 16 selfloop transitions, 1 changer transitions 1/28 dead transitions. [2024-11-13 14:38:47,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 106 flow [2024-11-13 14:38:47,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:38:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:38:47,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-11-13 14:38:47,459 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-11-13 14:38:47,459 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 72 flow. Second operand 3 states and 54 transitions. [2024-11-13 14:38:47,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 106 flow [2024-11-13 14:38:47,460 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 14:38:47,460 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 68 flow [2024-11-13 14:38:47,461 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 14:38:47,461 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2024-11-13 14:38:47,462 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 68 flow [2024-11-13 14:38:47,465 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 14:38:47,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:38:47,465 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:38:47,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:38:47,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:38:47,666 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 14:38:47,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:38:47,667 INFO L85 PathProgramCache]: Analyzing trace with hash 421069042, now seen corresponding path program 1 times [2024-11-13 14:38:47,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:38:47,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34567532] [2024-11-13 14:38:47,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:38:47,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:38:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:38:47,748 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 14:38:47,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:38:47,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34567532] [2024-11-13 14:38:47,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34567532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:38:47,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310866974] [2024-11-13 14:38:47,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:38:47,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:38:47,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:38:47,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:38:47,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:38:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:38:47,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:38:47,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:38:47,926 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 14:38:47,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:38:47,955 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 14:38:47,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310866974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:38:47,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:38:47,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-13 14:38:47,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536600240] [2024-11-13 14:38:47,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:38:47,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:38:47,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:38:47,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:38:47,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:38:47,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-11-13 14:38:47,959 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 14:38:47,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:38:47,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-11-13 14:38:47,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:38:48,123 INFO L124 PetriNetUnfolderBase]: 169/310 cut-off events. [2024-11-13 14:38:48,124 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-13 14:38:48,126 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 14:38:48,130 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 39 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-11-13 14:38:48,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 216 flow [2024-11-13 14:38:48,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:38:48,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 14:38:48,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-11-13 14:38:48,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6127450980392157 [2024-11-13 14:38:48,136 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 68 flow. Second operand 6 states and 125 transitions. [2024-11-13 14:38:48,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 216 flow [2024-11-13 14:38:48,137 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 14:38:48,138 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 103 flow [2024-11-13 14:38:48,141 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 14:38:48,142 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2024-11-13 14:38:48,142 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 103 flow [2024-11-13 14:38:48,142 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 14:38:48,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:38:48,142 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:38:48,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:38:48,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:38:48,343 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 14:38:48,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:38:48,345 INFO L85 PathProgramCache]: Analyzing trace with hash -989032701, now seen corresponding path program 2 times [2024-11-13 14:38:48,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:38:48,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322475697] [2024-11-13 14:38:48,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:38:48,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:38:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:38:48,575 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 14:38:48,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:38:48,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322475697] [2024-11-13 14:38:48,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322475697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:38:48,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587055375] [2024-11-13 14:38:48,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:38:48,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:38:48,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:38:48,578 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:38:48,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:38:48,666 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:38:48,667 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:38:48,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:38:48,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:38:48,693 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 14:38:48,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:38:48,783 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 14:38:48,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587055375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:38:48,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:38:48,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-13 14:38:48,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309717458] [2024-11-13 14:38:48,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:38:48,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 14:38:48,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:38:48,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 14:38:48,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:38:48,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-11-13 14:38:48,791 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 14:38:48,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:38:48,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-11-13 14:38:48,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:38:49,058 INFO L124 PetriNetUnfolderBase]: 277/472 cut-off events. [2024-11-13 14:38:49,058 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-11-13 14:38:49,060 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 14:38:49,064 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 75 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2024-11-13 14:38:49,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 96 transitions, 431 flow [2024-11-13 14:38:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:38:49,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 14:38:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 248 transitions. [2024-11-13 14:38:49,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-11-13 14:38:49,066 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 103 flow. Second operand 12 states and 248 transitions. [2024-11-13 14:38:49,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 96 transitions, 431 flow [2024-11-13 14:38:49,072 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 14:38:49,074 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 173 flow [2024-11-13 14:38:49,074 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 14:38:49,075 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2024-11-13 14:38:49,075 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 173 flow [2024-11-13 14:38:49,077 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 14:38:49,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:38:49,078 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:38:49,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:38:49,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:38:49,282 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 14:38:49,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:38:49,283 INFO L85 PathProgramCache]: Analyzing trace with hash -760678237, now seen corresponding path program 3 times [2024-11-13 14:38:49,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:38:49,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590474538] [2024-11-13 14:38:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:38:49,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:38:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:38:49,571 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 14:38:49,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:38:49,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590474538] [2024-11-13 14:38:49,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590474538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:38:49,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096503097] [2024-11-13 14:38:49,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:38:49,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:38:49,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:38:49,575 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:38:49,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:38:49,687 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-13 14:38:49,687 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:38:49,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 14:38:49,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:38:49,737 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 14:38:49,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:38:50,060 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 14:38:50,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096503097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:38:50,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:38:50,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-13 14:38:50,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343081387] [2024-11-13 14:38:50,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:38:50,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 14:38:50,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:38:50,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 14:38:50,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-13 14:38:50,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-11-13 14:38:50,068 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 14:38:50,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:38:50,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-11-13 14:38:50,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:38:50,568 INFO L124 PetriNetUnfolderBase]: 493/796 cut-off events. [2024-11-13 14:38:50,572 INFO L125 PetriNetUnfolderBase]: For 4212/4212 co-relation queries the response was YES. [2024-11-13 14:38:50,575 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 14:38:50,579 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 147 selfloop transitions, 23 changer transitions 0/180 dead transitions. [2024-11-13 14:38:50,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 180 transitions, 873 flow [2024-11-13 14:38:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 14:38:50,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-13 14:38:50,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 494 transitions. [2024-11-13 14:38:50,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6053921568627451 [2024-11-13 14:38:50,585 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 173 flow. Second operand 24 states and 494 transitions. [2024-11-13 14:38:50,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 180 transitions, 873 flow [2024-11-13 14:38:50,593 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 14:38:50,595 INFO L231 Difference]: Finished difference. Result has 85 places, 48 transitions, 293 flow [2024-11-13 14:38:50,596 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 14:38:50,596 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 51 predicate places. [2024-11-13 14:38:50,596 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 48 transitions, 293 flow [2024-11-13 14:38:50,597 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 14:38:50,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:38:50,597 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:38:50,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 14:38:50,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:38:50,802 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 14:38:50,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:38:50,802 INFO L85 PathProgramCache]: Analyzing trace with hash 211985379, now seen corresponding path program 4 times [2024-11-13 14:38:50,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:38:50,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035424074] [2024-11-13 14:38:50,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:38:50,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:38:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:38:51,540 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 14:38:51,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:38:51,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035424074] [2024-11-13 14:38:51,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035424074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:38:51,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435461245] [2024-11-13 14:38:51,541 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:38:51,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:38:51,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:38:51,545 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:38:51,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:38:51,659 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:38:51,659 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:38:51,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 14:38:51,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:38:51,738 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 14:38:51,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:38:52,157 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 14:38:52,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435461245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:38:52,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:38:52,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 27 [2024-11-13 14:38:52,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968534747] [2024-11-13 14:38:52,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:38:52,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 14:38:52,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:38:52,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 14:38:52,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2024-11-13 14:38:52,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-11-13 14:38:52,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 48 transitions, 293 flow. Second operand has 27 states, 27 states have (on average 14.333333333333334) internal successors, (387), 27 states have internal predecessors, (387), 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 14:38:52,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:38:52,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-11-13 14:38:52,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:38:52,633 INFO L124 PetriNetUnfolderBase]: 529/850 cut-off events. [2024-11-13 14:38:52,634 INFO L125 PetriNetUnfolderBase]: For 5562/5562 co-relation queries the response was YES. [2024-11-13 14:38:52,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2585 conditions, 850 events. 529/850 cut-off events. For 5562/5562 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2256 event pairs, 20 based on Foata normal form. 18/866 useless extension candidates. Maximal degree in co-relation 2554. Up to 178 conditions per place. [2024-11-13 14:38:52,641 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 159 selfloop transitions, 25 changer transitions 0/194 dead transitions. [2024-11-13 14:38:52,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 194 transitions, 965 flow [2024-11-13 14:38:52,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 14:38:52,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-13 14:38:52,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 524 transitions. [2024-11-13 14:38:52,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5927601809954751 [2024-11-13 14:38:52,644 INFO L175 Difference]: Start difference. First operand has 85 places, 48 transitions, 293 flow. Second operand 26 states and 524 transitions. [2024-11-13 14:38:52,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 194 transitions, 965 flow [2024-11-13 14:38:52,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 194 transitions, 865 flow, removed 39 selfloop flow, removed 11 redundant places. [2024-11-13 14:38:52,662 INFO L231 Difference]: Finished difference. Result has 101 places, 50 transitions, 269 flow [2024-11-13 14:38:52,662 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=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=269, PETRI_PLACES=101, PETRI_TRANSITIONS=50} [2024-11-13 14:38:52,662 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 67 predicate places. [2024-11-13 14:38:52,663 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 50 transitions, 269 flow [2024-11-13 14:38:52,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 14.333333333333334) internal successors, (387), 27 states have internal predecessors, (387), 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 14:38:52,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:38:52,663 INFO L204 CegarLoopForPetriNet]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:38:52,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:38:52,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 14:38:52,868 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 14:38:52,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:38:52,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1705004605, now seen corresponding path program 5 times [2024-11-13 14:38:52,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:38:52,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128706411] [2024-11-13 14:38:52,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:38:52,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:38:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:38:55,453 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:38:55,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:38:55,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128706411] [2024-11-13 14:38:55,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128706411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:38:55,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435692733] [2024-11-13 14:38:55,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:38:55,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:38:55,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:38:55,456 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:38:55,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:38:55,578 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-13 14:38:55,578 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:38:55,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-13 14:38:55,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:38:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 253 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:38:57,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:39:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:39:00,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435692733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:39:00,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:39:00,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 90 [2024-11-13 14:39:00,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707174680] [2024-11-13 14:39:00,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:39:00,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-11-13 14:39:00,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:39:00,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-11-13 14:39:00,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=7014, Unknown=0, NotChecked=0, Total=8190 [2024-11-13 14:39:00,493 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-11-13 14:39:00,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 50 transitions, 269 flow. Second operand has 91 states, 91 states have (on average 8.186813186813186) internal successors, (745), 91 states have internal predecessors, (745), 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 14:39:00,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:39:00,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-11-13 14:39:00,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:40:07,790 INFO L124 PetriNetUnfolderBase]: 36637/59682 cut-off events. [2024-11-13 14:40:07,791 INFO L125 PetriNetUnfolderBase]: For 189057/189057 co-relation queries the response was YES. [2024-11-13 14:40:08,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159500 conditions, 59682 events. 36637/59682 cut-off events. For 189057/189057 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 408426 event pairs, 70 based on Foata normal form. 0/59147 useless extension candidates. Maximal degree in co-relation 159467. Up to 7719 conditions per place. [2024-11-13 14:40:08,259 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 955 selfloop transitions, 1475 changer transitions 1141/3575 dead transitions. [2024-11-13 14:40:08,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 3575 transitions, 22852 flow [2024-11-13 14:40:08,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 287 states. [2024-11-13 14:40:08,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2024-11-13 14:40:08,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 4419 transitions. [2024-11-13 14:40:08,280 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4528591924574708 [2024-11-13 14:40:08,280 INFO L175 Difference]: Start difference. First operand has 101 places, 50 transitions, 269 flow. Second operand 287 states and 4419 transitions. [2024-11-13 14:40:08,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 3575 transitions, 22852 flow [2024-11-13 14:40:08,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 3575 transitions, 19742 flow, removed 378 selfloop flow, removed 23 redundant places. [2024-11-13 14:40:08,995 INFO L231 Difference]: Finished difference. Result has 474 places, 1619 transitions, 9795 flow [2024-11-13 14:40:08,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=287, PETRI_FLOW=9795, PETRI_PLACES=474, PETRI_TRANSITIONS=1619} [2024-11-13 14:40:08,996 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 440 predicate places. [2024-11-13 14:40:08,996 INFO L471 AbstractCegarLoop]: Abstraction has has 474 places, 1619 transitions, 9795 flow [2024-11-13 14:40:08,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 8.186813186813186) internal successors, (745), 91 states have internal predecessors, (745), 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 14:40:08,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:40:08,997 INFO L204 CegarLoopForPetriNet]: trace histogram [24, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:40:09,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 14:40:09,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 14:40:09,201 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:40:09,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:40:09,202 INFO L85 PathProgramCache]: Analyzing trace with hash -754436673, now seen corresponding path program 1 times [2024-11-13 14:40:09,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:40:09,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40669880] [2024-11-13 14:40:09,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:40:09,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:40:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:40:11,768 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:40:11,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:40:11,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40669880] [2024-11-13 14:40:11,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40669880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:40:11,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469405164] [2024-11-13 14:40:11,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:40:11,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:40:11,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:40:11,771 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:40:11,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78d4773-d361-4792-b1b8-2f834deb372a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:40:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:40:11,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-13 14:40:11,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:40:13,903 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 253 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:40:13,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:40:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:40:16,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469405164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:40:16,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:40:16,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 97 [2024-11-13 14:40:16,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731573056] [2024-11-13 14:40:16,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:40:16,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-11-13 14:40:16,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:40:16,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-11-13 14:40:16,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1240, Invalid=8266, Unknown=0, NotChecked=0, Total=9506 [2024-11-13 14:40:16,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-11-13 14:40:16,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 1619 transitions, 9795 flow. Second operand has 98 states, 98 states have (on average 8.224489795918368) internal successors, (806), 98 states have internal predecessors, (806), 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 14:40:16,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:40:16,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-11-13 14:40:16,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand